53747
2018
2018
eng
1335
1341
7
1
474
article
Oxford Univ. Press
Oxford
1
2018-10-27
2018-10-27
--
On the expected gamma-ray emission from nearby flaring stars
Stellar flares have been extensively studied in soft X-rays (SXRs) by basically every X-ray mission. Hard X-ray (HXR) emission from stellar superflares, however, have only been detected from a handful of objects over the past years. One very extreme event was the superflare from the young M-dwarf DGCVn binary star system, which triggered Swift/BAT as if it was a gamma-ray burst. In this work, we estimate the expected gamma-ray emission from DGCVn and the most extreme stellar flares by extrapolating from solar flares based on measured solar energetic particles (SEPs), as well as thermal and non-thermal emission properties. We find that ions are plausibly accelerated in stellar superflares to 100 GeV energies, and possibly up to TeV energies in the associated coronal mass ejections. The corresponding pi(0)-decay gamma-ray emission could be detectable from stellar superflares with ground-based gamma-ray telescopes. On the other hand, the detection of gamma-ray emission implies particle densities high enough that ions suffer significant losses due to inelastic proton-proton scattering. The next-generation Cherenkov Telescope Array (CTA) should be able to probe superflares from M dwarfs in the solar neighbourhood and constrain the energy in interacting cosmic rays and/or their maximum energy. The detection of gamma-ray emission from stellar flares would open a new window for the study of stellar physics, the underlying physical processes in flares and their impact on habitability of planetary systems.
Monthly notices of the Royal Astronomical Society
10.1093/mnras/stx2806
0035-8711
1365-2966
wos:2018
WOS:000424339500093
Ohm, S (reprint author), DESY, D-15738 Zeuthen, Germany., stefan.ohm@desy.de
2022-02-03T16:07:08+00:00
sword
importub
filename=package.tar
bb64bc0993108ac623c2de0cc6a733af
false
true
Stefan Ohm
Clemens Hoischen
eng
uncontrolled
radiation mechanisms: non-thermal
eng
uncontrolled
stars: flare
eng
uncontrolled
stars: individual: DGCVn-gamma rays: stars
Physik
Institut für Physik und Astronomie
Referiert
Import
Green Open-Access
56809
2017
2017
eng
5
1
1792
other
American Institute of Physics
Melville
HESS Collaboration
1
2017-01-04
2017-01-04
--
The HESS II GRB Observation Scheme
Gamma-ray bursts (GRBs) are some of the Universe’s most enigmatic and exotic events. However, at energies above 10 GeV their behaviour remains largely unknown. Although space based telescopes such as the Fermi-LAT have been able to detect GRBs in this energy range, their photon statistics are limited by the small detector size. Such limitations are not present in ground based gamma-ray telescopes such as the H.E.S.S. experiment, which has now entered its second phase with the addition of a large 600 m2 telescope to the centre of the array. Such a large telescope allows H.E.S.S. to access the sub 100-GeV energy range while still maintaining a large effective collection area, helping to potentially probe the short timescale emission of these events.
We present a description of the H.E.S.S. GRB observation programme, summarising the performance of the rapid GRB repointing system and the conditions under which GRB observations are initiated. Additionally we will report on the GRB follow-ups made during the 2014-15 observation campaigns.
AIP conference proceedings / American Institute of Physics
10.1063/1.4968980
978-0-7354-1456-3
0094-243X
1551-7616
wos:2017
6th International Meeting on High Energy Gamma-Ray Astronomy
JUL 11-15, 2016
UNSP 050034
WOS:000399207800095
Heidelberg, GERMANY
Parsons, RD (reprint author), Max Planck Inst Kernphys, Heidelberg, Germany., daniel.parsons@inpi-hd.mpg.de
2022-11-24T11:36:19+00:00
sword
importub
filename=package.tar
410053e426a5a4b5a199969d5c723ae2
2093982-6
187069-5
Parsons, R. D.
false
true
R. D. Parsons
F. Schüssler
T. Garrigoux
A. Balzer
Matthias Füssling
Clemens Hoischen
M. Holler
A. Mitchell
G. Pühlhofer
G. Rowell
S. Wagner
E. Bissaldi
P. H. T. Tam
Physik
Institut für Physik und Astronomie
Referiert
Import
56808
2017
2017
eng
6
1
1792
other
American Institute of Physics
Melville
HESS Collaboration
1
2017-01-04
2017-01-04
--
HESS J1826-130
HESS J1826-130 is an unidentified hard spectrum source discovered by H.E.S.S. along the Galactic plane, the spectral index being Gamma = 1.6 with an exponential cut-off at about 12 TeV. While the source does not have a clear counterpart at longer wavelengths, the very hard spectrum emission at TeV energies implies that electrons or protons accelerated up to several hundreds of TeV are responsible for the emission. In the hadronic case, the VHE emission can be produced by runaway cosmic-rays colliding with the dense molecular clouds spatially coincident with the H.E.S.S. source.
AIP conference proceedings / American Institute of Physics
a very hard gamma-Ray spectrum source in the Galactic Plane
10.1063/1.4968928
978-0-7354-1456-3
0094-243X
1551-7616
wos:2017
6th International Meeting on High Energy Gamma-Ray Astronomy
JUL 11-15, 2016
UNSP 040024
WOS:000399207800043
Heidelberg, GERMANY
Anguner, EO (reprint author), Inst Fizyki Jadrowej PAN, Ul Radzikowskiego 152, PL-31342 Krakow, Poland., oguzhan.anguner@ifj.edu.pl
2022-11-24T10:42:08+00:00
sword
importub
filename=package.tar
21ee6ee1d73595c5f415d583634c622c
Angüner, Ekrem Oǧuzhan
2093982-6
187069-5
false
true
Ekrem Oǧuzhan Angüner
Felix A. Aharonian
Pol Bordas
Sabrina Casanova
Clemens Hoischen
I. Oya
A. Ziegler
Physik
Institut für Physik und Astronomie
Referiert
Import
44967
2016
2016
eng
6
117
article
American Physical Society
College Park
HESS Collaboration
1
--
--
--
Search for Dark Matter Annihilations towards the Inner Galactic Halo from 10 Years of Observations with HESS
The inner region of the Milky Way halo harbors a large amount of dark matter (DM). Given its proximity, it is one of the most promising targets to look for DM. We report on a search for the annihilations of DM particles using gamma-ray observations towards the inner 300 pc of the Milky Way, with the H.E.S.S. array of ground-based Cherenkov telescopes. The analysis is based on a 2D maximum likelihood method using Galactic Center (GC) data accumulated by H.E.S.S. over the last 10 years (2004-2014), and does not show any significant gamma-ray signal above background. Assuming Einasto and Navarro-Frenk-White DM density profiles at the GC, we derive upper limits on the annihilation cross section <sigma nu >. These constraints are the strongest obtained so far in the TeV DM mass range and improve upon previous limits by a factor 5. For the Einasto profile, the constraints reach <sigma nu > values of 6 x 10(-26) cm(3) s(-1) in the W+W- channel for a DM particle mass of 1.5 TeV, and 2 x 10(-26) cm(3) s(-1) in the tau(+)tau(-) channel for a 1 TeV mass. For the first time, ground-based gamma-ray observations have reached sufficient sensitivity to probe <sigma nu > values expected from the thermal relic density for TeV DM particles.
Physical review letters
10.1103/PhysRevLett.117.111301
27661677
0031-9007
1079-7114
wos2016:2019
111301
WOS:000383248000001
Lefranc, V; Moulin, E (reprint author), CEA Saclay, DSM Irfu, F-91191 Gif Sur Yvette, France., contact.hess@hess-experiment.eu; valentin.lefranc@cea.fr; emmanuel.moulin@cea.fr
German Ministry for Education and Research (BMBF); Max Planck Society; French Ministry for Research; CNRS-IN2P3; Astroparticle Interdisciplinary Programme of the CNRS; U.K. Science and Technology Facilities Council (STFC); IPNP of Charles University; Polish Ministry of Science and Higher Education; South African Department of Science and Technology; National Research Foundation; University of Namibia
importub
2020-03-22T14:36:01+00:00
filename=package.tar
cd74aca1cad908f0a03c35d6b56a0ea9
Hassan E. Abdalla
Attila Abramowski
Felix A. Aharonian
Faiçal Ait Benkhali
A. G. Akhperjanian
Ekrem Oǧuzhan Angüner
M. Arrieta
Pierre Aubert
Michael Backes
Arnim Balzer
Michelle Barnard
Yvonne Becherini
Julia Becker Tjus
David Berge
Sabrina Bernhard
K. Bernlöhr
E. Birsin
R. Blackwell
Markus Bottcher
Catherine Boisson
J. Bolmont
Pol Bordas
Johan Bregeon
Francois Brun
Pierre Brun
Mark Bryan
Tomasz Bulik
M. Capasso
John Carr
Sabrina Casanova
N. Chakraborty
R. Chalme-Calvet
Ryan C. G. Chaves
Andrew Chen
J. Chevalier
M. Chretien
Sergio Colafrancesco
Gabriele Cologna
B. Condon
Jan Conrad
C. Couturier
Y. Cui
I. D. Davids
B. Degrange
Christoph Deil
P. deWilt
Arache Djannati-Atai
Wilfried Domainko
Axel Donath
Guillaume Dubus
Kate Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
J. -P. Ernenwein
S. Eschbach
C. Farnier
Stuart Fegan
M. V. Fernandes
A. Fiasson
G. Fontaine
A. Foerster
S. Funk
Matthias Füßling
Stefano Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
Gianluca Giavitto
B. Giebels
J. F. Glicenstein
Daniel Gottschall
A. Goyal
M. -H. Grondin
M. Grudzinska
Daniela Hadasch
J. Hahn
J. Hawkes
G. Heinzelmann
Gilles Henri
G. Hermann
Olivier Hervet
A. Hillert
James Anthony Hinton
Werner Hofmann
Clemens Hoischen
M. Holler
D. Horns
Alex Ivascenko
A. Jacholkowska
Marek Jamrozy
M. Janiak
D. Jankowsky
Felix Jankowsky
M. Jingo
Tobias Jogler
Lea Jouvin
Ira Jung-Richardt
M. A. Kastendieck
Krzysztof Katarzynski
Uli Katz
D. Kerszberg
B. Khelifi
M. Kieffer
J. King
S. Klepser
Dmitry Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
Michael Kraus
F. Krayzel
P. P. Kruger
H. Laffon
G. Lamanna
Jeanie Lau
J. -P. Lees
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
Thomas Lohse
M. Lorentz
R. Lui
Iryna Lypova
Vincent Marandon
Alexandre Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
Michael Mayer
Petrus Johannes Meintjes
U. Menzler
Manuel Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
K. Mora
E. Moulin
T. Murach
Mathieu de Naurois
F. Niederwanger
J. Niemiec
L. Oakes
Hirokazu Odaka
Stefan Ohm
S. Oettl
M. Ostrowski
I. Oya
Marco Padovani
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
P. -O. Petrucci
B. Peyaud
S. Pita
Helen Poon
Dmitry Prokhorov
Heike Prokoph
Gerd Puehlhofer
Michael Punch
Andreas Quirrenbach
S. Raab
Anita Reimer
Olaf Reimer
M. Renaud
R. de los Reyes
Frank Rieger
Carlo Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
David Salek
David A. Sanchez
Andrea Santangelo
Manami Sasaki
Reinhard Schlickeiser
F. Schussler
Andreas Schulz
U. Schwanke
S. Schwemmer
A. S. Seyffert
N. Shafi
R. Simoni
H. Sol
Felix Spanier
G. Spengler
F. Spiess
Lukasz Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
Iurii Sushch
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
Martin Tluczykont
C. Trichard
R. Tuffs
Johan van der Walt
Christopher van Eldik
Brian van Soelen
Georges Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
Jacco Vink
F. Voisin
Heinrich J. Voelk
Thomas Vuillaume
Z. Wadiasingh
Stefan J. Wagner
P. Wagner
R. M. Wagner
R. White
Alicja Wierzcholska
P. Willmann
A. Woernlein
Denis Wouters
R. Yang
Victor Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Andreas Zech
F. Zefi
A. Ziegler
Natalia Zywucka
Institut für Physik und Astronomie
Referiert
Import
50736
2018
2018
eng
3011
3022
12
3
482
article
Oxford Univ. Press
Oxford
HESS Collaboration
1
2018-10-05
2018-10-05
--
VHE gamma-ray discovery and multiwavelength study of the blazar 1ES 2322-409
A hotspot at a position compatible with the BL. Lac object 1ES 2322-409 was serendipitously detected with H.E.S.S. during observations performed in 2004 and 2006 on the blazar PKS 2316-423. Additional data on 1ES 2322-409 were taken in 2011 and 2012, leading to a total live-time of 22.3 h. Point-like very-high-energy (VHE; E > 100 GeV) gamma-ray emission is detected from a source centred on the IFS 2322-409 position, with an excess of 116.7 events at a significance of 6.0 sigma. The average VHE gamma-ray spectrum is well described with a power law with a photon index Gamma = 3.40 +/- 0.66(stat) +/- 0.20(sys) and an integral flux Phi(E > 200 GeV) = (3.11 +/- 0.71(stat) 0.62(sys)) x 10(-2)cm(-2)s(-1), which corresponds to 1.1 per cent of the Crab nebula flux above 200 GeV. Multiwavelength data obtained with Fermi LAT, Swift XRT and UVOT, RXTE PCA, ATOM, and additional data from WISE, GROND, and Catalina are also used to characterize the broad-band non-thermal emission of lES 2322-409. The multiwavelength behaviour indicates day-scale variability. Swift UVOT and XRT data show strong variability at longer scales. A spectral energy distribution (SED) is built from contemporaneous observations obtained around a high state identified in Swift data. A modelling of the SED is performed with a stationary homogeneous one-zone synchrotronself-Compton leptonic model. The redshift of the source being unknown, two plausible values were tested for the modelling. A systematic scan of the model parameters space is performed, resulting in a well-constrained combination of values providing a good description of the broad-band behaviour of 1ES 2322-409.
Monthly notices of the Royal Astronomical Society
10.1093/mnras/sty2686
0035-8711
1365-2966
wos:2019
WOS:000462312600014
Arrieta, M (reprint author), Univ Paris Diderot, LUTH, Observ Paris, PSL Res Univ,CNRS, 5 Pl Jules Janssen, E-92190 Meudon, France.; Cerruti, M (reprint author), Univ Paris Diderot, Sorbonne Univ, Sorbonne Paris Cite, CNRS,IN2P3,Lab Phys Theor & Hautes Energies, 4 Pl Jussieu, F-75252 Paris, France.; Lefaucheur, J (reprint author), Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France., arrieta.hess@hess-experiment.eu; cerruti.hess@hess-experiment.eu; lefaucheur.hess@hess-experiment.eu
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); Alexander von Humboldt FoundationAlexander von Humboldt Foundation; Deutsche ForschungsgemeinschaftGerman Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; U.K. Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish National Science Centre; South African Department of Science and Technology; National Research Foundation; University of Namibia; National Commission on Research, Science AMP; Technology of Namibia (NCRST); Innsbruck University; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Austrian Federal Ministry for Science, Research and Economy; University of Adelaide; Australian Research CouncilAustralian Research Council; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; University of Amsterdam; National Aeronautics and Space AdministrationNational Aeronautics & Space Administration (NASA); National Science FoundationNational Science Foundation (NSF); National Aeronautics and Space AdministrationNational Aeronautics & Space Administration (NASA) [NNG05GF22G]; U.S. National Science FoundationNational Science Foundation (NSF) [AST-0909182, AST-1313422]; Paris Science et Lettres (PSL) foundation; EU FP7 Marie CurieEuropean Union (EU) [PIEF-GA-2012-332350]
2021-05-19T07:08:34+00:00
sword
importub
filename=package.tar
87dc14fce8399bf7f0ad7e95e3531c93
Arrieta, M; Cerruti, M.; Lefaucheur, J.
false
true
Hassan E. Abdalla
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Arcaro
C. Armand
M. Arrieta
M. Backes
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
T. Bylund
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
N. Chakraborty
S. Chandra
R. C. G. Chaves
A. Chen
S. Colafrancesco
B. Condon
I. D. Davids
C. Dei
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Dmytriiev
A. Donath
J. Dyks
Kathrin Egberts
G. Emery
J. -P. Ernenwein
S. Eschbach
S. Fegan
A. Fiasson
G. Fontaine
S. Funk
Matthias Füssling
S. Gabici
Y. A. Gallant
T. Garrigoux
F. Gate
G. Giavitto
D. Glawion
J. F. Glicenstein
D. Gottschall
M. -H. Grondin
J. Hahn
M. Haupt
G. Heinzelmann
G. Henri
G. Hermann
J. A. Hinton
W. Hofmann
Clemens Hoischen
T. L. Holch
M. Holler
D. Horns
D. Huber
H. Iwasaki
A. Jacholkowska
M. Jamrozy
D. Jankowsky
F. Jankowsky
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
J. King
S. Klepser
W. Kluzniak
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
R. R. Kruger
G. Lamanna
J. Lau
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Lopez-Coto
I. Lypova
D. Malyshev
V. Marandon
A. Marcowith
C. Mariaud
G. Marti-Devesa
R. Marx
G. Maurin
P. J. Meintjes
A. M. W. Mitche
R. Moderski
M. Mohamed
L. Mohrmann
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
C. Perennes
P. -O. Petrucci
B. Peyaud
Q. Piel
S. Pita
V. Poireau
A. Priyana Noel
D. A. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
E. Ruiz-Velasco
V. Sahakian
S. Saito
David M. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Senniappan
A. S. Seyffert
N. Shafi
I. Shilon
K. Shiningayamwe
R. Simoni
A. Sinha
H. Sol
F. Spanier
A. Specovius
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
Iurii Sushch
T. Takahashi
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
A. Woernlein
R. Yang
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
J. Zorn
N. Zywucka
eng
uncontrolled
radiation mechanisms: non-thermal
eng
uncontrolled
galaxies: active
eng
uncontrolled
BL Lacertae objects: individual: 1ES 2322-409
eng
uncontrolled
gamma-rays: galaxies
Astronomie und zugeordnete Wissenschaften
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
48806
2019
2019
eng
19
627
article
EDP Sciences
Les Ulis
HESS Collaboration
1
2019-07-16
2019-07-16
--
Constraints on the emission region of 3C 279 during strong flares in 2014 and 2015 through VHE gamma-ray observations with HESS
The flat spectrum radio quasar 3C 279 is known to exhibit pronounced variability in the high-energy (100MeV < E < 100 GeV) gamma-ray band, which is continuously monitored with Fermi-LAT. During two periods of high activity in April 2014 and June 2015 target-of-opportunity observations were undertaken with the High Energy Stereoscopic System (H.E.S.S.) in the very-high-energy (VHE, E > 100 GeV) gamma-ray domain. While the observation in 2014 provides an upper limit, the observation in 2015 results in a signal with 8 : 7 sigma significance above an energy threshold of 66 GeV. No VHE variability was detected during the 2015 observations. The VHE photon spectrum is soft and described by a power-law index of 4.2 +/- 0.3. The H.E.S.S. data along with a detailed and contemporaneous multiwavelength data set provide constraints on the physical parameters of the emission region. The minimum distance of the emission region from the central black hole was estimated using two plausible geometries of the broad-line region and three potential intrinsic spectra. The emission region is confidently placed at r greater than or similar to 1 : 7 X 1017 cm from the black hole, that is beyond the assumed distance of the broad-line region. Time-dependent leptonic and lepto-hadronic one-zone models were used to describe the evolution of the 2015 flare. Neither model can fully reproduce the observations, despite testing various parameter sets. Furthermore, the H.E.S.S. data were used to derive constraints on Lorentz invariance violation given the large redshift of 3C 279.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201935704
1432-0746
wos:2019
A159
WOS:000475554500004
Zacharias, M (reprint author), North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa.; Romoli, C (reprint author), Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.; Wierzcholska, A (reprint author), Inst Fizyki Jadrowej Pan, Ul Radzikowskiego 152, PL-31342 Krakow, Poland.; Jankowsky, F; Wierzcholska, A (reprint author), Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany.
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); Helmholtz AssociationHelmholtz Association; Alexander von Humboldt FoundationAlexander von Humboldt Foundation; French Ministry of Higher Education, Research and Innovation [CNRS/IN2P3]; (CNRS/INSU)Centre National de la Recherche Scientifique (CEA)French Atomic Energy Commission; U.K. Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); Knut and Alice Wallenberg FoundationKnut & Alice Wallenberg Foundation; National Science Centre, Poland [2016/22/M/ST9/00382]; National Research Foundation; University of Namibia; National Commission on Research, Science & Technology of Namibia (NCRST); Austrian Federal Ministry of Education, Science and Research; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Australian Research Council (ARC)Australian Research Council; University of Amsterdam; EGI Federation; Polish National Agency for Academic Exchange (NAWA); National Aeronautics and Space AdministrationNational Aeronautics & Space Administration (NASA)
2021-01-06T17:20:15+00:00
sword
importub
filename=package.tar
5aac9e03e143be24c67b452264b54ba2
false
true
Hassan E. Abdalla
R. Adam
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Arcaro
C. Armand
H. Ashkar
M. Backes
V. Barbosa Martins
M. Barnard
Y. Becherini
D. Berge
K. Bernloehr
R. Blackwell
M. Böttcher
C. Boisson
J. Bolmont
S. Bonnefoy
J. Bregeon
M. Breuhaus
F. Brun
P. Brun
M. Bryan
M. Büchele
T. Bulik
T. Bylund
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
T. Chand
S. Chandra
A. Chen
S. Colafrancesco
M. Curylo
I. D. Davids
C. Deil
J. Devin
P. DeWilt
L. Dirson
A. Djannati-Ata
A. Dmytriiev
A. Donath
V Doroshenko
J. Dyks
Kathrin Egberts
G. Emery
J-P Ernenwein
S. Eschbach
K. Feijen
S. Fegan
A. Fiasson
G. Fontaine
S. Funk
Matthias Füßling
S. Gabici
Y. A. Gallant
F. Gate
G. Giavitto
D. Glawion
J. F. Glicenstein
D. Gottschall
M-H Grondin
J. Hahn
M. Haupt
G. Heinzelmann
G. Henri
G. Hermann
James Anthony Hinton
W. Hofmann
Clemens Hoischen
Tim Lukas Holch
M. Holler
D. Horns
D. Huber
H. Iwasaki
M. Jamrozy
D. Jankowsky
F. Jankowsky
A. Jardin-Blicq
I Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Khangulyan
B. Khelifi
J. King
S. Klepser
W. Kluzniak
Nu Komin
K. Kosack
D. Kostunin
M. Kraus
G. Lamanna
J. Lau
A. Lemiere
M. Lemoine-Goumard
J-P Lenain
Eva Leser
C. Levy
T. Lohse
I Lypova
J. Mackey
J. Majumdar
D. Malyshev
V Marandon
A. Marcowith
A. Mares
C. Mariaud
G. Marti-Devesa
R. Marx
G. Maurin
P. J. Meintjes
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
C. Moore
E. Moulin
J. Muller
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
E. de Ona Wilhelmi
M. Ostrowski
I Oya
M. Panter
R. D. Parsons
C. Perennes
P-O Petrucci
B. Peyaud
Q. Piel
S. Pita
V Poireau
A. Priyana Noel
D. A. Prokhorov
H. Prokoph
G. Pühlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
Q. Remy
M. Renaud
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
E. Ruiz-Velasco
V Sahakian
S. Saito
David M. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schüssler
A. Schulz
H. Schutte
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Senniappan
A. S. Seyffert
N. Shafi
K. Shiningayamwe
R. Simoni
A. Sinha
H. Sol
A. Specovius
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
T. Takahashi
T. Tavernier
A. M. Taylor
R. Terrier
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van Der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
R. White
A. Wierzcholska
R. Yang
H. Yoneda
Michael Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
A. Ziegler
J. Zorn
N. Zywucka
M. Meyer
eng
uncontrolled
radiation mechanisms: non-thermal
eng
uncontrolled
quasars: individual: 3C 279
eng
uncontrolled
galaxies: active
eng
uncontrolled
relativistic processes
Physik
Institut für Physik und Astronomie
Referiert
Import
Green Open-Access
53086
2018
2018
eng
8
612
article
EDP Sciences
Les Ulis
HESS Collaboration
1
2018-04-09
2018-04-09
--
Extended VHE gamma-ray emission towards SGR1806-20, LBV 1806-20, and stellar cluster Cl*1806-20
Using the High Energy Spectroscopic System (H.E.S.S.) telescopes we have discovered a steady and extended very high-energy (VHE) gamma-ray source towards the luminous blue variable candidate LBV 1806-20, massive stellar cluster Cl* 1806-20, and magnetar SGR 1806-20. The new VHE source, HESS J1808-204, was detected at a statistical significance of >6 sigma (post-trial) with a photon flux normalisation (2.9 +/- 0.4(stat) +/- 0.5(sys)) x 10(-13) ph cm(-2) s(-1) TeV-1 at 1 TeV and a power-law photon index of 2.3 +/- 0.2(stat) +/- 0.3(sys). The luminosity of this source (0.2 to 10 TeV; scaled to distance d = 8 : 7 kpc) is L-VHE similar to 1.6 x 10(34)(d = 8.7 kpc)(2) erg s(-1). The VHE gamma-ray emission is extended and is well fit by a single Gaussian with statistical standard deviation of 0.095 degrees +/- 0.015 degrees. This extension is similar to that of the synchrotron radio nebula G10.0-0.3, which is thought to be powered by LBV 1806-20. The VHE gamma-ray luminosity could be provided by the stellar wind luminosity of LBV 1806-20 by itself and/or the massive star members of Cl* 1806-20. Alternatively, magnetic dissipation (e.g. via reconnection) from SGR 1806-20 can potentially account for the VHE luminosity. The origin and hadronic and/or leptonic nature of the accelerated particles responsible for HESS J1808-204 is not yet clear. If associated with SGR 1806 20, the potentially young age of the magnetar (650 yr) can be used to infer the transport limits of these particles to match the VHE source size. This discovery provides new interest in the potential for high-energy particle acceleration from magnetars, massive stars, and/or stellar clusters.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201628695
1432-0746
wos:2018
A11
WOS:000429404700011
Abdalla, H (reprint author), North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa.
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; UK Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish Ministry of Science and Higher EducationMinistry of Science and Higher Education, Poland; South African Department of Science and Technology; National Research Foundation; Australian Research CouncilAustralian Research Council; University of Namibia
2021-12-10T09:23:43+00:00
sword
importub
filename=package.tar
77b7b533abb80a93e50034bb2415b491
false
true
Hassan E. Abdalla
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
A. G. Akhperjanian
E. O. Anguener
M. Arrieta
P. Aubert
M. Backes
A. Balzer
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
E. Birsin
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
T. Bulik
M. Capasso
J. Carr
Sabrina Casanova
N. Chakraborty
R. Chalme-Calvet
R. C. G. Chaves
A. Chen
J. Chevalier
M. Chretien
S. Colafrancesco
G. Cologna
B. Condon
J. Conrad
C. Couturier
Y. Cui
I. D. Davids
B. Degrange
C. Deil
P. deWilt
A. Djannati-Atai
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
J. -P. Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. V. Fernandes
A. Fiasson
G. Fontaine
A. Foerster
S. Funk
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
A. Goyal
M. -H. Grondin
M. Grudzinska
D. Hadasch
J. Hahn
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
J. A. Hinton
W. Hofmann
Clemens Hoischen
M. Holler
D. Horns
A. Ivascenko
A. Jacholkowska
M. Jamrozy
M. Janiak
D. Jankowsky
F. Jankowsky
M. Jingo
T. Jogler
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
U. Katz
D. Kerszberg
B. Khelifi
M. Kieffer
J. King
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
F. Krayzel
P. P. Kruger
H. Laffon
G. Lamanna
J. Lau
J. -P. Lees
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
E. Leser
T. Lohse
M. Lorentz
R. Liu
I. Lypova
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
U. Menzler
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
K. Mora
E. Moulin
T. Murach
M. de Naurois
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Oettl
S. Ohm
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
P. -O. Petrucci
B. Peyaud
S. Pita
H. Poon
D. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
U. Schwanke
S. Schwemmer
A. S. Seyffert
N. Shafi
I. Shilon
R. Simoni
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
I. Sushch
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
M. Tluczykont
C. Trichard
R. Tuffs
J. van der Walt
C. van Eldik
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
N. Zywucka
eng
uncontrolled
gamma rays: general
eng
uncontrolled
stars: magnetars
eng
uncontrolled
stars: massive
Physik
Institut für Physik und Astronomie
Import
49065
2019
2019
eng
11
626
article
EDP Sciences
Les Ulis
HESS Collaboration
1
2019-07-12
2019-07-12
--
Upper limits on very-high-energy gamma-ray emission from core-collapse supernovae observed with H.E.S.S.
Young core-collapse supernovae with dense-wind progenitors may be able to accelerate cosmic-ray hadrons beyond the knee of the cosmic-ray spectrum, and this may result in measurable gamma-ray emission. We searched for gamma-ray emission from ten super- novae observed with the High Energy Stereoscopic System (H.E.S.S.) within a year of the supernova event. Nine supernovae were observed serendipitously in the H.E.S.S. data collected between December 2003 and December 2014, with exposure times ranging from 1.4 to 53 h. In addition we observed SN 2016adj as a target of opportunity in February 2016 for 13 h. No significant gamma-ray emission has been detected for any of the objects, and upper limits on the >1 TeV gamma-ray flux of the order of similar to 10(-13) cm(-)(2)s(-1) are established, corresponding to upper limits on the luminosities in the range similar to 2 x 10(39) to similar to 1 x 10(42) erg s(-1). These values are used to place model-dependent constraints on the mass-loss rates of the progenitor stars, implying upper limits between similar to 2 x 10(-5) and similar to 2 x 10(-3) M-circle dot yr(-1) under reasonable assumptions on the particle acceleration parameters.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201935242
1432-0746
wos:2019
A57
WOS:000471213000003
Simoni, R; Vink, J (reprint author), Univ Amsterdam, Anton Pannekoek Inst Astron, GRAPPA, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands.; Renaud, M (reprint author), Univ Montpellier, Lab Univers & Particules Montpellier, CNRS, IN2P3,CC 72, Pl Eugene Bataillon, F-34095 Montpellier 5, France.; Maxted, NI (reprint author), Univ New South Wales, Australian Def Force Acad, Sch Sci, Canberra, ACT 2600, Australia.
University of Namibia; German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); Helmholtz AssociationHelmholtz Association; Alexander von Humboldt FoundationAlexander von Humboldt Foundation; French Ministry of Higher Education, Research and Innovation; Centre National de la Recherche Scientifique (CNRS/IN2P3); Centre National de la Recherche Scientifique (CNRS/INSU)Centre National et aux energies alternatives (CEA)French Atomic Energy Commission; U.K. Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); Knut and Alice Wallenberg FoundationKnut & Alice Wallenberg Foundation; National Science Centre, Poland [2016/22/M/ST9/00382]; South African Department of Science and Technology; National Research Foundation; National Commission on Research, Science & Technology of Namibia (NCRST); Austrian Federal Ministry of Education, Science and Research; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Australian Research Council (ARC)Australian Research Council; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; University of Amsterdam
2021-01-25T11:16:48+00:00
sword
importub
filename=package.tar
dcb1217ebec90fa297d62a67b2f6255c
Simoni, R; Vink, J.
false
true
Hassan E. Abdalla
Felix A. Aharonian
F. Ait Benkhali
E. O. Anguener
M. Arakawa
C. Arcaro
C. Armand
H. Ashkar
M. Backes
V. Barbosa Martins
M. Barnard
Y. Becherini
D. Berge
K. Bernloehr
R. Blackwell
M. Boettcher
C. Boisson
J. Bolmont
S. Bonnefoy
J. Bregeon
M. Breuhaus
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
T. Bylund
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
N. Chakraborty
T. Chand
S. Chandra
R. C. G. Chaves
A. Chen
S. Colafrancesco
M. Curylo
I. D. Davids
C. Deil
J. Devin
P. de Wilt
L. Dirson
A. Djannati-Atai
A. Dmytriiev
A. Donath
V Doroshenko
J. Dyks
Kathrin Egberts
G. Emery
J-p Ernenwein
S. Eschbach
K. Feijen
S. Fegan
A. Fiasson
G. Fontaine
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
F. Gate
G. Giavitto
D. Glawion
J. F. Glicenstein
D. Gottschall
M-H Grondin
J. Hahn
M. Haupt
G. Heinzelmann
G. Henri
G. Hermann
James Anthony Hinton
W. Hofmann
Clemens Hoischen
Tim Lukas Holch
M. Holler
D. Horns
D. Huber
H. Iwasaki
M. Jamrozy
D. Jankowsky
F. Jankowsky
I Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Khangulyan
B. Khelifi
J. King
S. Klepser
W. Kluzniak
Nu Komin
K. Kosack
D. Kostunin
M. Kraus
G. Lamanna
J. Lau
A. Lemiere
M. Lemoine-Goumard
J-P Lenain
Eva Leser
C. Levy
T. Lohse
R. Lopez-Coto
I Lypova
J. Mackey
J. Majumdar
D. Malyshev
V Marandon
A. Marcowith
A. Mares
C. Mariaud
G. Marti-Devesa
R. Marx
G. Maurin
P. J. Meintjes
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
J. Muller
C. Moore
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
E. de Ona Wilhelmi
M. Ostrowski
I Oya
M. Panter
R. D. Parsons
C. Perennes
P-O Petrucci
B. Peyaud
Q. Piel
S. Pita
V Poireau
A. Priyana Noel
D. A. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
Q. Remy
M. Renaud
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
E. Ruiz-Velasco
V Sahakian
S. Saito
David M. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
H. Schutte
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Senniappan
A. S. Seyffert
N. Shafi
K. Shiningayamwe
R. Simoni
A. Sinha
H. Sol
A. Specovius
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
T. Takahashi
T. Tavernier
A. M. Taylor
R. Terrier
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
R. White
A. Wierzcholska
R. Yang
H. Yoneda
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
A. Ziegler
J. Zorn
N. Zywucka
N. Maxted
eng
uncontrolled
gamma rays: general
eng
uncontrolled
supernovae: general
eng
uncontrolled
cosmic rays
Astronomie und zugeordnete Wissenschaften
Physik
Institut für Physik und Astronomie
Referiert
Import
Green Open-Access
52900
2018
2018
eng
7
20
120
article
American Physical Society
College Park
HESS Collaboration
1
2018-05-15
2018-05-15
--
Search for gamma-Ray Line Signals from Dark Matter Annihilations in the Inner Galactic Halo from 10 Years of Observations with HESS
Spectral lines are among the most powerful signatures for dark matter (DM) annihilation searches in very-high-energy gamma rays. The central region of the Milky Way halo is one of the most promising targets given its large amount of DM and proximity to Earth. We report on a search for a monoenergetic spectral line from self-annihilations of DM particles in the energy range from 300 GeV to 70 TeV using a two-dimensional maximum likelihood method taking advantage of both the spectral and spatial features of the signal versus background. The analysis makes use of Galactic center observations accumulated over ten years (2004-2014) with the H.E.S.S. array of ground-based Cherenkov telescopes. No significant gamma-ray excess above the background is found. We derive upper limits on the annihilation cross section (sigma v) for monoenergetic DM lines at the level of 4 x 10(-28) cm(3) s(-1) at 1 TeV, assuming an Einasto DM profile for the Milky Way halo. For a DM mass of 1 TeV, they improve over the previous ones by a factor of 6. The present constraints are the strongest obtained so far for DM particles in the mass range 300 GeV-70 TeV. Ground-based gamma-ray observations have reached sufficient sensitivity to explore relevant velocity-averaged cross sections for DM annihilation into two gamma-ray photons at the level expected from the thermal relic density for TeV DM particles.
Physical review letters
10.1103/PhysRevLett.120.201101
29864326
0031-9007
1079-7114
wos:2018
201101
WOS:000433030700003
Abdallah, H (reprint author), North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa.
University of Namibia; German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck Society; German Research Foundation (DFG)German Research Foundation (DFG); Alexander von Humboldt FoundationAlexander von Humboldt Foundation; Deutsche ForschungsgemeinschaftGerman Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; United Kingdom Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC)Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish National Science Centre; South African Department of Science and Technology and National Research Foundation; National Commission on Research; Science and Technology of Namibia (NCRST); Innsbruck University; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Austrian Federal Ministry for Science; Research and Economy; University of Adelaide; Australian Research CouncilAustralian Research Council; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; University of Amsterdam; H.E.S.S. Virtual Organisation; national resource providers of the EGI Federation; EU FP7 Marie CurieEuropean Union (EU) [PIEF-GA-2012-332350]
2021-12-01T08:35:12+00:00
sword
importub
filename=package.tar
1de00d277eccba3a9b4d2f3a65e434ad
false
true
Hassan E. Abdalla
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
M. Arrieta
P. Aubert
M. Backes
A. Balzer
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
M. Capasso
S. Caroff
A. Carosi
J. Carr
Sabrina Casanova
M. Cerruti
N. Chakraborty
R. C. G. Chaves
A. Chen
J. Chevalier
S. Colafrancesco
B. Condon
J. Conrad
I. D. Davids
J. Decock
C. Deil
J. Devin
P. Dewilt
L. Dirson
A. Djannati-Atai
W. Domainko
A. Donath
K. Dutson
J. Dyks
T. Edwards
Kathrin Egberts
P. Eger
G. Emery
J-P Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. Fernandes
A. Fiasson
G. Fontaine
A. Foerster
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
T. Garrigoux
F. Gate
G. Giavitto
B. Giebels
D. Glawion
J. F. Glicenstein
D. Gottschall
M-H Grondin
J. Hahn
M. Haupt
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
J. A. Hinton
W. Hofmann
Clemens Hoischen
T. L. Holch
M. Holler
D. Horns
A. Ivascenko
H. Iwasaki
A. Jacholkowska
M. Jamrozy
M. Janiak
D. Jankowsky
F. Jankowsky
M. Jingo
L. Jouvin
I Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
J. King
S. Klepser
D. Klochkov
W. Kluzniak
Nu Komin
K. Kosack
S. Krakau
M. Kraus
P. P. Krueger
H. Laffon
G. Lamanna
J. Lau
J-P Lees
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J-P Lenain
Eva Leser
R. Liu
T. Lohse
M. Lorentz
R. Lopez-Coto
I Lypova
D. Malyshev
V Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
K. Mora
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I Oya
M. Padovani
M. Panter
R. D. Parsons
N. W. Pekeur
G. Pelletier
C. Perennes
P-O Petrucci
B. Peyaud
Q. Piel
S. Pita
V Poireau
H. Poon
D. Prokhorov
H. Prokoph
G. Puelhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
R. De Los Reyes
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
C. B. Rulten
V Sahakian
S. Saito
D. A. Sanchez
A. Santangelo
M. Sasaki
M. Schandri
R. Schlickeiser
F. Schussler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Settimo
A. S. Seyffert
N. Shafi
I Shilon
K. Shiningayamwe
R. Simoni
H. Sol
F. Spanier
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
I Sushch
T. Takahashi
J-P Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
J. Zorn
N. Zywucka
Physik
Institut für Physik und Astronomie
Referiert
Import
Green Open-Access
53095
2018
2018
eng
6
612
article
EDP Sciences
Les Ulis
HESS Collaboration
1
2018-04-22
2018-04-22
--
Systematic search for very-high-energy gamma-ray emission from bow shocks of runaway stars
Context. Runaway stars form bow shocks by ploughing through the interstellar medium at supersonic speeds and are promising sources of non-thermal emission of photons. One of these objects has been found to emit non-thermal radiation in the radio band. This triggered the development of theoretical models predicting non-thermal photons from radio up to very-high-energy (VHE, E >= 0.1 TeV) gamma rays. Subsequently, one bow shock was also detected in X-ray observations. However, the data did not allow discrimination between a hot thermal and a non-thermal origin. Further observations of different candidates at X-ray energies showed no evidence for emission at the position of the bow shocks either. A systematic search in the Fermi-LAT energy regime resulted in flux upper limits for 27 candidates listed in the E-BOSS catalogue. Aims. Here we perform the first systematic search for VHE gamma-ray emission from bow shocks of runaway stars. Methods. Using all available archival H.E.S.S. data we search for very-high-energy gamma-ray emission at the positions of bow shock candidates listed in the second E-BOSS catalogue release. Out of the 73 bow shock candidates in this catalogue, 32 have been observed with H.E.S.S. Results. None of the observed 32 bow shock candidates in this population study show significant emission in the H.E.S.S. energy range. Therefore, flux upper limits are calculated in five energy bins and the fraction of the kinetic wind power that is converted into VHE gamma rays is constrained. Conclusions. Emission from stellar bow shocks is not detected in the energy range between 0.14 and 18 TeV. The resulting upper limits constrain the level of VHE gamma-ray emission from these objects down to 0.1-1% of the kinetic wind energy.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201630151
1432-0746
wos:2018
A12
WOS:000429404700012
Abdalla, H (reprint author), North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa.
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; UK Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish Ministry of Science and Higher EducationMinistry of Science and Higher Education, Poland; South African Department of Science and Technology; National Research Foundation; University of Namibia; Innsbruck University; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Austrian Federal Ministry for Science, Research and Economy; University of Adelaide; Australian Research CouncilAustralian Research Council; EGI Federation; National Aeronautics and Space AdministrationNational Aeronautics & Space Administration (NASA)
2021-12-13T11:06:53+00:00
sword
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7859a96d06003ce8dd490051fb7393a6
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true
Hassan E. Abdalla
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
A. G. Akhperjanian
T. Andersson
E. O. Anguener
M. Arakawa
M. Arrieta
P. Aubert
M. Backes
A. Balzer
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
M. Capasso
J. Carr
Sabrina Casanova
M. Cerruti
N. Chakraborty
R. Chalme-Calvet
R. C. G. Chaves
A. Chen
J. Chevalier
M. Chretien
M. Coffaro
S. Colafrancesco
G. Cologna
B. Condon
J. Conrad
Y. Cui
I. D. Davids
J. Decock
B. Degrange
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
W. Domainko
A. Donath
K. Dutson
J. Dyks
T. Edwards
Kathrin Egberts
P. Eger
J. -P. Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. V. Fernandes
A. Fiasson
G. Fontaine
A. Foerster
S. Funk
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
A. Goyal
M. -H. Grondin
J. Hahn
M. Haupt
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
J. A. Hinton
W. Hofmann
Clemens Hoischen
M. Holler
D. Horns
A. Ivascenko
H. Iwasaki
A. Jacholkowska
M. Jamrozy
M. Janiak
D. Jankowsky
F. Jankowsky
M. Jingo
T. Jogler
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
M. Kieffer
J. King
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
P. P. Kruger
H. Laffon
G. Lamanna
J. Lau
J. -P. Lees
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Liu
R. Lopez-Coto
I. Lypova
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
K. Mora
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Oettl
S. Ohm
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
N. W. Pekeur
G. Pelletier
C. Perennes
P. -O. Petrucci
B. Peyaud
Q. Piel
S. Pita
H. Poon
D. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
S. Richter
F. Rieger
C. Romoli
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
S. Saito
D. Salek
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Settimo
A. S. Seyffert
N. Shafi
I. Shilon
R. Simoni
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Michael Stegmann
K. Stycz
I. Sushch
T. Takahashi
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
N. Zywucka
eng
uncontrolled
radiation mechanisms: non-thermal
eng
uncontrolled
gamma rays: ISM
eng
uncontrolled
stars: early-type
eng
uncontrolled
gamma rays: stars
Physik
Institut für Physik und Astronomie
Import
52989
2018
2018
eng
4187
4198
12
3
476
article
Oxford Univ. Press
Oxford
H E S S Collaboration
1
2018-02-20
2018-02-20
--
HESS discovery of very high energy gamma-ray emission from PKS 0625-354
PKS 0625-354 (z = 0.055) was observed with the four High Energy Stereoscopic System (H.E.S.S.) telescopes in 2012 during 5.5 h. The source was detected above an energy threshold of 200 GeV at a significance level of 6.1 sigma. No significant variability is found in these observations. The source is well described with a power-law spectrum with photon index Gamma = 2.84 +/- 0.50(stat) +/- 0.10(syst) and normalization (at E-0 = 1.0 TeV) N-0(E-0)=(0.58 +/- 0.22(stat) +/- 0.12(syst)) x 10(-12) TeV-1 cm(-2) s(-1). Multiwavelength data collected with Fermi-LAT, Swift-XRT, Swift-UVOT, ATOM and WISE are also analysed. Significant variability is observed only in the Fermi-LAT gamma-ray and Swift-XRT X-ray energy bands. Having a good multiwavelength coverage from radio to very high energy, we performed a broad-band modelling from two types of emission scenarios. The results from a one zone lepto-hadronic and a multizone leptonic models are compared and discussed. On the grounds of energetics, our analysis favours a leptonic multizone model. Models associated to the X-ray variability constraint support previous results, suggesting a BL Lac nature of PKS 0625-354 with, however, a large-scale jet structure typical of a radio galaxy.
Monthly notices of the Royal Astronomical Society
10.1093/mnras/sty439
0035-8711
1365-2966
wos:2018
WOS:000430944100087
Abdalla, H (reprint author), North Wes Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa., contact.hess@hess-experiment.eu
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); Alexander von Humboldt FoundationAlexander von Humboldt Foundation; Deutsche ForschungsgemeinschaftGerman Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; U.K. Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish National Science Centre; South African Department of Science and Technology; National Research Foundation; University of Namibia; National Commission on Research, Science and Technology of Namibia (NCRST); Innsbruck University; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Austrian Federal Ministry for Science, Research and Economy; University of Adelaide; Australian Research CouncilAustralian Research Council; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; University of Amsterdam; Foundation for Polish Science (FNP)Foundation for Polish Science; U.S. National Science FoundationNational Science Foundation (NSF) [PHY-1307311]; Observatoire de Paris; EUEuropean Union (EU) [PIEF-GA-2012-332350]; EGI Federation
2021-12-07T08:40:00+00:00
sword
importub
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d38637f12732bafdbd7cc6d0ed407f33
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Hassan E. Abdalla
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
A. G. Akhperjanian
T. Andersson
Ekrem Oǧuzhan Angüner
M. Arrieta
P. Aubert
M. Backes
A. Balzer
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernlohr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
T. Bulik
M. Capasso
J. Carr
Sabrina Casanova
M. Cerruti
N. Chakraborty
R. Chalme-Calvet
R. C. G. Chaves
A. Chen
J. Chevalier
M. Chretien
S. Colafrancesco
G. Cologna
B. Condon
J. Conrad
Y. Cui
I. D. Davids
J. Decock
B. Degrange
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
J. -P. Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. V. Fernandes
A. Fiasson
G. Fontaine
A. Forster
S. Funk
Matthias Fussling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschal
A. Goya
M. -H. Grondin
D. Hadasch
J. Hahn
M. Haupt
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
J. A. Hinton
W. Hofmann
Clemens Hoischen
M. Holler
D. Horns
A. Ivascenko
A. Jacholkowska
M. Jamrozy
M. Janiak
D. Jankowsky
F. Jankowsky
M. Jingo
T. Jogler
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
U. Katz
D. Kerszberg
B. Khelifi
M. Kieffer
J. King
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
F. Krayzel
P. P. Kruger
H. Laffon
G. Lamanna
J. Lau
J. -P. Lees
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. - P. Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Liu
R. Lopez-Coto
I. Lypova
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
K. Mora
E. Moulin
T. Murach
M. de Naurois
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ottl
S. Ohm
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
N. W. Pekeur
G. Pelletier
C. Perennes
P. -O. Petrucci
B. Peyaud
Q. Piel
S. Pita
H. Poon
D. Prokhorov
H. Prokoph
G. Puhlhofer
M. Punch
A. Quirrenbach
S. Raab
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
C. Romoli
S. Rosier-Lees
G. Rowel
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
U. Schwanke
S. Schwemmer
M. Settimo
A. S. Seyffert
N. Shafi
I. Shilon
R. Simoni
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
I. Sushch
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Volk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Wornlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
N. Zywucka
eng
uncontrolled
radiation mechanisms: non-thermal
eng
uncontrolled
galaxies: active
eng
uncontrolled
galaxies: individual: PKS 0625-354
eng
uncontrolled
galaxies: jets
eng
uncontrolled
gamma-rays: galaxies
Astronomie und zugeordnete Wissenschaften
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
53097
2018
2018
eng
8
612
article
EDP Sciences
Les Ulis
NANTEN Collaboration HESS Collaboration
1
2018-04-09
2018-04-09
--
HESS J1741-302: a hidden accelerator in the Galactic plane
The H.E.S.S. Collaboration has discovered a new very high energy (VHE, E > 0.1 TeV) gamma-ray source, HESS J1741-302, located in the Galactic plane. Despite several attempts to constrain its nature, no plausible counterpart has been found so far at X-ray and MeV/GeV gamma-ray energies, and the source remains unidentified. An analysis of 145-h of observations of HESS J1741-302 at VHEs has revealed a steady and relatively weak TeV source (similar to 1% of the Crab Nebula flux), with a spectral index of Gamma = 2.3 +/- 0.2(stat) +/- 0.2(sys), extending to energies up to 10 TeV without any clear signature of a cut-off. In a hadronic scenario, such a spectrum implies an object with particle acceleration up to energies of several hundred TeV. Contrary to most H.E.S.S. unidentified sources, the angular size of HESS J1741-302 is compatible with the H.E.S.S. point spread function at VHEs, with an extension constrained to be below 0.068 degrees at a 99% confidence level. The gamma-ray emission detected by H.E.S.S. can be explained both within a hadronic scenario, due to collisions of protons with energies of hundreds of TeV with dense molecular clouds, and in a leptonic scenario, as a relic pulsar wind nebula, possibly powered by the middle-aged (20 kyr) pulsar PSR B1737-30. A binary scenario, related to the compact radio source 1LC 358.266+0.038 found to be spatially coincident with the best fit position of HESS J1741-302, is also envisaged.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201730581
1432-0746
wos:2018
A13
WOS:000429404700013
Abdalla, H (reprint author), North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa.
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); Alexander von Humboldt FoundationAlexander von Humboldt Foundation; Deutsche ForschungsgemeinschaftGerman Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; Astroparticle Interdisciplinary Programme of the CNRS; UK Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish National Science Centre; South African Department of Science and Technology; National Research Foundation; University of Namibia; National Commission on Research, Science AMP; Technology of Namibia (NCRST); Innsbruck University; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Austrian Federal Ministry for Science, Research and Economy; University of Adelaide; Australian Research CouncilAustralian Research Council; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; University of Amsterdam; EGI Federation; Polish National Science Center under the Opus Grant [UMO-2014/13/B/ST9/00945]; [CNRS-IN2P3]
2021-12-13T11:31:25+00:00
sword
importub
filename=package.tar
0dfb93450b204b047ce3e949d1b1caca
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true
Hassan E. Abdalla
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Armand
M. Arrieta
M. Backes
A. Balzer
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
R. Blackwell
M. Boettcher
C. Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
N. Chakraborty
R. C. G. Chaves
A. Chen
J. Chevalier
S. Colafrancesco
B. Condon
J. Conrad
I. D. Davids
J. Decock
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Donath
J. Dyks
T. Edwards
Kathrin Egberts
G. Emery
J. -P. Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. V. Fernandes
A. Fiasson
G. Fontaine
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
T. Garrigoux
F. Gate
G. Giavitto
D. Glawion
J. F. Glicenstein
D. Gottschall
M. -H. Grondin
J. Hahn
M. Haupt
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
J. A. Hinton
W. Hofmann
Clemens Hoischen
T. L. Holch
M. Holler
D. Horns
A. Ivascenko
H. Iwasaki
A. Jacholkowska
M. Jamrozy
D. Jankowsky
F. Jankowsky
M. Jingo
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
J. King
S. Klepser
D. Klochkov
W. Kluzniak
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
P. P. Kruger
H. Laffon
G. Lamanna
J. Lau
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Liu
R. Lopez-Coto
I. Lypova
D. Malyshev
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
K. Mora
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
N. W. Pekeur
G. Pelletier
C. Perennes
P. -O. Petrucci
B. Peyaud
Q. Piel
S. Pita
V. Poireau
D. A. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
S. Saito
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
A. S. Seyffert
N. Shafi
I. Shilon
K. Shiningayamwe
R. Simoni
H. Sol
F. Spanier
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
I. Sushch
T. Takahashi
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
J. Zorn
N. Zywucka
R. Enokiya
Y. Fukui
T. Hayakawa
T. Okuda
K. Torii
H. Yamamoto
eng
uncontrolled
gamma rays: ISM
eng
uncontrolled
gamma rays: general
eng
uncontrolled
cosmic rays
eng
uncontrolled
ISM: clouds
Physik
Institut für Physik und Astronomie
Import
53087
2018
2018
eng
22
612
article
EDP Sciences
Les Ulis
H E S S Collaboration
1
2018-04-09
2018-04-09
--
A search for very high-energy flares from the microquasars GRS 1915+105, Circinus X-1, and V4641 Sgr using contemporaneous HESS and RXTE observations
Context. Microquasars are potential gamma-ray emitters. Indications of transient episodes of gamma-ray emission were recently reported in at least two systems: Cyg X-1 and Cyg X-3. The identification of additional gamma-ray-emitting microquasars is required to better understand how gamma-ray emission can be produced in these systems. Aims. Theoretical models have predicted very high-energy (VHE) gamma-ray emission from microquasars during periods of transient outburst. Observations reported herein were undertaken with the objective of observing a broadband flaring event in the gamma-ray and X-ray bands. Methods. Contemporaneous observations of three microquasars, GRS 1915+105, Circinus X-1, and V4641 Sgr, were obtained using the High Energy Spectroscopic System (H.E.S.S.) telescope array and the Rossi X-ray Timing Explorer (RXTE) satellite. X-ray analyses for each microquasar were performed and VHE gamma-ray upper limits from contemporaneous H.E.S.S. observations were derived. Results. No significant gamma-ray signal has been detected in any of the three systems. The integral gamma-ray photon flux at the observational epochs is constrained to be I(>560 GeV) < 7.3 x 10(-13) cm(-2) S-1, I(>560 GeV) < 1.2 x 10-(12) cm s(-1), and I(>240 GeV) < 4.5 x 10(-12) cm(-2) s(-1) for GRS 1915+105, Circinus X-1, and V4641 Sgr, respectively. Conclusions. The gamma-ray upper limits obtained using H.E.S.S. are examined in the context of previous Cherenkov telescope observations of microquasars. The effect of intrinsic absorption is modelled for each target and found to have negligible impact on the flux of escaping gamma-rays. When combined with the X-ray behaviour observed using RXTE, the derived results indicate that if detectable VHE gamma-ray emission from microquasars is commonplace, then it is likely to be highly transient.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201527773
1432-0746
wos:2018
A10
WOS:000429404700010
Bordas, P (reprint author), Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.; Schussler, F (reprint author), CEA Saclay, DSM Irfu, F-91191 Gif Sur Yvette, France.; Ernenwein, JP (reprint author), Aix Marseille Univ, CNRS, IN2P3, CPPM UMR 7346, F-13288 Marseille, France.; Chadwick, PM (reprint author), Univ Durham, Dept Phys, South Rd, Durham DH1 3LE, England.; Dickinson, HJ (reprint author), Iowa State Univ, Ames, IA 50011 USA.
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; UK Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish Ministry of Science and Higher EducationMinistry of Science and Higher Education, Poland; South African Department of Science and Technology; National Research Foundation; University of Namibia
2021-12-10T09:32:50+00:00
sword
importub
filename=package.tar
97cba50c8b0b513bba68af016d30d248
Bordas, P.
Schuessler, F.
Ernenwein, J. - P.
Chadwick, P. M.
Dickinson, H. J.
false
true
Hassan E. Abdalla
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
A. G. Akhperjanian
E. O. Anguenee
M. Arrieta
P. Aubert
M. Backes
A. Balzer
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
E. Birsin
R. Blackwell
M. Boettcher
C. Boisson
J. Bolmont
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
T. Bulik
M. Capasso
J. Carr
Sabrina Casanova
P. M. Chadwick
N. Chakraborty
R. Chalme-Calvet
R. C. G. Chaves
A. Chen
J. Chevalier
M. Chretien
S. Colafrancesco
G. Cologna
B. Condon
J. Conrad
C. Couturier
Y. Cui
I. D. Davids
B. Degrange
C. Deil
P. deWilt
H. J. Dickinson
A. Djannati-Atai
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
J. -P. Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. V. Fernandes
A. Fiasson
G. Fontaine
A. Foerster
S. Funk
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
A. Goya
M. -H. Grondin
M. Grudzinska
D. Hadasch
J. Hahn
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
J. A. Hinton
W. Hofmann
Clemens Hoischen
M. Holler
D. Horns
A. Ivascenko
A. Jacholkowska
M. Jamrozy
M. Janiak
D. Jankowsky
F. Jankowsky
M. Jingo
T. Jogler
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
U. Katz
D. Kerszberg
B. Khelifi
M. Kieffer
J. King
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lau
J. -P. Lees
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Liu
I. Lypova
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
U. Menzler
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
K. Mora
E. Moulin
T. Murach
M. de Naurois
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Oettl
S. Ohm
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
P. -O. Petrucci
B. Peyaud
S. Pita
H. Poona
D. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwemmer
A. S. Seyffert
N. Shafi
I. Shilon
R. Simoni
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
I. Sushch
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
M. Tluczykont
C. Trichard
R. Tuffs
J. van der Walt
C. van Eldik
B. van Soelen
G. Vasileiadis
J. Veh
C. Venters
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
N. Zywucka
eng
uncontrolled
gamma rays: general
eng
uncontrolled
X-rays: binaries
eng
uncontrolled
X-rays: individuals: GRS 1915+105
eng
uncontrolled
X-rays: individuals: Circinus X-1
eng
uncontrolled
X-rays: individuals: V4641 Sgr
Astronomie und zugeordnete Wissenschaften
Physik
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
53096
2018
2018
eng
18
612
article
EDP Sciences
Les Ulis
H E S S Collaboration
1
2018-04-09
2018-04-09
--
Population study of Galactic supernova remnants at very high gamma-ray energies with HESS
Shell-type supernova remnants (SNRs) are considered prime candidates for the acceleration of Galactic cosmic rays (CRs) up to the knee of the CR spectrum at E approximate to 3 x 10(15) eV. Our MilkyWay galaxy hosts more than 350 SNRs discovered at radio wavelengths and at high energies, of which 220 fall into the H.E.S.S. Galactic Plane Survey (HGPS) region. Of those, only 50 SNRs are coincident with a H.E.S.S source and in 8 cases the very high-energy (VHE) emission is firmly identified as an SNR. The H.E.S.S. GPS provides us with a legacy for SNR population study in VHE gamma-rays and we use this rich data set to extract VHE flux upper limits from all undetected SNRs. Overall, the derived flux upper limits are not in contradiction with the canonical CR paradigm. Assuming this paradigm holds true, we can constrain typical ambient density values around shell-type SNRs to n <= 7 cm(-3) and electron-to-proton energy fractions above 10 TeV to epsilon(ep) <= 5 x 10(-3). Furthermore, comparisons of VHE with radio luminosities in non-interacting SNRs reveal a behaviour that is in agreement with the theory of magnetic field amplification at shell-type SNRs.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201732125
1432-0746
wos:2018
A3
WOS:000429404700003
Hahn, J; Marandon, V (reprint author), Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.; Chaves, RCG; Fernandez, D; Renaud, M (reprint author), Univ Montpellier, CNRS, IN2P3, Lab Univ & Particules Montpellier, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France.
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); Alexander von Humboldt FoundationAlexander von Humboldt Foundation; Deutsche ForschungsgemeinschaftGerman Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; U.K. Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish National Science Centre; South African Department of Science and Technology; National Research Foundation; University of Namibia; National Commission on Research, Science & Technology of Namibia (NCRST); Innsbruck University; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Austrian Federal Ministry for Science, Research and Economy; University of Adelaide; Australian Research CouncilAustralian Research Council; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; University of Amsterdam; EGI Federation
2021-12-13T11:18:44+00:00
sword
importub
filename=package.tar
8e273a31616d64d091d2c7f58ef83866
false
true
Hassan E. Abdalla
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
E. O. Anguener
M. Arakawa
M. Arrieta
P. Aubert
M. Backes
A. Balzer
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
R. Blackwell
M. Boettcher
C. Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
N. Chakraborty
R. C. G. Chaves
A. Chen
J. Chevalier
S. Colafrancesco
B. Condon
J. Conrad
I. D. Davids
J. Decock
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Donath
K. Dutson
J. Dyks
T. Edwards
Kathrin Egberts
G. Emery
J. -P. Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. V. Fernandes
D. Fernandez
A. Fiasson
G. Fontaine
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
T. Garrigoux
F. Gate
G. Giavitto
B. Giebels
D. Glawion
J. F. Glicenstein
D. Gottschall
M. -H. Grondin
J. Hahn
M. Haupt
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
J. A. Hinton
W. Hofmann
Clemens Hoischen
T. L. Holch
M. Holler
D. Horns
A. Ivascenko
H. Iwasaki
A. Jacholkowska
M. Jamrozy
D. Jankowsky
F. Jankowsky
M. Jingo
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
J. King
S. Klepser
D. Klochkov
W. Kluzniak
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
P. P. Krueger
H. Laffon
G. Lamanna
J. Lau
J. -P. Lees
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Liu
R. Lopez-Coto
I. Lypova
D. Malyshev
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
K. Mora
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
N. W. Pekeur
G. Pelletier
C. Perennes
P. -O. Petrucci
B. Peyaud
Q. Piel
S. Pita
V. Poireau
H. Poon
D. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
C. B. Rulten
S. Safi-Harb
V. Sahakian
S. Saito
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Settimo
A. S. Seyffert
N. Shafi
I. Shilon
K. Shiningayamwe
R. Simoni
H. Sol
F. Spanier
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
I. Sushch
T. Takahashi
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
J. Zorn
N. Zywucka
eng
uncontrolled
gamma rays: general
eng
uncontrolled
ISM: supernova remnants
Physik
Institut für Physik und Astronomie
Import
50442
2019
2019
eng
18
621
article
EDP Sciences
Les Ulis
HESS Collaboration
1
2019-01-15
--
--
Particle transport within the pulsar wind nebula HESS J1825-137
Context. We present a detailed view of the pulsar wind nebula (PWN) HESS J1825-137. We aim to constrain the mechanisms dominating the particle transport within the nebula, accounting for its anomalously large size and spectral characteristics. Aims. The nebula was studied using a deep exposure from over 12 years of H.E.S.S. I operation, together with data from H.E.S.S. II that improve the low-energy sensitivity. Enhanced energy-dependent morphological and spatially resolved spectral analyses probe the very high energy (VHE, E > 0.1 TeV) gamma-ray properties of the nebula. Methods. The nebula emission is revealed to extend out to 1.5 degrees from the pulsar, similar to 1.5 times farther than previously seen, making HESS J1825-137, with an intrinsic diameter of similar to 100 pc, potentially the largest gamma-ray PWN currently known. Characterising the strongly energy-dependent morphology of the nebula enables us to constrain the particle transport mechanisms. A dependence of the nebula extent with energy of R proportional to E alpha with alpha = -0.29 +/- 0.04(stat) +/- 0.05(sys) disfavours a pure diffusion scenario for particle transport within the nebula. The total gamma-ray flux of the nebula above 1 TeV is found to be (1.12 +/- 0.03(stat) +/- 0.25(sys)) +/- 10(-11) cm(-2) s(-1), corresponding to similar to 64% of the flux of the Crab nebula. Results. HESS J1825-137 is a PWN with clearly energy-dependent morphology at VHE gamma-ray energies. This source is used as a laboratory to investigate particle transport within intermediate-age PWNe. Based on deep observations of this highly spatially extended PWN, we produce a spectral map of the region that provides insights into the spectral variation within the nebula.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201834335
1432-0746
wos:2019
A116
WOS:000455572500001
Mitchell, AMW (reprint author), Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.; Caroff, S (reprint author), Ecole Polytech, IN2P3, CNRS, Lab Leprince Ringuet, F-91128 Palaiseau, France.; Mitchell, AMW (reprint author), Univ Zurich, Phys Inst, Winterthurerstr 190, CH-8057 Zurich, Switzerland.
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); Helmholtz AssociationHelmholtz Association; Alexander von Humboldt FoundationAlexander von Humboldt Foundation; French Ministry of Higher Education, Research and Innovation; Centre National de la Recherche Scientifique (CNRS/IN2P3); Commissariat a Energy Commission; UK Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); Knut and Alice Wallenberg FoundationKnut & Alice Wallenberg Foundation; National Science Centre, Poland [2016/22/M/ST9/00382]; South African Department of Science and Technology; National Research Foundation; University of Namibia; National Commission on Research, Science& Technology of Namibia (NCRST); Austrian Federal Ministry of Education, Science and Research; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Australian Research Council (ARC)Australian Research Council; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; University of Amsterdam; Centre National de la Recherche Scientifique (CNRS/INSU)Centre National de la Recherche Scientifique (CNRS)
2021-04-20T12:30:01+00:00
sword
importub
filename=package.tar
1002341c58905c946a2f6e28105aa650
false
true
Hassan E. Abdalla
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Arcaro
C. Armand
M. Arrieta
M. Backes
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
K. Bernloehr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
T. Bylund
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
N. Chakraborty
T. Chand
S. Chandra
R. C. G. Chaves
A. Chen
S. Colafrancesco
B. Condon
I. D. Davids
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Dmytriiev
A. Donath
V Doroshenko
J. Dyks
Kathrin Egberts
G. Emery
J-P Ernenwein
S. Eschbach
S. Fegan
A. Fiasson
G. Fontaine
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
F. Gate
G. Giavitto
D. Glawion
J. F. Glicenstein
D. Gottschall
M-H Grondin
J. Hahn
M. Haupt
G. Heinzelmann
G. Henri
G. Hermann
James Anthony Hinton
W. Hofmann
Clemens Hoischen
Tim Lukas Holch
M. Holler
D. Horns
D. Huber
H. Iwasaki
A. Jacholkowska
M. Jamrozy
D. Jankowsky
F. Jankowsky
L. Jouvin
I Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
J. King
S. Klepser
W. Kluzniak
Nu Komin
K. Kosack
M. Kraus
G. Lamanna
J. Lau
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J-P Lenain
Eva Leser
T. Lohse
R. Lopez-Coto
I Lypova
D. Malyshev
V Marandon
A. Marcowith
C. Mariaud
G. Marti-Devesa
R. Marx
G. Maurin
P. J. Meintjes
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
C. Moore
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I Oya
M. Panter
R. D. Parsons
C. Perennes
P-O Petrucci
B. Peyaud
Q. Piel
S. Pita
V Poireau
A. Priyana Noel
D. A. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
E. Ruiz-Velasco
V Sahakian
S. Saito
David M. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
H. Schutte
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Senniappan
A. S. Seyffert
N. Shafi
I Shilon
K. Shiningayamwe
R. Simoni
A. Sinha
H. Sol
A. Specovius
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
T. Takahashi
J-P Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
R. M. Wagner
R. White
A. Wierzcholska
R. Yang
H. Yoneda
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
J. Zorn
N. Zywucka
eng
uncontrolled
gamma rays: general
eng
uncontrolled
acceleration of particles
eng
uncontrolled
convection
eng
uncontrolled
diffusion
eng
uncontrolled
pulsars: general
Physik
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
53100
2018
2018
eng
23
612
article
EDP Sciences
Les Ulis
H E S S Collaboration
1
2018-04-09
2018-04-09
--
A search for new supernova remnant shells in the Galactic plane with HESS
A search for new supernova remnants (SNRs) has been conducted using TeV gamma-ray data from the H.E.S.S. Galactic plane survey. As an identification criterion, shell morphologies that are characteristic for known resolved TeV SNRs have been used. Three new SNR candidates were identified in the H.E.S.S. data set with this method. Extensive multiwavelength searches for counterparts were conducted. A radio SNR candidate has been identified to be a counterpart to HESS J1534-571. The TeV source is therefore classified as a SNR. For the other two sources, HESS J1614-518 and HESS J1912 + 101, no identifying counterparts have been found, thus they remain SNR candidates for the time being. TeV-emitting SNRs are key objects in the context of identifying the accelerators of Galactic cosmic rays. The TeV emission of the relativistic particles in the new sources is examined in view of possible leptonic and hadronic emission scenarios, taking the current multiwavelength knowledge into account.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201730737
1432-0746
wos:2018
A8
WOS:000429404700008
Capasso, M; Gottschall, D; Puhlhofer, G (reprint author), Univ Tubingen, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany.
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); Alexander von Humboldt FoundationAlexander von Humboldt Foundation; Deutsche ForschungsgemeinschaftGerman Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; UK Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish National Science Centre; South African Department of Science and Technology; National Research Foundation; University of Namibia; National Commission on Research, Science & Technology of Namibia (NCRST); Innsbruck University; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Austrian Federal Ministry for Science, Research and Economy; University of Adelaide; Australian Research CouncilAustralian Research Council; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; University of Amsterdam; EGI Federation
2021-12-13T11:52:20+00:00
sword
importub
filename=package.tar
071eedd4d0dfddcdefea08a0b4de33a6
false
true
Hassan E. Abdalla
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
A. G. Akhperjanian
T. Andersson
E. O. Anguener
M. Arakawa
M. Arrieta
P. Aubert
M. Backes
A. Balzer
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
R. Blackwell
M. Boettcher
C. Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
M. Capasso
J. Carr
Sabrina Casanova
M. Cerruti
N. Chakraborty
R. C. G. Chaves
A. Chen
J. Chevalier
M. Coffaro
S. Colafrancesco
G. Cologna
B. Condon
J. Conrad
Y. Cui
I. D. Davids
J. Decock
B. Degrange
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
W. Domainko
A. Donath
K. Dutson
J. Dyks
T. Edwards
Kathrin Egberts
P. Eger
J. -P. Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. V. Fernandes
A. Fiasson
G. Fontaine
A. Foerster
S. Funk
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
A. Goyal
M. -H. Grondin
J. Hahn
M. Haupt
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
J. A. Hinton
W. Hofmann
Clemens Hoischen
T. L. Holch
M. Holler
D. Horns
A. Ivascenko
H. Iwasaki
A. Jacholkowska
M. Jamrozy
M. Janiak
D. Jankowsky
F. Jankowsky
M. Jingo
T. Jogler
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
J. King
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
P. P. Krueger
H. Laffon
G. Lamanna
J. Lau
J. -P. Lees
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Liu
R. Lopez-Coto
I. Lypova
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitche
R. Moderski
M. Mohamed
L. Mohrmann
K. Mora
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Oettl
S. Ohm
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
N. W. Pekeur
G. Pelletier
C. Perennes
P. -O. Petrucci
B. Peyaud
Q. Piel
S. Pita
H. Poon
D. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
S. Richter
F. Rieger
C. Romoli
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
S. Saito
D. Salek
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Settimo
A. S. Seyffert
N. Shafi
I. Shilon
R. Simoni
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
K. Stycz
I. Sushch
T. Takahashi
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Wale
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
N. Zywucka
A. Bamba
Y. Fukui
H. Sano
S. Yoshiike
eng
uncontrolled
astroparticle physics
eng
uncontrolled
ISM: supernova remnants
eng
uncontrolled
cosmic rays
Physik
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
51180
2018
2018
eng
10
619
article
EDP Sciences
Les Ulis
HESS Collaboration Fermi LAT Collaborators
1
2018-11-08
2018-11-08
--
The gamma-ray spectrum of the core of Centaurus A as observed with HESS and Fermi-LAT
Centaurus A (Cen A) is the nearest radio galaxy discovered as a very-high-energy (VHE; 100 GeV-100 TeV) gamma-ray source by the High Energy Stereoscopic System (H.E.S.S.). It is a faint VHE gamma-ray emitter, though its VHE flux exceeds both the extrapolation from early Fermi-LAT observations as well as expectations from a (misaligned) single-zone synchrotron-self Compton (SSC) description. The latter satisfactorily reproduces the emission from Cen A at lower energies up to a few GeV. New observations with H.E.S.S., comparable in exposure time to those previously reported, were performed and eight years of Fermi-LAT data were accumulated to clarify the spectral characteristics of the gamma-ray emission from the core of Cen A. The results allow us for the first time to achieve the goal of constructing a representative, contemporaneous gamma-ray core spectrum of Cen A over almost five orders of magnitude in energy. Advanced analysis methods, including the template fitting method, allow detection in the VHE range of the core with a statistical significance of 12 sigma on the basis of 213 hours of total exposure time. The spectrum in the energy range of 250 GeV-6 TeV is compatible with a power-law function with a photon index Gamma = 2.52 +/- 0.13(stat) +/- 0.20(sys). An updated Fermi-LAT analysis provides evidence for spectral hardening by Delta Gamma similar or equal to 0.4 +/- 0.1 at gamma-ray energies above 2.8(-0.6)(+1.0) GeV at a level of 4.0 sigma. The fact that the spectrum hardens at GeV energies and extends into the VHE regime disfavour a single-zone SSC interpretation for the overall spectral energy distribution (SED) of the core and is suggestive of a new gamma-ray emitting component connecting the high-energy emission above the break energy to the one observed at VHE energies. The absence of significant variability at both GeV and TeV energies does not yet allow disentanglement of the physical nature of this component, though a jet-related origin is possible and a simple two-zone SED model fit is provided to this end.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201832640
1432-0746
wos:2018
A71
WOS:000449725100001
Abdalla, H (reprint author), North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa., phdmitry@gmail.com; jmagill@umd.edu
2021-06-30T10:32:12+00:00
sword
importub
filename=package.tar
5c2c896f570f6942638270f819239b3d
Abdalla, H.
Hassan E. Abdalla
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Armand
M. Arrieta
M. Backes
A. Balzer
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
N. Chakraborty
R. C. G. Chaves
A. Chen
J. Chevalier
S. Colafrancesco
B. Condon
J. Conrad
I. D. Davids
J. Decock
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Donath
J. Dyks
T. Edwards
Kathrin Egberts
G. Emery
J-P Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. Fernandes
A. Fiasson
G. Fontaine
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
T. Garrigoux
F. Gate
G. Giavitto
D. Glawion
J. F. Glicenstein
D. Gottschall
M-H Grondin
J. Hahn
M. Haupt
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
J. A. Hinton
W. Hofmann
Clemens Hoischen
T. L. Holch
M. Holler
D. Horns
A. Ivascenko
H. Iwasaki
A. Jacholkowska
M. Jamrozy
D. Jankowsky
F. Jankowsky
M. Jingo
L. Jouvin
I Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
J. King
S. Klepser
D. Klochkov
W. Kluzniak
Nu Komin
K. Kosack
S. Krakau
M. Kraus
P. P. Kruger
H. Laffon
G. Lamanna
J. Lau
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J-P Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Liu
R. Lopez-Coto
I Lypova
D. Malyshev
V Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
K. Mora
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I Oya
M. Padovani
M. Panter
R. D. Parsons
N. W. Pekeur
G. Pelletier
C. Perennes
P-O Petrucci
B. Peyaud
Q. Piel
S. Pita
V Poireau
D. A. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
C. B. Rulten
V Sahakian
S. Saito
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
A. S. Seyffert
N. Shafi
I Shilon
K. Shiningayamwe
R. Simoni
H. Sol
F. Spanier
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
Iurii Sushch
T. Takahashi
J-P Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
J. Zorn
N. Zywucka
J. D. Magill
S. Buson
C. C. Cheung
J. S. Perkins
Y. Tanaka
eng
uncontrolled
gamma rays: galaxies
eng
uncontrolled
radiation mechanisms: non-thermal
Astronomie und zugeordnete Wissenschaften
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
50941
2018
2018
eng
14
620
article
EDP Sciences
Les Ulis
HESS Collaboration
1
2018-12-03
2018-12-03
--
First ground-based measurement of sub-20 GeV to 100 GeV gamma-Rays from the Vela pulsar with HESS II
Aims. We report on the measurement and investigation of pulsed high-energy y-ray emission from the Vela pulsar, PSR B0833-45, based on observations with the largest telescope of H.E.S.S., CT5, in monoscopic mode, and on data obtained with the Fermi-LAT. Methods. Data from 40.3 h of observations carried out with the H.E.S.S. II array from 2013 to 2015 have been used. A dedicated very low-threshold event reconstruction and analysis pipeline was developed to achieve the lowest possible energy threshold. Eight years of Fermi-LAT data were analysed and also used as reference to validate the CT5 telescope response model and analysis methods. Results. A pulsed gamma-ray signal at a significance level of more than 15 sigma is detected from the P2 peak of the Vela pulsar light curve. Of a total of 15 835 events, more than 6000 lie at an energy below 20 GeV, implying a significant overlap between H.E.S.S. II-CT5 and the Fermi-LAT. While the investigation of the pulsar light curve with the LAT confirms characteristics previously known up to 20 GeV in the tens of GeV energy range, CT5 data show a change in the pulse morphology of P2, i.e. an extreme sharpening of its trailing edge, together with the possible onset of a new component at 3.4 sigma significance level. Assuming a power-law model for the P2 spectrum, an excellent agreement is found for the photon indices (Gamma similar or equal to 4.1) obtained with the two telescopes above 10 GeV and an upper bound of 8% is derived on the relative offset between their energy scales. Using data from both instruments, it is shown however that the spectrum of P2 in the 10-100 GeV has a pronounced curvature; this is a confirmation of the sub-exponential cut-off form found at lower energies with the LAT. This is further supported by weak evidence of an emission above 100 GeV obtained with CT5. In contrast, converging indications are found from both CT5 and LAT data for the emergence of a hard component above 50 GeV in the leading wing (LW2) of P2, which possibly extends beyond 100 GeV. Conclusions. The detection demonstrates the performance and understanding of CT5 from 100 GeV down to the sub-20 GeV domain, i.e. unprecedented low energy for ground-based gamma-ray astronomy. The extreme sharpening of the trailing edge of the P2 peak found in the H.E.S.S. II light curve of the Vela pulsar and the possible extension beyond 100 GeV of at least one of its features, LW2, provide further constraints to models of gamma-Ray emission from pulsars.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201732153
1432-0746
wos:2018
A66
WOS:000452434100001
Venter, C (reprint author), North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa.; Holler, M (reprint author), Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria.; Tavernier, T (reprint author), Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France.; Djannati-Atai, A (reprint author), Univ Paris Diderot, Observ Paris, Sorbonne Paris Cite, CEA Irfu,APC,CNRS,IN2P3, 10 Rue Alice Domon Leonie Duquet, F-75205 Paris, France.; Giavitto, G (reprint author), DESY, D-15738 Zeuthen, Germany.
2021-06-14T05:55:27+00:00
sword
importub
filename=package.tar
7d4910317472fdd902f88d58b66c5bb0
Venter, C.
Holler, M.
Tavernier, T.
Djannati-Atai, A.
Giavitto, G.
false
true
Hassan E. Abdalla
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Arcaro
C. Armand
M. Arrieta
M. Backes
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernlohr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
T. Bylund
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
N. Chakraborty
S. Chandra
A. Chen
S. Colafrancesco
B. Condon
I. D. Davids
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Dmytriiev
A. Donath
V Doroshenko
J. Dyks
Kathrin Egberts
G. Emery
J-P Ernenwein
S. Eschbach
S. Fegan
A. Fiasson
G. Fontaine
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
F. Gate
G. Giavitto
D. Glawion
J. F. Glicenstein
D. Gottschall
M-H Grondin
J. Hahn
M. Haupt
G. Heinzelmann
G. Henri
G. Hermann
J. A. Hinton
W. Hofmann
Clemens Hoischen
T. L. Holch
M. Holler
D. Horns
D. Huber
H. Iwasaki
A. Jacholkowska
M. Jamrozy
D. Jankowsky
F. Jankowsky
L. Jouvin
I Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
J. King
S. Klepser
W. Kluzniak
Nu Komin
K. Kosack
S. Krakau
M. Kraus
P. P. Krüger
G. Lamanna
J. Lau
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J-P Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Lopez-Coto
I Lypova
D. Malyshev
V Marandon
A. Marcowith
C. Mariaud
G. Marti-Devesa
R. Marx
G. Maurin
P. J. Meintjes
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I Oya
M. Padovani
M. Panter
R. D. Parsons
C. Perennes
P-O Petrucci
B. Peyaud
Q. Piel
S. Pita
V Poireau
A. Priyana Noel
D. A. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
E. Ruiz-Velasco
V Sahakian
S. Saito
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Senniappan
A. S. Seyffert
N. Shafi
I Shilon
K. Shiningayamwe
R. Simoni
A. Sinha
H. Sol
F. Spanier
A. Specovius
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
T. Takahashi
J-P Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
R. M. Wagner
R. White
A. Wierzcholska
R. Yang
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
J. Zorn
N. Zywucka
M. Kerr
S. Johnston
R. M. Shannon
eng
uncontrolled
gamma rays: stars
eng
uncontrolled
pulsars: individual: PSR B0833-45
eng
uncontrolled
radiation mechanisms: non-thermal
Astronomie und zugeordnete Wissenschaften
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
55360
2017
2017
eng
11
598
article
EDP Sciences
Les Ulis
HESS Collaboration
1
2017-01-27
2017-01-27
--
Characterizing the gamma-ray long-term variability of PKS2155 304 with HESS and Fermi-LAT
Studying the temporal variability of BL Lac objects at the highest energies provides unique insights into the extreme physical processes occurring in relativistic jets and in the vicinity of super-massive black holes. To this end, the long-term variability of the BL Lac object PKS 2155 304 is analyzed in the high (HE, 100MeV < E < 300 GeV) and very high energy (VHE, E > 200 GeV) gamma-ray domain. Over the course of similar to 9 yr of H. E. S. S. observations the VHE light curve in the quiescent state is consistent with a log-normal behavior. The VHE variability in this state is well described by flicker noise (power-spectral-density index beta(VHE) = 1 .10(+ 0 : 10) (0 : 13)) on timescales larger than one day. An analysis of similar to 5.5 yr of HE Fermi-LAT data gives consistent results (beta(HE) = 1 : 20(+ 0 : 21) (0 : 23), on timescales larger than 10 days) compatible with the VHE findings. The HE and VHE power spectral densities show a scale invariance across the probed time ranges. A direct linear correlation between the VHE and HE fluxes could neither be excluded nor firmly established. These long-term-variability properties are discussed and compared to the red noise behavior (beta similar to 2) seen on shorter timescales during VHE-flaring states. The difference in power spectral noise behavior at VHE energies during quiescent and flaring states provides evidence that these states are influenced by different physical processes, while the compatibility of the HE and VHE long-term results is suggestive of a common physical link as it might be introduced by an underlying jet-disk connection.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201629419
1432-0746
0004-6361
wos:2017
A39
WOS:000394465000039
Abdalla, H (reprint author), North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa.
2022-06-27T14:48:37+00:00
sword
importub
filename=package.tar
d9f0f8d3f172ab3793336ab0ef5c9905
false
true
H. Abdalla
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
A. G. Akhperjanian
T. Andersson
E. O. Anguener
M. Arrieta
P. Aubert
M. Backes
A. Balzer
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernlorhr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
T. Bulik
M. Capasso
J. Carr
Sabrina Casanova
M. Cerruti
N. Chakraborty
R. Chalme-Calvet
R. C. G. Chaves
A. Chen
J. Chevalier
M. Chretien
S. Colafrancesco
G. Cologna
B. Condon
J. Conrad
Y. Cui
I. D. Davids
J. Decock
B. Degrange
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
T. Edwards
Kathrin Egberts
P. Eger
J. -P. Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. V. Fernandes
A. Fiasson
G. Fontaine
A. Foerster
S. Funk
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
A. Goyal
M. -H. Grondin
D. Hadasch
J. Hahn
M. Haupt
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
J. A. Hinton
W. Hofmann
Clemens Hoischen
M. Holler
D. Horns
A. Ivascenko
A. Jacholkowska
M. Jamrozy
M. Janiak
D. Jankowsky
F. Jankowsky
M. Jingo
T. Jogler
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
U. Katz
D. Kerszberg
B. Khelifi
M. Kie Ff Er
J. King
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
F. Krayzel
P. P. Kruger
H. Laffon
G. Lamanna
J. Lau
J. -P. Lees
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
E. Leser
T. Lohse
M. Lorentz
R. Liu
R. Lopez-Coto
I. Lypova
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
K. Mora
E. Moulin
T. Murach
M. de Naurois
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Oettl
S. Ohm
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
N. W. Pekeur
G. Pelletier
C. Perennes
P. -O. Petrucci
B. Peyaud
Q. Piel
S. Pita
H. Poon
D. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
U. Schwanke
S. Schwemmer
M. Settimo
A. S. Seyffert
N. Shafi
I. Shilon
R. Simoni
H. Sol
F. Spanier
G. Spengler
F. Spies
Ff Ert
L. Stawarz
R. Steenkamp
Christian Michael Stegmann
F. Stinzing
K. Stycz
I. Sushch
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
N. Zywucka
eng
uncontrolled
galaxies: active
eng
uncontrolled
BL Lacertae objects: individual: PKS 2155-304
eng
uncontrolled
gamma rays: galaxies
eng
uncontrolled
galaxies: jets
eng
uncontrolled
galaxies: nuclei
eng
uncontrolled
radiation mechanisms: non-thermal
Astronomie und zugeordnete Wissenschaften
Institut für Physik und Astronomie
Referiert
Import
48936
2019
2019
eng
3886
3891
6
3
486
article
Oxford Univ. Press
Oxford
H E S S Collaboration
1
--
2019-04-10
--
H.E.S.S. observations of the flaring gravitationally lensed galaxy PKS 1830-211
PKS 1830-211 is a known macrolensed quasar located at a redshift of z = 2.5. Its highenergy gamma-ray emission has been detected with the Fermi-Large Area Telescope (LAT) instrument and evidence for lensing was obtained by several authors from its high-energy data. Observations of PKS 1830-211 were taken with the High Energy Stereoscopic System (H.E.S.S.) array of Imaging Atmospheric Cherenkov Telescopes in 2014 August, following a flare alert by the Fermi-LAT Collaboration. The H.E.S.S observations were aimed at detecting a gamma-ray flare delayed by 20-27 d from the alert flare, as expected from observations at other wavelengths. More than 12 h of good-quality data were taken with an analysis threshold of similar to 67 GeV. The significance of a potential signal is computed as a function of the date and the average significance over the whole period. Data are compared to simultaneous observations by Fermi-LAT. No photon excess or significant signal is detected. An upper limit on PKS 1830-211 flux above 67 GeV is computed and compared to the extrapolation of the Fermi-LAT flare spectrum.
Monthly notices of the Royal Astronomical Society
10.1093/mnras/stz1031
0035-8711
1365-2966
wos:2019
WOS:000474903500069
Abdalla, H (reprint author), North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa.
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); Helmholtz AssociationHelmholtz Association; Alexander von Humboldt FoundationAlexander von Humboldt Foundation; French Ministry of Higher Education, Research and Innovation; Centre National de la Recherche Scientifique (CNRS/IN2P3); UK Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); Knut and Alice Wallenberg FoundationKnut & Alice Wallenberg Foundation; National Science Centre, Poland [2016/22/M/ST9/00382]; South African Department of Science and Technology; University of Namibia; National Commission on Research, Science and Technology of Namibia (NCRST); Austrian Federal Ministry of Education, Science and Research; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Australian Research Council (ARC)Australian Research Council; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; University of Amsterdam; (CEA)French Atomic Energy Commission; National Research Foundation; Centre National de la Recherche Scientifique (CNRS/INSU)Centre National de la Recherche Scientifique (CNRS)
2021-01-15T14:44:38+00:00
sword
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filename=package.tar
079ec04b2dd0ec0ae734aa6c986defd1
false
true
Hassan E. Abdalla
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Arcaro
C. Armand
M. Arrieta
M. Backes
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
K. Bernloehr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buchele
T. Bulik
T. Bylund
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
N. Chakraborty
T. Chand
S. Chandra
R. C. G. Chaves
A. Chen
S. Colafrancesco
B. Condon
I. D. Davids
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Dmytriiev
A. Donath
V. Doroshenko
J. Dyks
Kathrin Egberts
G. Emery
J. -P. Ernenwein
S. Eschbach
S. Fegan
A. Fiasson
G. Fontaine
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
F. Gate
G. Giavitto
D. Glawion
J. F. Glicenstein
D. Gottschall
M. -H. Grondin
J. Hahn
M. Haupt
G. Heinzelmann
G. Henri
G. Hermann
James Anthony Hinton
W. Hofmann
Clemens Hoischen
Tim Lukas Holch
M. Holler
D. Horns
D. Huber
H. Iwasaki
A. Jacholkowska
M. Jamrozy
D. Jankowsky
F. Jankowsky
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Khangulyan
B. Khelifi
J. King
S. Klepser
W. Kluzniak
Nu. Komin
K. Kosack
M. Kraus
G. Lamanna
J. Lau
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
T. Lohse
R. Lopez-Coto
M. Lorentz
I. Lypova
D. Malyshev
V. Marandon
A. Marcowith
C. Mariaud
G. Marti-Devesa
R. Marx
G. Maurin
P. J. Meintjes
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
C. Moore
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I. Oya
M. Panter
R. D. Parsons
C. Perennes
P. -O. Petrucci
B. Peyaud
Q. Piel
S. Pita
V. Poireau
A. Priyana Noel
D. A. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
E. Ruiz-Velasco
V. Sahakian
S. Saito
David M. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
H. Schutte
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Senniappan
A. S. Seyffert
N. Shafi
I. Shilon
K. Shiningayamwe
R. Simoni
A. Sinha
H. Sol
A. Specovius
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
T. Takahashi
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
R. M. Wagner
R. White
A. Wierzcholska
R. Yang
H. Yoneda
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
A. Ziegler
J. Zorn
N. Zywucka
eng
uncontrolled
gravitational lensing: strong
eng
uncontrolled
diffuse radiation
eng
uncontrolled
gamma-rays: galaxies
Physik
Institut für Physik und Astronomie
Referiert
Import
Green Open-Access
56610
2020
2020
eng
8
644
article
EDP Sciences
Les Ulis
HESS Collaboration
1
2020-12-07
2020-12-07
--
An extreme particle accelerator in the Galactic plane
The unidentified very-high-energy (VHE; E > 0.1 TeV) gamma -ray source, HESS J1826-130, was discovered with the High Energy Stereoscopic System (HESS) in the Galactic plane. The analysis of 215 h of HESS data has revealed a steady gamma -ray flux from HESS J1826-130, which appears extended with a half-width of 0.21 degrees +/- 0.02 <br /> (stat)degrees <br /> stat degrees +/- 0.05 <br /> (sys)degrees sys degrees . The source spectrum is best fit with either a power-law function with a spectral index Gamma = 1.78 +/- 0.10(stat) +/- 0.20(sys) and an exponential cut-off at 15.2 <br /> (+5.5)(-3.2) -3.2+5.5 TeV, or a broken power-law with Gamma (1) = 1.96 +/- 0.06(stat) +/- 0.20(sys), Gamma (2) = 3.59 +/- 0.69(stat) +/- 0.20(sys) for energies below and above E-br = 11.2 +/- 2.7 TeV, respectively. The VHE flux from HESS J1826-130 is contaminated by the extended emission of the bright, nearby pulsar wind nebula, HESS J1825-137, particularly at the low end of the energy spectrum. Leptonic scenarios for the origin of HESS J1826-130 VHE emission related to PSR J1826-1256 are confronted by our spectral and morphological analysis. In a hadronic framework, taking into account the properties of dense gas regions surrounding HESS J1826-130, the source spectrum would imply an astrophysical object capable of accelerating the parent particle population up to greater than or similar to 200 TeV. Our results are also discussed in a multiwavelength context, accounting for both the presence of nearby supernova remnants, molecular clouds, and counterparts detected in radio, X-rays, and TeV energies.
Astronomy and astrophysics : an international weekly journal
HESS J1826-130
10.1051/0004-6361/202038851
0004-6361
1432-0746
outputup:dataSource:WoS:2020
A112
WOS:000598417600001
Casanova, S (corresponding author), Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.; Anguner, EO (corresponding author), Aix Marseille Univ, CPPM, CNRS, IN2P3, Marseille, France.; Casanova, S (corresponding author), Inst Fizyki Jadrowej PAN, Ul Radzikowskiego 152, PL-31342 Krakow, Poland.; Oya, I (corresponding author), DESY, D-15738 Zeuthen, Germany.; Bordas, P (corresponding author), Univ Barcelona IEEC UB, Inst Ciencies Cosmos ICC UB, Marti Franques 1, Barcelona 08028, Spain., contact.hess@hess-experiment.eu
German Ministry for Education and Research (BMBF)Federal Ministry of; Education & Research (BMBF); Max Planck SocietyMax Planck; SocietyFoundation CELLEX; German Research Foundation (DFG)German; Research Foundation (DFG); Helmholtz AssociationHelmholtz Association; Alexander von Humboldt FoundationAlexander von Humboldt Foundation; French Ministry of Higher Education, Research and Innovation; Centre; National de la Recherche Scientifique (CNRS/IN2P3 and CNRS/INSU); Commissariat a l'energie atomique et aux energies alternatives; (CEA)French Atomic Energy Commission; UK Science and Technology; Facilities Council (STFC)UK Research & Innovation (UKRI)Science &; Technology Facilities Council (STFC); Knut and Alice Wallenberg; FoundationKnut & Alice Wallenberg Foundation; National Science Centre,; PolandNational Science Centre, Poland [DEC-2017/27/B/ST9/02272]; South; African Department of Science and Technology; National Research; Foundation; University of Namibia; National Commission on Research,; Science & Technology of Namibia (NCRST); Austrian Federal Ministry of; Education, Science and Research; Austrian Science Fund (FWF)Austrian; Science Fund (FWF); Australian Research Council (ARC)Australian Research; Council; Japan Society for the Promotion of ScienceMinistry of; Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan; Society for the Promotion of Science; University of Amsterdam; EGI; Federation
Angüner, EO
2022-11-07T10:39:39+00:00
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e98980cc23fdee095969d483573d11d6
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1458466-9
<a href="https://publishup.uni-potsdam.de/56611">Bibliographieeintrag der Originalveröffentlichung/Quelle</a>
false
true
CC-BY - Namensnennung 4.0 International
H. Abdalla
R. Adam
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
C. Arcaro
C. Armand
T. Armstrong
H. Ashkar
M. Backes
V. Baghmanyan
V. Barbosa Martins
A. Barnacka
M. Barnard
Y. Becherini
D. Berge
K. Bernlohr
B. Bi
M. Bottcher
C. Boisson
J. Bolmont
M. de Bony de Lavergne
Pol Bordas
M. Breuhaus
F. Brun
P. Brun
M. Bryan
M. Buchele
T. Bulik
T. Bylund
S. Caroff
A. Carosi
Sabrina Casanova
T. Chand
S. Chandra
A. Chen
G. Cotter
M. Curylo
J. Damascene Mbarubucyeye
I. D. Davids
J. Davies
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Dmytriiev
A. Donath
V. Doroshenko
C. Duffy
J. Dyks
Kathrin Egberts
F. Eichhorn
S. Einecke
G. Emery
J. -P. Ernenwein
K. Feijen
S. Fegan
A. Fiasson
G. Fichet de Clairfontaine
G. Fontaine
S. Funk
Matthias Fussling
S. Gabici
Y. A. Gallant
G. Giavitto
L. Giunti
D. Glawion
J. F. Glicenstein
D. Gottschall
M. -H. Grondin
J. Hahn
M. Haupt
G. Hermann
J. A. Hinton
W. Hofmann
Clemens Hoischen
T. L. Holch
M. Holler
M. Horbe
D. Horns
D. Huber
M. Jamrozy
D. Jankowsky
F. Jankowsky
A. Jardin-Blicq
V. Joshi
I. Jung-Richardt
E. Kasai
M. A. Kastendieck
K. Katarzynski
U. Katz
D. Khangulyan
B. Khelifi
S. Klepser
W. Kluzniak
Nu. Komin
R. Konno
K. Kosack
D. Kostunin
M. Kreter
G. Lamanna
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
C. Levy
T. Lohse
I. Lypova
J. Mackey
J. Majumdar
D. Malyshev
D. Malyshev
V. Marandon
P. Marchegiani
A. Marcowith
A. Mares
G. Marti-Devesa
R. Marx
G. Maurin
P. J. Meintjes
M. Meyer
A. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
A. Montanari
C. Moore
P. Morris
E. Moulin
J. Muller
T. Murach
K. Nakashima
A. Nayerhoda
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
Patrick O'Brien
H. Odaka
S. Ohm
L. Olivera-Nieto
E. de Ona Wilhelmi
M. Ostrowski
I. Oya
M. Panter
S. Panny
R. D. Parsons
G. Peron
B. Peyaud
Q. Piel
S. Pita
V. Poireau
A. Priyana Noel
D. A. Prokhorov
H. Prokoph
G. Puhlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
P. Reichherzer
A. Reimer
O. Reimer
Q. Remy
M. Renaud
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
E. Ruiz-Velasco
V. Sahakian
S. Sailer
D. A. Sanchez
A. Santangelo
M. Sasaki
M. Scalici
F. Schussler
H. M. Schutte
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Senniappan
A. S. Seyffert
N. Shafi
K. Shiningayamwe
R. Simoni
A. Sinha
H. Sol
A. Specovius
S. Spencer
M. Spir-Jacob
L. Stawarz
L. Sun
R. Steenkamp
C. Stegmann
S. Steinmassl
C. Steppa
T. Takahashi
T. Tavernier
A. M. Taylor
R. Terrier
D. Tiziani
M. Tluczykont
L. Tomankova
C. Trichard
M. Tsirou
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
P. Vincent
J. Vink
H. J. Volk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
J. Watson
F. Werner
R. White
A. Wierzcholska
Yu Wun Wong
A. Yusafzai
M. Zacharias
R. Zanin
D. Zargaryan
A. A. Zdziarski
Alraune Zech
S. J. Zhu
A. Ziegler
J. Zorn
S. Zouari
N. Zywucka
eng
uncontrolled
ISM: supernova remnants
eng
uncontrolled
ISM: clouds
eng
uncontrolled
gamma rays: general
eng
uncontrolled
gamma rays:
eng
uncontrolled
ISM
Astronomie und zugeordnete Wissenschaften
Physik
Institut für Physik und Astronomie
Referiert
Import
Hybrid Open-Access
53343
2018
2018
eng
5
610
article
EDP Sciences
Les Ulis
1
2018-03-02
2018-03-02
--
Detection of variable VHE gamma-ray emission from the extra-galactic gamma-ray binary LMC P3
Context. Recently, the high-energy (HE, 0.1-100 GeV) gamma-ray emission from the object LMC P3 in the Large Magellanic Cloud (LMC) has been discovered to be modulated with a 10.3-day period, making it the first extra-galactic gamma-ray binary. Aims. This work aims at the detection of very-high-energy (VHE, >100 GeV) gamma-ray emission and the search for modulation of the VHE signal with the orbital period of the binary system. Methods. LMC P3 has been observed with the High Energy Stereoscopic System (H.E.S.S.); the acceptance-corrected exposure time is 100 h. The data set has been folded with the known orbital period of the system in order to test for variability of the emission. Results. VHE gamma-ray emission is detected with a statistical significance of 6.4 sigma. The data clearly show variability which is phase-locked to the orbital period of the system. Periodicity cannot be deduced from the H.E.S.S. data set alone. The orbit-averaged luminosity in the 1-10 TeV energy range is (1.4 +/- 0.2) x 10(35) erg s(-1). A luminosity of (5 +/- 1) x 10(35) erg s(-1) is reached during 20% of the orbit. HE and VHE gamma-ray emissions are anti-correlated. LMC P3 is the most luminous gamma-ray binary known so far.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201732426
1432-0746
wos:2018
L17
WOS:000427146200001
Komin, N (reprint author), Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa.; Haupt, M (reprint author), DESY, D-15738 Zeuthen, Germany., contact.hess@hess-experiment.eu
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); Alexander von Humboldt FoundationAlexander von Humboldt Foundation; Deutsche ForschungsgemeinschaftGerman Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; U.K. Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish National Science Centre; South African Department of Science and Technology; National Research Foundation; University of Namibia; National Commission on Research, Science & Technology of Namibia (NCRST); Innsbruck University; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Austrian Federal Ministry for Science, Research and Economy; University of Adelaide; Australian Research CouncilAustralian Research Council; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; University of Amsterdam
2022-01-07T10:20:17+00:00
sword
importub
filename=package.tar
7654d6f0f813f5185fea829229f84dd1
false
true
Hassan E. Abdalla
H. E. S. S. Collaboration
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Armand
M. Arrieta
M. Backes
A. Balzer
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
N. Chakraborty
R. C. G. Chaves
A. Chen
J. Chevalier
S. Colafrancesco
B. Condon
J. Conrad
I. D. Davids
J. Decock
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Donath
J. Dyks
T. Edwards
Kathrin Egberts
G. Emery
J. -P. Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. V. Fernandes
A. Fiasson
G. Fontaine
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
T. Garrigoux
F. Gate
G. Giavitto
D. Glawion
J. F. Glicenstein
D. Gottschall
M. -H. Grondin
J. Hahn
M. Haupt
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
J. A. Hinton
W. Hofmann
Clemens Hoischen
T. L. Holch
M. Holler
D. Horns
A. Ivascenko
H. Iwasaki
A. Jacholkowska
M. Jamrozy
D. Jankowsky
F. Jankowsky
M. Jingo
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
J. King
S. Klepser
D. Klochkov
W. Kluzniak
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
P. P. Kruger
H. Laffon
G. Lamanna
J. Lau
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Liu
R. Lopez-Coto
I. Lypova
D. Malyshev
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
K. Mora
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
N. W. Pekeur
G. Pelletier
C. Perennes
P. -O. Petrucci
B. Peyaud
Q. Piel
S. Pita
V. Poireau
D. A. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
S. Saito
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
A. S. Seyffert
N. Shafi
I. Shilon
K. Shiningayamwe
R. Simoni
H. Sol
F. Spanier
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
I. Sushch
T. Takahashi
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
J. Zorn
N. Zywucka
eng
uncontrolled
gamma rays: stars
eng
uncontrolled
binaries: general
eng
uncontrolled
stars: massive
Physik
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
53103
2018
2018
eng
8
612
article
EDP Sciences
Les Ulis
HESS Collaboratio MAGIC Collaboration
1
2018-04-09
2018-04-09
--
Constraints on particle acceleration in SS433/W50 from MAGIC and HESS observations
Context. The large jet kinetic power and non-thermal processes occurring in the microquasar SS 433 make this source a good candidate for a very high-energy (VHE) gamma-ray emitter. Gamma-ray fluxes above the sensitivity limits of current Cherenkov telescopes have been predicted for both the central X-ray binary system and the interaction regions of SS 433 jets with the surrounding W50 nebula. Non-thermal emission at lower energies has been previously reported, indicating that efficient particle acceleration is taking place in the system. Aims. We explore the capability of SS 433 to emit VHE gamma rays during periods in which the expected flux attenuation due to periodic eclipses (P-orb similar to 13.1 days) and precession of the circumstellar disk (P-pre similar to 162 days) periodically covering the central binary system is expected to be at its minimum. The eastern and western SS 433/W50 interaction regions are also examined using the whole data set available. We aim to constrain some theoretical models previously developed for this system with our observations. Methods. We made use of dedicated observations from the Major Atmospheric Gamma Imaging Cherenkov telescopes (MAGIC) and High Energy Spectroscopic System (H.E.S.S.) of SS 433 taken from 2006 to 2011. These observation were combined for the first time and accounted for a total effective observation time of 16.5 h, which were scheduled considering the expected phases of minimum absorption of the putative VHE emission. Gamma-ray attenuation does not affect the jet/medium interaction regions. In this case, the analysis of a larger data set amounting to similar to 40-80 h, depending on the region, was employed. Results. No evidence of VHE gamma-ray emission either from the central binary system or from the eastern/western interaction regions was found. Upper limits were computed for the combined data set. Differential fluxes from the central system are found to be less than or similar to 10(-12)-10(-13) TeV-1 cm(-2) s(-1) in an energy interval ranging from similar to few x 100 GeV to similar to few TeV. Integral flux limits down to similar to 10(-12)-10(-13) ph cm(-2) s(-1) and similar to 10(-13)-10(-14) ph cm(-2) s(-1) are obtained at 300 and 800 GeV, respectively. Our results are used to place constraints on the particle acceleration fraction at the inner jet regions and on the physics of the jet/medium interactions. Conclusions. Our findings suggest that the fraction of the jet kinetic power that is transferred to relativistic protons must be relatively small in SS 433, q(p) <= 2.5 x 10(-5), to explain the lack of TeV and neutrino emission from the central system. At the SS 433/W50 interface, the presence of magnetic fields greater than or similar to 10 mu G is derived assuming a synchrotron origin for the observed X-ray emission. This also implies the presence of high-energy electrons with E-e up to 50 TeV, preventing an efficient production of gamma-ray fluxes in these interaction regions.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201731169
1432-0746
wos:2018
A14
WOS:000429404700014
Ahnen, ML (reprint author), Swiss Fed Inst Technol, CH-8093 Zurich, Switzerland.
German B.M.B.F.Federal Ministry of Education & Research (BMBF); German M.P.G.; Italian INFNIstituto Nazionale di Fisica Nucleare; Italian INAFIstituto Nazionale Astrofisica; Swiss National Fund SNFSwiss National Science Foundation (SNSF); ERDF under the Spanish MINECO [FPA2015-69818-P, FPA2012-36668, FPA2015-68378-P, FPA2015-69210-C6-2-R, FPA2015-69210-C6-4-R, FPA2015-69210C6-6-R, AYA2015-71042-P, AYA2016-76012-C3-1-P, ESP2015-71662-C2-2-P, CSD2009-00064]; Japanese JSPSMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; Japanese MEXTMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Spanish Centro de Excelencia "Severo Ochoa" [SEV-2012-0234, SEV-2015-0548]; Unidad de Excelencia "Maria de Maeztu" [MDM-2014-0369]; Croatian Science Foundation (HrZZ) Project [09/176]; University of Rijeka Project [13.12.1.3.02]; DFG Collaborative Research CentersGerman Research Foundation (DFG) [SFB823/C4, SFB876/C3]; Polish MNiSzW grant [745/N-HESS-MAGIC/2010/0]; German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; UK Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish Ministry of Science and Higher EducationMinistry of Science and Higher Education, Poland; South African Department of Science and Technology; National Research Foundation; University of Namibia
2021-12-13T12:24:29+00:00
sword
importub
filename=package.tar
31f97de46cda63514417e99b457ff812
false
true
M. L. Ahnen
S. Ansoldi
L. A. Antonelli
C. Arcaro
A. Babie
B. Banerjee
P. Bangale
U. Barres de Almeida
J. A. Barrio
J. Becerra Gonzalez
W. Bednarek
E. Bernardini
A. Berti
B. Biasuzzi
A. Biland
O. Blanch
S. Bonnefoy
G. Bonnoli
F. Borracci
R. Carosi
A. Carosi
A. Chatterjee
P. Colin
E. Colombo
J. L. Contreras
J. Cortina
S. Covino
P. Cumani
P. Da Vela
F. Dazzi
A. De Angelis
B. De Lotto
E. de Ona Wilhelmi
F. Di Pierro
M. Doert
A. Dominguez
D. Dominis Prester
D. Dorner
M. Doro
S. Einecke
D. Eisenacher Glawion
D. Elsaesser
M. Engelkemeier
V. Fallah Ramazani
A. Fernandez-Barra
D. Fidalgo
M. V. Fonseca
L. Font
C. Fruck
D. Galindo
R. J. Garcia Lopez
M. Garczarczyk
M. Gaug
P. Giammaria
N. Godinovie
D. Gora
S. Griffiths
D. Guberman
D. Hadasch
A. Hahn
T. Hassan
M. Hayashida
J. Herrera
J. Hose
D. Hrupec
G. Hughes
K. Ishio
Y. Konno
H. Kubo
J. Kushida
D. Kuvezdie
D. Lelas
E. Lindfors
S. Lombardi
F. Longo
M. Lopez
A. Lopez-Oramas
P. Majumdar
M. Makariev
G. Maneva
M. Manganaro
K. Mannheim
L. Maraschi
M. Mariotti
M. Martinez
D. Mazin
U. Menzel
M. Minev
R. Mirzoyan
A. Moralejo
V. Moreno
E. Moretti
P. Munar-Adrover
V. Neustroev
A. Niedzwiecki
M. Nievas Rosillo
K. Nilsson
K. Nishijima
K. Noda
L. Nogues
S. Paiano
J. Palacio
D. Paneque
R. Paoletti
J. M. Paredes
X. Paredes-Fortuny
G. Pedaletti
M. Peresano
L. Perri
M. Persic
P. G. Prada Moroni
E. Prandini
I. Puljak
J. R. Garcia
I. Reichardt
W. Rhode
M. Riti
J. Rico
T. Saito
K. Satalecka
S. Schroeder
T. Schweizer
S. N. Shore
A. Sillanpaa
J. Sitarek
D. Sobczynskall
A. Stamerra
M. Strzys
T. Surie
L. Takalo
F. Tavecchio
P. Temnikov
T. Terzie
D. Tescaro
M. Teshima
D. F. Torres
N. Torres-Alla
A. Treves
G. Vanzo
M. Vazquez Acosta
I. Vovk
J. E. Ward
M. Will
M. H. Wu
D. Zarie
Hassan E. Abdalla
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
A. G. Akhperjanian
T. Andersson
Ekrem Oǧuzhan Angüner
M. Arakawa
M. Arrieta
P. Aubert
M. Backes
A. Balzer
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernlohr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Btichele
T. Bulik
M. Capasso
J. Carr
Sabrina Casanova
M. Cerruti
N. Chakraborty
R. Chalme-Calvet
R. C. G. Chaves
A. Chen
J. Chevalier
M. Chretien
M. Coffaro
S. Colafrancesco
G. Cologna
B. Condon
J. Conrad
Y. Cui
I. D. Davids
J. Decock
B. Degrange
C. Dei
J. Devin
P. Dewilt
L. Dirson
A. Djannati-Atai
W. Domainko
A. Donath
K. Dutson
J. Dyks
T. Edwards
Kathrin Egberts
P. Eger
J. -P. Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. V. Fernandes
A. Fiasson
G. Fontaine
A. Forster
S. Funk
M. Ftifiling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschal
A. Goya
M. -H. Grondin
J. Hahn
M. Haupt
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
J. A. Hinton
W. Hofmann
Clemens Hoischen
M. Holler
D. Horns
A. Ivascenko
H. Iwasaki
A. Jacholkowska
M. Jamrozy
M. Janiak
D. Jankowsky
F. Jankowsky
M. Jingo
T. Jogler
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzyfiski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
M. Kieffer
J. King
S. Klepser
D. Klochkov
W. Kluiniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
P. P. Krtiger
H. Laffon
G. Lamanna
J. Lau
J. -P. Lees
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Liu
R. Lopez-Coto
I. Lypova
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitche
R. Moderski
M. Mohamed
L. Mohrmann
K. Mora
E. Moulin
T. Murach
S. Nakashima
M. De Naurois
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ott
S. Ohm
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
N. W. Pekeur
G. Pelletier
C. Perennes
P. -O. Petrucci
B. Peyaud
Q. Pie
S. Pita
H. Poon
D. Prokhorov
H. Prokoph
G. Ptffilhofer
M. Punch
A. Quirrenbach
S. Raab
A. Reimer
O. Reimer
M. Renaud
R. De Los Reyes
S. Richter
F. Rieger
C. Romoli
G. Rowell
B. Rudak
C. B. Rulten
S. Safi-Harb
V. Sahakian
S. Saito
D. Salek
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schtissler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Settimo
A. S. Seyffert
N. Shafi
I. Shilon
R. Simoni
H. So
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
K. Stycz
I. Sushch
T. Takahashi
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. Van der Walt
C. Van Eldik
C. Van Rensburg
B. Van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Vok
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Wornlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
N. Zywuckan
eng
uncontrolled
gamma rays: general
eng
uncontrolled
stars: black holes
eng
uncontrolled
X-rays: binaries
eng
uncontrolled
ISM: jets and outflows
Astronomie und zugeordnete Wissenschaften
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
53090
2018
2018
eng
10
612
article
EDP Sciences
Les Ulis
H E S S Collaboration H E S S Collaboration Fermi-LAT Collaboration
1
2018-04-09
2018-04-09
--
The supernova remnant W49B as seen with HESS and Fermi-LAT
The supernova remnant (SNR) W49B originated from a core-collapse supernova that occurred between one and four thousand years ago, and subsequently evolved into a mixed-morphology remnant, which is interacting with molecular clouds (MC). Gamma-ray observations of SNR-MC associations are a powerful tool to constrain the origin of Galactic cosmic rays, as they can probe the acceleration of hadrons through their interaction with the surrounding medium and subsequent emission of non-thermal photons. We report the detection of a gamma-ray source coincident with W49B at very high energies (VHE; E > 100 GeV) with the H.E.S.S. Cherenkov telescopes together with a study of the source with five years of Fermi-LAT high-energy gamma-ray (0.06-300 GeV) data. The smoothly connected, combined source spectrum, measured from 60 MeV to multi-TeV energies, shows two significant spectral breaks at 304 +/- 20 MeV and 8.4(-2.5)(+2.5) GeV; the latter is constrained by the joint fit from the two instruments. The detected spectral features are similar to those observed in several other SNR-MC associations and are found to be indicative of gamma-ray emission produced through neutral-pion decay.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201527843
1432-0746
wos:2018
A5
WOS:000429404700005
Marandon, V (reprint author), Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.; Brun, F; Lemoine-Goumard, M (reprint author), Univ Bordeaux, CNRS, IN2P3, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France.; Jogler, T (reprint author), Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany.; Jogler, T (reprint author), Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, HW Hansen Expt Phys Lab, Stanford, CA 94305 USA.; Jogler, T (reprint author), Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA.; Katsuta, J (reprint author), Hiroshima Univ, Dept Phys Sci, Higashihiroshima, Hiroshima 7398526, Japan.
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; UK Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish Ministry of Science and Higher EducationMinistry of Science and Higher Education, Poland; South African Department of Science and Technology; National Research Foundation; University of Namibia; Innsbruck University; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Austrian Federal Ministry for Science, Research and Economy; University of Adelaide; Australian Research CouncilAustralian Research Council; EGI Federation; National Aeronautics and Space AdministrationNational Aeronautics & Space Administration (NASA); Department of Energy in the United StatesUnited AtomiqueFrench Atomic Energy Commission; Centre National de la Recherche Scientifique/Institut National de Physique Nucleaire et de Physique des Particules in FranceCentre National de la Recherche Scientifique (CNRS); Agenzia Spaziale ItalianaItalian Space Agency; Istituto Nazionale di Fisica Nucleare in ItalyIstituto Nazionale di Fisica Nucleare; Ministry of Education, Culture, Sports, Science and Technology (MEXT)Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); High Energy Accelerator Research Organization (KEK)High Energy Accelerator Research Organization (KEK); Japan Aerospace Exploration Agency (JAXA) in Japan; K. A. Wallenberg FoundationKnut & Alice Wallenberg Foundation; Swedish Research CouncilSwedish Research Council; Swedish National Space Board in Sweden; Istituto Nazionale di Astrofisica in ItalyIstituto FoundationNational Science Foundation (NSF) [AST-9800334, AST-0098562, AST-0100793, AST-0228993, AST-0507657]
2021-12-10T10:34:09+00:00
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Hassan E. Abdalla
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
A. G. Akhperjanian
T. Andersson
O. Anguener
M. Arrieta
P. Aubert
M. Backes
A. Balzer
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
R. Blackwell
M. Boettcher
C. Boisson
J. Bolmont
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
T. Bulik
M. Capasso
J. Carr
Sabrina Casanova
M. Cerruti
N. Chakraborty
R. Chalme-Calvet
R. C. G. Chaves
A. Chen
J. Chevalier
M. Chretien
S. Colafrancesco
G. Cologna
B. Condon
J. Conrad
Y. Cui
I. D. Davids
J. Decock
B. Degrange
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
T. Edwards
Kathrin Egberts
P. Eger
J. -P. Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. V. Fernandes
A. Fiasson
G. Fontaine
A. Foerster
S. Funk
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
A. Goyal
M. -H. Grondin
D. Hadasch
J. Hahn
M. Haupt
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
J. A. Hinton
W. Hofmann
Clemens Hoischen
M. Holler
D. Horns
A. Ivascenko
A. Jacholkowska
M. Jamrozy
M. Janiak
D. Jankowsky
F. Jankowsky
M. Jingo
T. Jogler
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
U. Katz
D. Kerszberg
B. Khelifi
M. Kieffer
J. King
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lau
J. -P. Lees
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Liu
R. Lopez-Coto
I. Lypova
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
K. Mora
E. Moulin
T. Murach
M. de Naurois
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Oettl
S. Ohm
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
N. W. Pekeur
G. Pelletier
C. Perennes
P. -O. Petrucci
B. Peyaud
Q. Piel
S. Pita
H. Poon
D. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwemmer
M. Settimo
A. S. Seyffert
N. Shafi
I. Shilon
R. Simoni
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
I. Sushch
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
N. Zywucka
J. Katsuta
eng
uncontrolled
gamma rays: general
eng
uncontrolled
ISM: supernova remnants
eng
uncontrolled
ISM: clouds
Physik
Institut für Physik und Astronomie
Import
53099
2018
2018
eng
61
612
article
EDP Sciences
Les Ulis
H E S S Collaboration
1
2018-04-09
2018-04-09
--
The HESS Galactic plane survey
We present the results of the most comprehensive survey of the Galactic plane in very high-energy (VHE) gamma-rays, including a public release of Galactic sky maps, a catalog of VHE sources, and the discovery of 16 new sources of VHE gamma-rays. The High Energy Spectroscopic System (H.E.S.S.) Galactic plane survey (HGPS) was a decade-long observation program carried out by the H.E.S.S. I array of Cherenkov telescopes in Namibia from 2004 to 2013. The observations amount to nearly 2700 h of quality-selected data, covering the Galactic plane at longitudes from l = 250 degrees to 65 degrees and latitudes vertical bar b vertical bar <= 3 degrees. In addition to the unprecedented spatial coverage, the HGPS also features a relatively high angular resolution (0.08 degrees approximate to 5 arcmin mean point spread function 68% containment radius), sensitivity (less than or similar to 1.5% Crab flux for point-like sources), and energy range (0.2-100 TeV). We constructed a catalog of VHE gamma-ray sources from the HGPS data set with a systematic procedure for both source detection and characterization of morphology and spectrum. We present this likelihood-based method in detail, including the introduction of a model component to account for unresolved, large-scale emission along the Galactic plane. In total, the resulting HGPS catalog contains 78 VHE sources, of which 14 are not reanalyzed here, for example, due to their complex morphology, namely shell-like sources and the Galactic center region. Where possible, we provide a firm identification of the VHE source or plausible associations with sources in other astronomical catalogs. We also studied the characteristics of the VHE sources with source parameter distributions. 16 new sources were previously unknown or unpublished, and we individually discuss their identifications or possible associations. We firmly identified 31 sources as pulsar wind nebulae (PWNe), supernova remnants (SNRs), composite SNRs, or gamma-ray binaries. Among the 47 sources not yet identified, most of them (36) have possible associations with cataloged objects, notably PWNe and energetic pulsars that could power VHE PWNe.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201732098
1432-0746
wos:2018
A1
WOS:000429404700001
Deil, C; Donath, A; Marandon, V (reprint author), Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.; Chaves, RCG (reprint author), Univ Montpellier, CNRS, IN2P3, Lab Univers & Particules Montpellier, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France.; Brun, F (reprint author), Univ Bordeaux, CNRS, IN2P3, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France.
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; U.K. Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish Ministry of Science and Higher EducationMinistry of Science and Higher Education, Poland; South African Department of Science and Technology; National Research Foundation; University of Namibia; Innsbruck University; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Austrian Federal Ministry for Science, Research and Economy; University of Adelaide; Australian Research CouncilAustralian Research Council; EGI Federation
2021-12-13T11:42:59+00:00
sword
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filename=package.tar
325a6fb163f2b47e368e1e43a6d85c4d
false
true
Hassan E. Abdalla
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
E. O. Anguener
M. Arakawa
M. Arrieta
P. Aubert
M. Backes
A. Balzer
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
R. Blackwell
M. Boettcher
C. Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
M. Capasso
S. Carrigan
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
N. Chakraborty
R. C. G. Chaves
A. Chen
J. Chevalier
S. Colafrancesco
B. Condon
J. Conrad
I. D. Davids
J. Decock
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
W. Domainko
A. Donath
K. Dutson
J. Dyks
T. Edwards
Kathrin Egberts
P. Eger
G. Emery
J. -P. Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. V. Fernandes
A. Fiasson
G. Fontaine
A. Foerster
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
T. Garrigoux
H. Gast
F. Gate
G. Giavitto
B. Giebels
D. Glawion
J. F. Glicenstein
D. Gottschall
M. -H. Grondin
J. Hahn
M. Haupt
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
J. A. Hinton
W. Hofmann
Clemens Hoischen
T. L. Holch
M. Holler
D. Horns
A. Ivascenko
H. Iwasaki
A. Jacholkowska
M. Jamrozy
D. Jankowsky
F. Jankowsky
M. Jingo
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
J. King
S. Klepser
D. Klochkov
W. Kluzniak
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
P. P. Krueger
H. Laffon
G. Lamanna
J. Lau
J. -P. Lees
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Liu
R. Lopez-Coto
I. Lypova
V. Marandon
D. Malyshev
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
K. Mora
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
C. Perennes
P. -O. Petrucci
B. Peyaud
Q. Piel
S. Pita
V. Poireau
H. Poon
D. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
C. B. Rulten
S. Safi-Harb
V. Sahakian
S. Saito
D. A. Sanchez
A. Santangelo
M. Sasaki
M. Schandri
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Settimo
A. S. Seyffert
N. Shafi
I. Shilon
K. Shiningayamwe
R. Simoni
H. Sol
F. Spanier
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
I. Sushch
T. Takahashi
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
J. Zorn
N. Zywucka
eng
uncontrolled
gamma rays: general
eng
uncontrolled
surveys
eng
uncontrolled
Galaxy: general
Physik
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
53091
2018
2018
eng
14
612
article
EDP Sciences
Les Ulis
H E S S Collaboration
1
2018-04-09
2018-04-09
--
Deeper HESS observations of Vela Junior (RX J0852.0-4622)
Aims. We study gamma-ray emission from the shell-type supernova remnant (SNR) RXJ0852.0-4622 to better characterize its spectral properties and its distribution over the SNR. Methods. The analysis of an extended High Energy Spectroscopic System (H.E.S.S.) data set at very high energies (E > 100 GeV) permits detailed studies, as well as spatially resolved spectroscopy, of the morphology and spectrum of the whole RXJ0852.0-4622 region. The H.E.S.S. data are combined with archival data from other wavebands and interpreted in the framework of leptonic and hadronic models. The joint Fermi-LAT-H.E.S.S. spectrum allows the direct determination of the spectral characteristics of the parent particle population in leptonic and hadronic scenarios using only GeV-TeV data. Results. An updated analysis of the H.E.S.S. data shows that the spectrum of the entire SNR connects smoothly to the high-energy spectrum measured by Fermi-LAT. The increased data set makes it possible to demonstrate that the H.E.S.S. spectrum deviates significantly from a power law and is well described by both a curved power law and a power law with an exponential cutoff at an energy of E-cut = (6.7 +/- 1.2(stat) +/- 1.2(syst)) TeV. The joint Fermi-LAT-H.E.S.S. spectrum allows the unambiguous identification of the spectral shape as a power law with an exponential cutoff. No significant evidence is found for a variation of the spectral parameters across the SNR, suggesting similar conditions of particle acceleration across the remnant. A simple modeling using one particle population to model the SNR emission demonstrates that both leptonic and hadronic emission scenarios remain plausible. It is also shown that at least a part of the shell emission is likely due to the presence of a pulsar wind nebula around PSR J0855-4644.
Astronomy and astrophysics : an international weekly journal
Morphology studies and resolved spectroscopy
10.1051/0004-6361/201630002
1432-0746
wos:2018
A7
WOS:000429404700007
Sushch, I (reprint author), North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa.; Arribas, MP; Schwanke, U (reprint author), Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany.; Komin, N (reprint author), Univ Witwatersrand, Sch Phys, 1 Jan Smuts Ave, ZA-2050 Johannesburg, South Africa.
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; U.K. Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish Ministry of Science and Higher EducationMinistry of Science and Higher Education, Poland; South African Department of Science and Technology; National Research Foundation; University of Namibia; Innsbruck University; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Austrian Federal Ministry for Science, Research and Economy; University of Adelaide; Australian Research CouncilAustralian Research Council; EGI Federation
2021-12-10T11:08:58+00:00
sword
importub
filename=package.tar
c200e6814d51f4f2ba0b91110a50acd0
Sushch, I.
Schwanke, U.
Komin, N.
Arribas, M. Paz
false
true
Hassan E. Abdalla
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
A. G. Akhperjanian
T. Andersson
E. O. Anguener
M. Arakawa
M. Arrieta
P. Aubert
M. Backes
A. Balzer
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
R. Blackwell
M. Boettcher
C. Boisson
J. Bolmont
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Bilchele
T. Bulik
M. Capasso
J. Carr
Sabrina Casanova
M. Cerruti
N. Chakraborty
R. Chalme-Calvet
R. C. G. Chaves
A. Chen
J. Chevalier
M. Chretien
M. Coffaro
S. Colafrancesco
G. Cologna
B. Condon
J. Conrad
Y. Cui
I. D. Davids
J. Decock
B. Degrange
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
W. Domainko
A. Donath
K. Dutson
J. Dyks
T. Edwards
Kathrin Egberts
P. Eger
J. -P. Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. V. Fernandes
A. Fiasson
G. Fontaine
A. Foerster
S. Funk
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
A. Goya
M. -H. Grondin
J. Hahn
M. Haupt
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
J. A. Hinton
W. Hofmann
Clemens Hoischen
M. Holler
D. Horns
A. Ivascenko
H. Iwasaki
A. Jacholkowska
M. Jamrozy
M. Janiak
D. Jankowsky
F. Jankowsky
M. Jingo
T. Jogler
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
M. Kieffer
J. King
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
P. P. Krueger
H. Laffon
G. Lamanna
J. Lau
J. -P. Lees
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Liu
R. Lopez-Coto
I. Lypova
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitche
R. Moderski
M. Mohamed
L. Mohrmann
K. Mora
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Oettl
S. Ohm
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
C. Perennes
P. -O. Petrucci
B. Peyaud
Q. Piel
S. Pita
H. Poon
D. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
S. Richter
F. Rieger
C. Romoli
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
S. Saito
D. Salek
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Settimo
A. S. Seyffert
N. Shafi
I. Shilon
R. Simoni
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
K. Stycz
I. Sushch
T. Takahashi
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
N. Zywucka
eng
uncontrolled
astroparticle physics
eng
uncontrolled
gamma rays: general
eng
uncontrolled
acceleration of particles
eng
uncontrolled
cosmic rays
eng
uncontrolled
ISM: supernova remnants
Astronomie und zugeordnete Wissenschaften
Physik
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
53101
2018
2018
eng
25
612
article
EDP Sciences
Les Ulis
H E S S Collaboration
1
2018-04-09
2018-04-09
--
The population of TeV pulsar wind nebulae in the HESS Galactic Plane Survey
The nine-year H.E.S.S. Galactic Plane Survey (HGPS) has yielded the most uniform observation scan of the inner Milky Way in the TeV gamma-ray band to date. The sky maps and source catalogue of the HGPS allow for a systematic study of the population of TeV pulsar wind nebulae found throughout the last decade. To investigate the nature and evolution of pulsar wind nebulae, for the first time we also present several upper limits for regions around pulsars without a detected TeV wind nebula. Our data exhibit a correlation of TeV surface brightness with pulsar spindown power (E) over dot. This seems to be caused both by an increase of extension with decreasing (E) over dot, and hence with time, compatible with a power law R-PWN((E) over dot) similar to(E) over dot(0.65 +/- 0.20), and by a mild decrease of TeV gamma-ray luminosity with decreasing (E) over dot, compatible with L-1 (10 TeV) similar to (E) over dot(0.59 +/- 0.21). We also find that the off sets of pulsars with respect to the wind nebula centre with ages around 10 kyr are frequently larger than can be plausibly explained by pulsar proper motion and could be due to an asymmetric environment. In the present data, it seems that a large pulsar off set is correlated with a high apparent TeV efficiency L1- 10 TeV / (E) over dot. In addition to 14 HGPS sources considered firmly identified pulsar wind nebulae and 5 additional pulsar wind nebulae taken from literature, we find 10 HGPS sources that are likely TeV pulsar wind nebula candidates. Using a model that subsumes the present common understanding of the very high-energy radiative evolution of pulsar wind nebulae, we find that the trends and variations of the TeV observables and limits can be reproduced to a good level, drawing a consistent picture of present-day TeV data and theory.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201629377
1432-0746
wos:2018
A2
WOS:000429404700002
Mayer, M (reprint author), Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany.; Gallant, YA (reprint author), Univ Montpellier, CNRS, IN2P3, Lab Univers & Particules Montpellier, CC 72,Pl Eugene Bataillon, F-34095 Montpellier 5, France.; Valerius, K (reprint author), Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany.; Klepser, S (reprint author), DESY, D-15738 Zeuthen, Germany.; Valerius, K (reprint author), Karlsruhe Inst Technol, Inst Nucl Phys, POB 3640, D-76021 Karlsruhe, Germany.
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; U.K. Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish Ministry of Science and Higher EducationMinistry of Science and Higher Education, Poland; South African Department of Science and Technology; National Research Foundation; University of Namibia; Innsbruck University; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Austrian Federal Ministry for Science, Research and Economy; University of Adelaide; Australian Research CouncilAustralian Research Council; EGI Federation
2021-12-13T12:00:43+00:00
sword
importub
filename=package.tar
b86c105e23e3b7a8eb9721a2d7205272
false
true
Hassan E. Abdalla
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
A. G. Akhperjanian
T. Andersson
E. O. Anguener
M. Arrieta
P. Aubert
M. Backes
A. Balzer
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
R. Blackwell
M. Boettcher
C. Boisson
J. Bolmont
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
T. Bulik
M. Capasso
J. Carr
S. Carrigan
Sabrina Casanova
M. Cerruti
N. Chakraborty
R. Chalme-Calvet
R. C. G. Chaves
A. Chen
J. Chevalier
M. Chretien
S. Colafrancesco
G. Cologna
B. Condon
J. Conrad
C. Couturier
Y. Cui
I. D. Davids
B. Degrange
C. Deil
J. Devin
P. dewilt
L. Dirson
A. Djannati-Atai
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
T. Edwards
Kathrin Egberts
P. Eger
J. -P. Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. V. Fernandes
A. Fiasson
G. Fontaine
A. Foerster
S. Funk
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
A. Goyal
M. -H. Grondin
D. Hadasch
J. Hahn
M. Haupt
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
J. A. Hinton
W. Hofmann
Clemens Hoischen
M. Holler
D. Horns
A. Ivascenko
A. Jacholkowska
M. Jamrozy
M. Janiak
D. Jankowsky
F. Jankowsky
M. Jingo
T. Jogler
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
U. Katz
D. Kerszberg
B. Khelifi
M. Kieffer
J. King
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lau
J. -P. Lees
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Liu
R. Lopez-Coto
I. Lypova
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
K. Mora
E. Moulin
T. Murach
M. de Naurois
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Oettl
S. Ohm
E. de Ona Wilhelmi
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
C. Perennes
P. -O. Petrucci
B. Peyaud
S. Pita
H. Poon
D. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwemmer
M. Settimo
A. S. Seyffert
N. Shafi
I. Shilon
R. Simoni
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
I. Sushch
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
R. Tuffs
Y. Uchiyama
K. Valerius
D. J. van der Walt
C. van Eldik
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
N. Zywucka
eng
uncontrolled
gamma rays: general
eng
uncontrolled
catalogs
eng
uncontrolled
surveys
eng
uncontrolled
ISM: supernova remnants
eng
uncontrolled
pulsars: general
Physik
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
53089
2018
2018
eng
13
612
article
EDP Sciences
Les Ulis
H E S S Collaboration
1
2018-04-09
2018-04-09
--
Characterising the VHE diffuse emission in the central 200 parsecs of our Galaxy with HESS
The diffuse very high-energy (VHE; > 100 GeV) gamma-ray emission observed in the central 200 pc of the Milky Way by H.E.S.S. was found to follow dense matter distribution in the central molecular zone (CMZ) up to a longitudinal distance of about 130 pc to the Galactic centre (GC), where the flux rapidly decreases. This was initially interpreted as the result of a burst-like injection of energetic particles 104 yr ago, but a recent more sensitive H.E.S.S. analysis revealed that the cosmic-ray (CR) density profile drops with the distance to the centre, making data compatible with a steady cosmic PeVatron at the GC. In this paper, we extend this analysis to obtain, for the first time, a detailed characterisation of the correlation with matter and to search for additional features and individual gamma-ray sources in the inner 200 pc. Taking advantage of 250 h of H.E.S.S. data and improved analysis techniques, we perform a detailed morphology study of the diffuse VHE emission observed from the GC ridge and reconstruct its total spectrum. To test the various contributions to the total gamma-ray emission, we used an iterative 2D maximum-likelihood approach that allows us to build a phenomenological model of the emission by summing a number of different spatial components. We show that the emission correlated with dense matter covers the full CMZ and that its flux is about half the total diffuse emission flux. We also detect some emission at higher latitude that is likely produced by hadronic collisions of CRs in less dense regions of the GC interstellar medium. We detect an additional emission component centred on the GC and extending over about 15 pc that is consistent with the existence of a strong CR density gradient and confirms the presence of a CR accelerator at the very centre of our Galaxy. We show that the spectrum of full ridge diffuse emission is compatible with that previously derived from the central regions, suggesting that a single population of particles fills the entire CMZ. Finally, we report the discovery of a VHE gamma-ray source near the GC radio arc and argue that it is produced by the pulsar wind nebula candidate G0.13-0.11.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201730824
1432-0746
wos:2018
A9
WOS:000429404700009
Lemiere, A (reprint author), Univ Paris Diderot, CNRS, IN2P3, CEA Irfu,Observ Paris,Sorbonne Paris Cite,APC,Ast, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France.
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; UK Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish Ministry of Science and Higher EducationMinistry of Science and Higher Education, Poland; South African Department of Science and Technology; National Research Foundation; University of Namibia; Innsbruck University; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Austrian Federal Ministry for Science, Research and Economy; University of Adelaide; Australian Research CouncilAustralian Research Council; EGI Federation
2021-12-10T09:56:10+00:00
sword
importub
filename=package.tar
f091c56b8051ffb115b5f09f7d376b04
false
true
Hassan E. Abdalla
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
A. G. Akhperjanian
T. Andersson
E. O. Anguener
M. Arakawa
M. Arrieta
P. Aubert
M. Backes
A. Balzer
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
R. Blackwell
M. Boettcher
C. Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
M. Capasso
J. Carr
Sabrina Casanova
M. Cerruti
N. Chakraborty
R. C. G. Chaves
A. Chen
J. Chevalier
M. Coffaro
S. Colafrancesco
G. Cologna
B. Condon
J. Conrad
Y. Cui
I. D. Davids
J. Decock
B. Degrange
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
W. Domainko
A. Donath
K. Dutson
J. Dyks
T. Edwards
Kathrin Egberts
P. Eger
J. -P. Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. V. Fernandes
A. Fiasson
G. Fontaine
A. Foerster
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
A. Goyal
M. -H. Grondin
J. Hahn
M. Haupt
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
J. A. Hinton
W. Hofmann
Clemens Hoischen
T. L. Holch
M. Holler
D. Horns
A. Ivascenko
H. Iwasaki
A. Jacholkowska
M. Jamrozy
M. Janiak
D. Jankowsky
F. Jankowsky
M. Jingo
T. Jogler
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
J. King
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
P. P. Krueger
H. Laffon
G. Lamanna
J. Lau
J. -P. Lees
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Liu
R. Lopez-Coto
I. Lypova
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
K. Mora
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
N. W. Pekeur
G. Pelletier
C. Perennes
P. -O. Petrucci
B. Peyaud
Q. Piel
S. Pita
H. Poon
D. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
S. Richter
F. Rieger
C. Romoli
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
S. Saito
D. Salek
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Settimo
A. S. Seyffert
N. Shafi
I. Shilon
R. Simoni
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
K. Stycz
I. Sushch
T. Takahashi
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venters
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
N. Zywucka
eng
uncontrolled
gamma rays: general
eng
uncontrolled
gamma rays: ISM
eng
uncontrolled
Galaxy: center
eng
uncontrolled
cosmic rays
Physik
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
53102
2018
2018
eng
7
612
article
EDP Sciences
Les Ulis
H E S S Collaboration
1
2018-04-09
2018-04-09
--
Detailed spectral and morphological analysis of the shell type supernova remnant RCW 86
Aims. We aim for an understanding of the morphological and spectral properties of the supernova remnant RCW 86 and for insights into the production mechanism leading to the RCW 86 very high-energy gamma-ray emission. Methods. We analyzed High Energy Spectroscopic System (H.E.S.S.) data that had increased sensitivity compared to the observations presented in the RCW 86 H.E.S.S. discovery publication. Studies of the morphological correlation between the 0.5-1 keV X-ray band, the 2-5 keV X-ray band, radio, and gamma-ray emissions have been performed as well as broadband modeling of the spectral energy distribution with two different emission models. Results. We present the first conclusive evidence that the TeV gamma-ray emission region is shell-like based on our morphological studies. The comparison with 2-5 keV X-ray data reveals a correlation with the 0.4-50 TeV gamma-ray emission. The spectrum of RCW 86 is best described by a power law with an exponential cutoff at E-cut = (3.5 +/- 1.2(stat)) TeV and a spectral index of Gamma approximate to 1.6 +/- 0.2. A static leptonic one-zone model adequately describes the measured spectral energy distribution of RCW 86, with the resultant total kinetic energy of the electrons above 1 GeV being equivalent to similar to 0.1% of the initial kinetic energy of a Type Ia supernova explosion (10(51) erg). When using a hadronic model, a magnetic field of B approximate to 100 mu G is needed to represent the measured data. Although this is comparable to formerly published estimates, a standard E-2 spectrum for the proton distribution cannot describe the gamma-ray data. Instead, a spectral index of Gamma(p) approximate to 1.7 would be required, which implies that similar to 7 x 10(49)/n(cm-3) erg has been transferred into high-energy protons with the effective density n(cm-3) = n/1 cm(-3). This is about 10% of the kinetic energy of a typical Type Ia supernova under the assumption of a density of 1 cm(-3).
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201526545
1432-0746
wos:2018
A4
WOS:000429404700004
Jung-Richardt, I (reprint author), Univ Erlangen Nurnberg, Phys Inst, Erwin Rommel Str 1, D-91058 Erlangen, Germany.
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; UK Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish Ministry of Science and Higher EducationMinistry of Science and Higher Education, Poland; South African Department of Science and Technology; National Research Foundation; University of Namibia; Australian Research CouncilAustralian Research Council; Science Foundation for Physics within The University of SydneyUniversity of Sydney
2021-12-13T12:08:21+00:00
sword
importub
filename=package.tar
c388a66b51dfe084b83f8c2d949574d7
false
true
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
A. G. Akhperjanian
E. O. Anguener
M. Backes
A. Balzer
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
E. Birsin
R. Blackwell
M. Boettcher
C. Boisson
J. Bolmont
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
T. Bulik
J. Carr
Sabrina Casanova
N. Chakraborty
R. Chalme-Calvet
R. C. G. Chaves
A. Chen
J. Chevalier
M. Chretien
S. Colafrancesco
G. Cologna
B. Condon
J. Conrad
C. Couturier
Y. Cui
I. D. Davids
B. Degrange
C. Deil
P. deWilt
A. Djannati-Atai
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
J. -P. Ernenwein
P. Espigat
C. Farnier
S. Fegan
F. Feinstein
M. V. Fernandes
D. Fernandez
A. Fiasson
G. Fontaine
A. Foerster
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
A. Goyal
M. -H. Grondin
M. Grudzinska
D. Hadasch
S. Haeffner
J. Hahn
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
J. A. Hinton
W. Hofmann
P. Hofverberg
Clemens Hoischen
M. Holler
D. Horns
A. Ivascenko
A. Jacholkowska
M. Jamrozy
M. Janiak
F. Jankowsky
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
U. Katz
D. Kerszberg
B. Khelifi
M. Kieffer
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lau
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
T. Lohse
A. Lopatin
M. Lorentz
C. -C. Lu
R. Lui
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
U. Menzler
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
K. Mora
E. Moulin
T. Murach
M. de Naurois
J. Niemiec
L. Oakes
H. Odaka
S. Oettl
S. Ohm
B. Opitz
M. Ostrowski
I. Oya
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
P. -O. Petrucci
B. Peyaud
S. Pita
H. Poon
D. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
I. Reichardt
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwemmer
A. S. Seyffert
R. Simoni
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
I. Sushch
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
M. Tluczykont
C. Trichard
R. Tuffs
K. Valerius
J. van der Walt
C. van Eldik
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
S. J. Wagner
P. Wagner
R. M. Wagner
M. Weidinger
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
F. Zefi
N. Zywucka
eng
uncontrolled
astroparticle physics
eng
uncontrolled
gamma rays: general
eng
uncontrolled
ISM: supernova remnants
eng
uncontrolled
cosmic rays
Physik
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
51948
2018
2018
eng
7
617
article
EDP Sciences
Les Ulis
HESS Collaboration
1
2018-09-20
--
--
The starburst galaxy NGC 253 revisited by HESS and Fermi-LAT
Context. NGC 253 is one of only two starburst galaxies found to emit gamma-rays from hundreds of MeV to multi-TeV energies. Accurate measurements of the very-high-energy (VHE; E> 100 GeV) and high-energy (HE; E > 60 MeV) spectra are crucial to study the underlying particle accelerators, probe the dominant emission mechanism(s) and to study cosmic-ray interaction and transport. Aims. The measurement of the VHE gamma-ray emission of NGC 253 published in 2012 by H.E.S.S. was limited by large systematic uncertainties. Here, the most up to date measurement of the gamma-ray spectrum of NGC 253 is investigated in both HE and VHE gamma-rays. Assuming a hadronic origin of the gamma-ray emission, the measurement uncertainties are propagated into the interpretation of the accelerated particle population. Methods. The data of H.E.S.S. observations are reanalysed using an updated calibration and analysis chain. The improved Fermi-LAT analysis employs more than 8 yr of data processed using pass 8. The cosmic-ray particle population is evaluated from the combined HE-VHE gamma-ray spectrum using NAIMA in the optically thin case. Results. The VHE gamma-ray energy spectrum is best fit by a power-law distribution with a flux normalisation of (1.34 +/- 0.14(stat) +/- 0.27(sys)) x 10(-13) cm(-2) s(-1) TeV-1 at 1 TeV - about 40% above, but compatible with the value obtained in Abramowski et al. (2012). The spectral index Gamma = 2.39 +/- 0.14(stat) +/- 0.25(sys) is slightly softer than but consistent with the previous measurement within systematic errors. In the Fermi energy range an integral flux of F(E > 60 MeV) = (1.56 +/- 0.28(stat) +/- 0.15(sys)) x 10(-8) cm(-2) s(-1) is obtained. At energies above similar to 3 GeV the HE spectrum is consistent with a power-law ranging into the VHE part of the spectrum measured by H.E.S.S. with an overall spectral index Gamma = 2.22 +/- 0.06(stat). Conclusions. Two scenarios for the starburst nucleus are tested, in which the gas in the starburst nucleus acts as either a thin or a thick target for hadronic cosmic rays accelerated by the individual sources in the nucleus. In these two models, the level to which NGC 253 acts as a calorimeter is estimated to a range of f(cal) = 0.1 to 1 while accounting for the measurement uncertainties. The presented spectrum is likely to remain the most accurate measurements until the Cherenkov Telescope Array (CTA) has collected a substantial set of data towards NGC 253.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201833202
1432-0746
wos:2018
A73
WOS:000445045400001
Volk, HJ; Yang, R (reprint author), Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.; Hoischen, C (reprint author), Univ Potsdam, Inst Phys Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany.; Taylor, AM (reprint author), DESY, D-15738 Zeuthen, Germany.
2021-09-27T08:24:55+00:00
sword
importub
filename=package.tar
c2811002361fc4b9750462ccc152ca69
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true
Hassan E. Abdalla
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Arcaro
C. Armand
M. Arrieta
M. Backes
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
T. Bylund
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
N. Chakraborty
S. Chandra
R. C. G. Chaves
A. Chen
S. Colafrancesco
B. Condon
I. D. Davids
C. Dei
J. Devin
P. dewilt
L. Dirson
A. Djannati-Atai
A. Dmytriiev
A. Donath
J. Dyks
Kathrin Egberts
G. Emery
J-P Ernenwein
S. Eschbach
S. Fegan
A. Fiasson
G. Fontaine
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
T. Garrigoux
F. Gate
G. Giavitto
D. Glawion
J. F. Glicenstein
D. Gottschall
M-H Grondin
J. Hahn
M. Haupt
G. Heinzelmann
G. Henri
G. Hermann
J. A. Hinton
W. Hofmann
Clemens Hoischen
T. L. Holch
M. Holler
D. Horns
D. Huber
H. Iwasaki
A. Jacholkowska
M. Jamrozy
D. Jankowsky
F. Jankowsky
L. Jouvin
I Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
J. King
S. Klepser
W. Kluzniak
Nu Komin
K. Kosack
S. Krakau
M. Kraus
P. P. Kruger
G. Lamanna
J. Lau
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J-P Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Lopez-Coto
I Lypova
D. Malyshev
V Marandon
A. Marcowith
C. Mariaud
G. Marti-Devesa
R. Marx
G. Maurin
P. J. Meintjes
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I Oya
M. Padovani
M. Panter
R. D. Parsons
C. Perennes
P-O Petrucci
B. Peyaud
Q. Piel
S. Pita
V Poireau
A. Priyana Noel
D. A. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowel
B. Rudak
E. Ruiz-Velasco
V Sahakian
S. Saito
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Senniappan
A. S. Seyffert
N. Shafi
I Shilon
K. Shiningayamwe
R. Simoni
A. Sinha
H. Sol
F. Spanier
A. Specovius
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
I Sushch
T. Takahashi
J-P Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
A. Woernlein
R. Yang
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
J. Zorn
N. Zywucka
eng
uncontrolled
astroparticle physics
eng
uncontrolled
galaxies: starburst
eng
uncontrolled
gamma rays: galaxies
Astronomie und zugeordnete Wissenschaften
Physik
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
53088
2018
2018
eng
25
612
article
EDP Sciences
Les Ulis
H E S S Collaboration
1
2018-04-09
2018-04-09
--
HESS observations of RX J1713.7-3946 with improved angular and spectral resolution
Astronomy and astrophysics : an international weekly journal
Evidence for gamma-ray emission extending beyond the X-ray emitting shell
10.1051/0004-6361/201629790
1432-0746
wos:2018
A6
WOS:000429404700006
Eger, P; Parsons, RD (reprint author), Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.; Berge, D (reprint author), Univ Amsterdam, Astron Inst Anton Pannekoek, GRAPPA, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands.; Berge, D (reprint author), Univ Amsterdam, Inst High Energy Phys, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands.
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; UK Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish Ministry of Science and Higher EducationMinistry of Science and Higher Education, Poland; South African Department of Science and Technology; National Research Foundation; University of Namibia; Innsbruck University; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Austrian Federal Ministry for Science, Research and Economy; University of Adelaide; Australian Research CouncilAustralian Research Council; National Aeronautics and Space AdministrationNational Aeronautics & Space Administration (NASA); Department of Energy in the United StatesUnited States Department of Commission; Centre National de la Recherche Scientifique/Institut National de Physique Nucleaire et de Physique des Particules in FranceCentre National de la Recherche Scientifique (CNRS); Agenzia Spaziale ItalianaItalian Space Agency; Istituto Nazionale di Fisica Nucleare in ItalyIstituto Nazionale di Fisica Nucleare; Ministry of Education, Culture, Sports, Science and Technology (MEXT)Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); High Energy Accelerator Research Organization (KEK)High Energy Accelerator Research Organization (KEK); Japan Aerospace Exploration Agency (JAXA) in Japan; K. A. Wallenberg FoundationKnut & Alice Wallenberg Foundation; Swedish Research CouncilSwedish Research Council; Swedish National Space Board in Sweden
2021-12-10T09:34:43+00:00
sword
importub
filename=package.tar
5318d680309184e054481829ffe2e65f
false
true
Hassan E. Abdalla
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
A. G. Akhperjanian
T. Andersson
E. O. Anguener
M. Arrieta
P. Aubert
M. Backes
A. Balzer
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
R. Blackwell
M. Boettcher
C. Boisson
J. Bolmont
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
T. Bulik
M. Capasso
J. Carr
Sabrina Casanova
M. Cerruti
N. Chakraborty
R. Chalme-Calvet
R. C. G. Chaves
A. Chen
J. Chevalier
M. Chretien
S. Colafrancesco
G. Cologna
B. Condon
J. Conrad
Y. Cui
I. D. Davids
J. Decock
B. Degrange
C. Dei
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
T. Edwards
Kathrin Egberts
P. Eger
J. -P. Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. V. Fernandes
A. Fiasson
G. Fontaine
A. Foerster
T. Fukuyama
S. Funk
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
A. Goyal
M. -H. Grondin
D. Hadasch
J. Hahn
M. Haupt
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
J. A. Hinton
W. Hofmann
Clemens Hoischen
M. Holler
D. Horns
A. Ivascenko
A. Jacholkowska
M. Jamrozy
M. Janiak
D. Jankowsky
F. Jankowsky
M. Jingo
T. Jogler
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
U. Katz
D. Kerszberg
B. Khelifi
M. Kieffer
J. King
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lau
J. -P. Lees
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Liu
R. Lopez-Coto
I. Lypova
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
K. Mora
E. Moulin
T. Murach
M. de Naurois
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Oettl
S. Ohm
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
N. W. Pekeur
G. Pelletier
C. Perennes
P. -O. Petrucci
B. Peyaud
Q. Piel
S. Pita
H. Poon
D. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwemmer
M. Settimo
A. S. Seyffert
N. Shafi
I. Shilon
R. Simoni
H. Sol
F. Spanie
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
I. Sushch
T. Takahashi
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Edik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
F. Volpe
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
N. Zywucka
eng
uncontrolled
acceleration of particles
eng
uncontrolled
cosmic rays
eng
uncontrolled
ISM: supernova remnants
eng
uncontrolled
gamma rays: general
eng
uncontrolled
astroparticle physic
Physik
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
46274
2017
2017
eng
11
606
article
EDP Sciences
Les Ulis
HESS Collaboration
1
--
--
--
Measurement of the EBL spectral energy distribution using the VHE gamma-ray spectra of HESS blazars
Very high-energy gamma rays (VHE, E greater than or similar to 100 GeV) propagating over cosmological distances can interact with the low-energy photons of the extragalactic background light (EBL) and produce electron-positron pairs. The transparency of the Universe to VHE gamma rays is then directly related to the spectral energy distribution (SED) of the EBL. The observation of features in the VHE energy spectra of extragalactic sources allows the EBL to be measured, which otherwise is very difficult. An EBL model-independent measurement of the EBL SED with the H.E.S.S. array of Cherenkov telescopes is presented. It was obtained by extracting the EBL absorption signal from the reanalysis of high-quality spectra of blazars. From H.E.S.S. data alone the EBL signature is detected at a significance of 9.5 sigma, and the intensity of the EBL obtained in different spectral bands is presented together with the associated gamma-ray horizon.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201731200
1432-0746
wos:2017
A59
WOS:000412876700003
Abdalla, H (reprint author), Northwest Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa.
Namibian authorities; University of Namibia; German Ministry for Education and Research (BMBF); Max Planck Society; German Research Foundation (DFG); Alexander von Humboldt Foundation; Deutsche Forschungsgemeinschaft; French Ministry for Research; CNRS-IN2P3; Astroparticle Interdisciplinary Programme of the CNRS; UK Science and Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science Foundation; Polish National Science Centre; South African Department of Science and Technology; National Research Foundation; National Commission on Research, Science & Technology of Namibia (NCRST); Innsbruck University; Austrian Science Fund (FWF); Austrian Federal Ministry for Science, Research and Economy; University of Adelaide; Australian Research Council; Japan Society for the Promotion of Science; University of Amsterdam
importub
2020-04-20T00:06:01+00:00
filename=package.tar
09e04276411d7571c2c4ccf9017c6b1a
Hassan E. Abdalla
Attila Abramowski
Felix A. Aharonian
Faical Ait Benkhali
A. G. Akhperjanian
T. Andersson
Ekrem Oǧuzhan Anguner
M. Arakawa
M. Arrieta
Pierre Aubert
Michael Backes
Arnim Balzer
Michelle Barnard
Yvonne Becherini
J. Becker Tjus
David Berge
Sabrina Bernhard
K. Bernlöhr
R. Blackwell
Markus Böttcher
Catherine Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
Johan Bregeon
Francois Brun
Pierre Brun
Mark Bryan
M. Buechele
Tomasz Bulik
M. Capasso
John Carr
Sabrina Casanova
M. Cerruti
N. Chakraborty
Ryan C. G. Chaves
Andrew Chen
J. Chevalier
M. Coffaro
Sergio Colafrancesco
Gabriele Cologna
B. Condon
Jan Conrad
Y. Cui
I. D. Davids
J. Decock
B. Degrange
C. Deil
J. Devin
P. de Wilt
L. Dirson
A. Djannati-Atai
W. Domainko
A. Donath
K. Dutson
J. Dyks
T. Edwards
Kathrin Egberts
P. Eger
J. -P. Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. V. Fernandes
A. Fiasson
G. Fontaine
A. Foerster
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
A. Goyal
M. -H. Grondin
J. Hahn
M. Haupt
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
James Anthony Hinton
W. Hofmann
Clemens Hoischen
Tim Lukas Holch
M. Holler
D. Horns
A. Ivascenko
H. Iwasaki
A. Jacholkowska
M. Jamrozy
M. Janiak
D. Jankowsky
F. Jankowsky
M. Jingo
T. Jogler
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
J. King
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
P. P. Kruger
H. Laffon
G. Lamanna
J. Lau
J. -P. Lees
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Liu
R. Lopez-Coto
I. Lypova
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
K. Mora
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
N. W. Pekeur
G. Pelletier
C. Perennes
P. -O. Petrucci
B. Peyaud
Q. Piel
S. Pita
H. Poon
D. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
S. Richter
F. Rieger
C. Romoli
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
S. Saito
D. Salek
David M. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Settimo
A. S. Seyffert
N. Shafi
I. Shilon
R. Simoni
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
K. Stycz
Iurii Sushch
T. Takahashi
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
N. Zywucka
eng
uncontrolled
gamma rays: galaxies
eng
uncontrolled
BL Lacertae objects: general
eng
uncontrolled
cosmic background radiation
eng
uncontrolled
infrared: diffuse background
Institut für Physik und Astronomie
Referiert
Import
46148
2017
2017
eng
628
650
9
850
article
IOP Publ. Ltd.
Bristol
HESS Collaboration
1
--
--
--
TeV Gamma-Ray Observations of the Binary Neutron Star Merger GW170817 with HESS
We search for high-energy gamma-ray emission from the binary neutron star merger GW170817 with the H.E.S.S. Imaging Air Cherenkov Telescopes. The observations presented here have been obtained starting only 5.3 hr after GW170817. The H.E.S.S. target selection identified regions of high probability to find a counterpart of the gravitational-wave event. The first of these regions contained the counterpart SSS17a that has been identified in the optical range several hours after our observations. We can therefore present the first data obtained by a ground-based pointing instrument on this object. A subsequent monitoring campaign with the H.E.S.S. telescopes extended over several days, covering timescales from 0.22 to 5.2 days and energy ranges between 270 GeV to 8.55 TeV. No significant gamma-ray emission has been found. The derived upper limits on the very-high-energy gamma-ray flux for the first time constrain non-thermal, high-energy emission following the merger of a confirmed binary neutron star system.
The astrophysical journal : an international review of spectroscopy and astronomical physics ; Part 2, Letters
10.3847/2041-8213/aa97d2
2041-8205
2041-8213
wos:2017
L22
WOS:000416034400002
Fussling, M (reprint author), DESY, D-15738 Zeuthen, Germany., contact.hess@hess-experiment.eu
German Ministry for Education and Research (BMBF); Max Planck Society; German Research Foundation (DFG); French Ministry for Research; CNRS-IN2P3; Astroparticle Interdisciplinary Programme of the CNRS; U.K. Science and Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science Foundation; Polish Ministry of Science and Higher Education; South African Department of Science and Technology; National Research Foundation; University of Namibia; Innsbruck University; Austrian Science Fund (FWF); Austrian Federal Ministry for Science, Research and Economy; University of Adelaide; Australian Research Council
importub
2020-04-19T23:03:01+00:00
filename=package.tar
a693a0894944dd96ed3392609717ae47
Hassan E. Abdalla
Attila Abramowski
Felix A. Aharonian
Faical Ait Benkhali
Ekrem Oǧuzhan Anguner
M. Arakawa
M. Arrieta
Pierre Aubert
Michael Backes
Arnim Balzer
Michelle Barnard
Yvonne Becherini
J. Becker Tjus
David Berge
Sabrina Bernhard
K. Bernlöhr
R. Blackwell
Markus Böttcher
Catherine Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
Johan Bregeon
Francois Brun
Pierre Brun
Mark Bryan
M. Buechele
Tomasz Bulik
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
N. Chakraborty
Ryan C. G. Chaves
Andrew Chen
J. Chevalier
Sergio Colafrancesco
B. Condon
Jan Conrad
I. D. Davids
J. Decock
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Donath
K. Dutson
J. Dyks
T. Edwards
Kathrin Egberts
G. Emery
J. -P. Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. V. Fernandes
A. Fiasson
G. Fontaine
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
T. Garrigoux
F. Gate
G. Giavitto
B. Giebels
D. Glawion
J. F. Glicenstein
D. Gottschall
M. -H. Grondin
J. Hahn
M. Haupt
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
James Anthony Hinton
W. Hofmann
Clemens Hoischen
Tim Lukas Holch
M. Holler
D. Horns
A. Ivascenko
H. Iwasaki
A. Jacholkowska
M. Jamrozy
D. Jankowsky
F. Jankowsky
M. Jingo
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
J. King
S. Klepser
D. Klochkov
W. Kluzniak
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
P. P. Kruer
H. Laffon
G. Lamanna
J. Lau
J. -P. Lees
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Liu
R. Lopez-Coto
I. Lypova
D. Malyshev
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
K. Mora
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
N. W. Pekeur
G. Pelletier
C. Perennes
P. -O. Petrucci
B. Peyaud
Q. Piel
S. Pita
V. Poireau
H. Poon
D. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
S. Saito
David M. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Settimo
A. S. Seyffert
N. Shafi
I. Shilon
K. Shiningayamwe
R. Simoni
H. Sol
F. Spanier
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
Iurii Sushch
T. Takahashi
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
J. Zorn
N. Zywucka
eng
uncontrolled
gamma-ray burst: individual (GRB 170817A)
eng
uncontrolled
gamma rays: general
eng
uncontrolled
gravitational waves
Institut für Physik und Astronomie
Referiert
Import
44856
2016
2016
eng
7
117
article
American Physical Society
College Park
HESS Collaboration
1
--
--
--
HESS Limits on Linelike Dark Matter Signatures in the 100 GeV to 2 TeV Energy Range Close to the Galactic Center
A search for dark matter linelike signals iss performed in the vicinity of the Galactic Center by the H.E.S.S. experiment on observational data taken in 2014. An unbinned likelihood analysis iss developed to improve the sensitivity to linelike signals. The upgraded analysis along with newer data extend the energy coverage of the previous measurement down to 100 GeV. The 18 h of data collected with the H.E.S.S. array allow one to rule out at 95% C.L. the presence of a 130 GeV line (at l = -1.5 degrees, b = 0 degrees and for a dark matter profile centered at this location) previously reported in Fermi-LAT data. This new analysis overlaps significantly in energy with previous Fermi-LAT and H.E.S.S. results. No significant excess associated with dark matter annihilations was found in the energy range of 100 GeV to 2 TeV and upper limits on the gamma-ray flux and the velocity weighted annihilation cross section are derived adopting an Einasto dark matter halo profile. Expected limits for present and future large statistics H.E.S.S. observations are also given.
Physical review letters
10.1103/PhysRevLett.117.151302
27768338
0031-9007
1079-7114
wos2016:2019
151302
WOS:000385341900005
Mora, K (reprint author), Stockholm Univ, Albanova Univ Ctr, Oskar Klein Ctr, Dept Phys, SE-10691 Stockholm, Sweden., contact.hess@hess-experiment.eu
German Ministry for Education and Research (BMBF); Max Planck Society; German Research Foundation (DFG); French Ministry for Research; Centre National de la Recherche Scientifique-Institut National de Physique Nucleaire et de Physique des Particules; Astroparticle Interdisciplinary Programme of the Centre National de la Recherche Scientifique; United Kingdom Science and Technology Facilities Council (STFC); Institute of Particle and Nuclear Physics of the Charles University; Czech Science Foundation; Polish Ministry of Science and Higher Education; South African Department of Science and Technology; National Research Foundation; University of Namibia; European Union [PIEF-GA-2012-332350]
importub
2020-03-22T13:40:01+00:00
filename=package.tar
61fe65fdd5067852c6c8f76001d04e78
Hassan E. Abdalla
Attila Abramowski
Felix A. Aharonian
Faical Ait Benkhali
A. G. Akhperjanian
T. Andersson
Ekrem Oǧuzhan Angüner
M. Arrieta
Pierre Aubert
Michael Backes
Arnim Balzer
Michelle Barnard
Yvonne Becherini
J. Becker Tjus
David Berge
Sabrina Bernhard
K. Bernlöhr
E. Birsin
R. Blackwell
Markus Boettcher
Catherine Boisson
J. Bolmont
Pol Bordas
Johan Bregeon
Francois Brun
Pierre Brun
Mark Bryan
Tomasz Bulik
M. Capasso
John Carr
Sabrina Casanova
N. Chakraborty
R. Chalme-Calvet
Ryan C. G. Chaves
Andrew Chen
J. Chevalier
M. Chretien
Sergio Colafrancesco
Gabriele Cologna
B. Condon
Jan Conrad
C. Couturier
Y. Cui
I. D. Davids
B. Degrange
C. Deil
J. Devin
P. de Wilt
A. Djannati-Ataie
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
J. -P. Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. V. Fernandes
A. Fiasson
G. Fontaine
A. Foerster
S. Funk
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
A. Goyal
M. -H. Grondin
M. Grudzinska
D. Hadasch
J. Hahn
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
James Anthony Hinton
W. Hofmann
Clemens Hoischen
M. Holler
D. Horns
A. Ivascenko
A. Jacholkowska
M. Jamrozy
M. Janiak
D. Jankowsky
F. Jankowsky
M. Jingo
T. Jogler
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
U. Katz
D. Kerszberg
B. Khelifi
M. Kieffer
J. King
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lau
J. -P. Lees
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
R. Liu
T. Lohse
M. Lorentz
I. Lypova
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
Michael Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
K. Mora
E. Moulin
T. Murach
M. de Naurois
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
S. Oettl
I. Oya
M. Padovani
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
C. Perennes
P. -O. Petrucci
B. Peyaud
S. Pita
H. Poon
D. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
David M. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwemmer
M. Settimo
A. S. Seyffert
N. Shafi
I. Shilon
R. Simoni
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
Iurii Sushch
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
M. Tluczykont
C. Trichard
R. Tuffs
J. van der Walt
C. van Eldik
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
N. Zywucka
Institut für Physik und Astronomie
Referiert
Import
38944
2015
2015
eng
6
577
article
EDP Sciences
Les Ulis
HESS Collaboration
1
--
--
--
Discovery of variable VHE gamma-ray emission from the binary system 1FGL J1018.6-5856
Re-observations with the HESS telescope array of the very high-energy (VHE) source HESS J1018-589A that is coincident with the Fermi-LAT gamma-ray binary 1FGL J1018.6-5856 have resulted in a source detection significance of more than 9 sigma and the detection of variability (chi(2)/nu of 238.3/155) in the emitted gamma-ray flux. This variability confirms the association of HESS J1018-589A with the high-energy gamma-ray binary detected Fermi-LAT and also confirms the point-like source as a new VHE binary system. The spectrum of HESS J1018-589A is best fit with a power-law function with photon index Gamma = 2.20 +/- 0.14(stat) +/- 0.2(sys). Emission is detected up to similar to 20 TeV. The mean differential flux level is (2.9 +/- 0.4) x 10(-13) TeV-1 cm(-2) s(-1) at 1 TeV, equivalent to similar to 1% of the flux from the Crab Nebula at the same energy. Variability is clearly detected the night-by-night light curve. When folded on the orbital period of 16.58 days, the rebinned light curve peaks in phase with the observed X-ray high-energy phaseograms. The fit of the HESS phaseogram to a constant flux provides evidence of periodicity at the level of N-sigma > 3 sigma. The of the VHE phaseogram and measured spectrum suggest a low-inclination, low-eccentricity system with a modest impact from VHE gamma-ray due to pair production (tau less than or similar to 1 at 300 GeV).
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201525699
0004-6361
1432-0746
wos:2015
A131
WOS:000357345900083
Wilhelmi, ED (reprint author), CSIC, Inst Ciencies Espai IEEC, Fac Ciencies, Campus UAB,Torre C5,Parell,2a Planta, Barcelona 08193, Spain., emma@mpi-hd.mpg.de; yictor.zabalza@le.ac.uk
German Ministry for Education and Research (BMBF); Max Planck Society,
the Max Planck Society, the German Research Foundation (DFG); German
Research Foundation (DFG); French Ministry for Research; CNRS-IN2P3;
Astroparticle Interdisciplinary Programme of the CNRS; UK Science and
Technology Facilities Council (STFC); IPNP of the Charles University;
Czech Science Foundation; Polish Ministry of Science and Higher
Education; South African Department of Science and Technology; National
Research Foundation; University of Namibia
Attila Abramowski
Felix A. Aharonian
Faical Ait Benkhali
A. G. Akhperjanian
Ekrem Oǧuzhan Angüner
Michael Backes
Arnim Balzer
Yvonne Becherini
J. Becker Tjus
David Berge
Sabrina Bernhard
K. Bernlöhr
E. Birsin
R. Blackwell
Markus Boettcher
Catherine Boisson
J. Bolmont
Pol Bordas
Johan Bregeon
Francois Brun
Pierre Brun
Mark Bryan
Tomasz Bulik
John Carr
Sabrina Casanova
N. Chakraborty
R. Chalme-Calvet
Ryan C. G. Chaves
Andrew Chen
M. Chretien
Sergio Colafrancesco
Gabriele Cologna
Jan Conrad
C. Couturier
Y. Cui
I. D. Davids
B. Degrange
C. Deil
P. deWilt
A. Djannati-Ataï
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
J. -P. Ernenwein
P. Espigat
C. Farnier
S. Fegan
F. Feinstein
M. V. Fernandesl
D. Fernandez
A. Fiasson
G. Fontaine
A. Foerster
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
A. Goyal
M. -H. Grondin
M. Grudzinska
D. Hadasch
S. Haeffner
J. Hahn
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
James Anthony Hinton
W. Hofmann
P. Hofverberg
Clemens Hoischen
M. Holler
D. Horns
A. Ivascenko
A. Jacholkowska
C. Jahn
M. Jamrozy
M. Janiak
F. Jankowsky
I. Jung-Richardt
M. A. Kastendieckl
K. Katarzynski
U. Katz
D. Kerszberg
B. Khelifi
M. Kieffer
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lau
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
T. Lohse
A. Lopatin
C. -C. Lu
R. Lui
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
U. Menzler
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
K. Mora
E. Moulin
T. Murach
M. de Naurois
J. Niemiec
L. Oakes
H. Odaka
S. Oettl
S. Ohm
E. de Ona Wilhelmi
B. Opitz
M. Ostrowski
I. Oya
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
P. -O. Petrucci
B. Peyaud
S. Pita
H. Poon
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
I. Reichardt
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
David M. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwemmer
A. S. Seyffert
R. Simoni
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
Iurii Sushch
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
M. Tluczykont
C. Trichard
K. Valerius
J. van der Walt
C. van Eldik
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
S. J. Wagner
P. Wagner
R. M. Wagner
M. Weidinger
Q. Weitzel
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
F. Zefi
N. Zywucka
eng
uncontrolled
gamma rays: stars
eng
uncontrolled
stars: individual: 1FGL J1018.6-5856
eng
uncontrolled
radiation mechanisms: non-thermal
eng
uncontrolled
acceleration of particles
eng
uncontrolled
X-rays: binaries
Institut für Physik und Astronomie
Referiert
45503
2016
2016
eng
476
+
14
531
article
Nature Publ. Group
London
HESS Collaboration
1
--
--
--
Acceleration of petaelectronvolt protons in the Galactic Centre
Galactic cosmic rays reach energies of at least a few petaelectronvolts (of the order of 1015 electronvolts). This implies that our Galaxy contains petaelectronvolt accelerators (‘PeVatrons’), but all proposed models of Galactic cosmic-ray accelerators encounter difficulties at exactly these energies. Dozens of Galactic accelerators capable of accelerating particles to energies of tens of teraelectronvolts (of the order of 1013 electronvolts) were inferred from recent γ-ray observations3. However, none of the currently known accelerators—not even the handful of shell-type supernova remnants commonly believed to supply most Galactic cosmic rays—has shown the characteristic tracers of petaelectronvolt particles, namely, power-law spectra of γ-rays extending without a cut-off or a spectral break to tens of teraelectronvolts4. Here we report deep γ-ray observations with arcminute angular resolution of the region surrounding the Galactic Centre, which show the expected tracer of the presence of petaelectronvolt protons within the central 10 parsecs of the Galaxy. We propose that the supermassive black hole Sagittarius A* is linked to this PeVatron. Sagittarius A* went through active phases in the past, as demonstrated by X-ray outbursts5and an outflow from the Galactic Centre6. Although its current rate of particle acceleration is not sufficient to provide a substantial contribution to Galactic cosmic rays, Sagittarius A* could have plausibly been more active over the last 106–107 years, and therefore should be considered as a viable alternative to supernova remnants as a source of petaelectronvolt Galactic cosmic rays.
Nature : the international weekly journal of science
10.1038/nature17147
0028-0836
1476-4687
wos2016:2019
WOS:000372701300034
Abramowski, A (reprint author), Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany., contact.hess@hess-experiment.eu
German Ministry for Education and Research (BMBF); Max Planck Society; German Research Foundation (DFG); French Ministry for Research; CNRS-IN2P3; Astroparticle Interdisciplinary Programme of the CNRS; UK Science and Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science Foundation; Polish Ministry of Science and Higher Education; South African Department of Science and Technology; National Research Foundation; University of Namibia; EU FP7 Marie Curie grant [PIEF-GA-2012-332350]
importub
2020-03-22T19:05:02+00:00
filename=package.tar
b0ac94c2ed658dad86e5fd5cb79fb41c
Attila Abramowski
Felix A. Aharonian
Faical Ait Benkhali
A. G. Akhperjanian
Ekrem Oǧuzhan Angüner
Michael Backes
Arnim Balzer
Yvonne Becherini
J. Becker Tjus
David Berge
Sabrina Bernhard
K. Bernlöhr
E. Birsin
R. Blackwell
Markus Boettcher
Catherine Boisson
J. Bolmont
Pol Bordas
Johan Bregeon
Francois Brun
Pierre Brun
Mark Bryan
Tomasz Bulik
John Carr
Sabrina Casanova
N. Chakraborty
R. Chalme-Calvet
Ryan C. G. Chaves
Andrew Chen
M. Chretien
Sergio Colafrancesco
Gabriele Cologna
Jan Conrad
C. Couturier
Y. Cui
I. D. Davids
B. Degrange
C. Deil
P. deWilt
A. Djannati-Ata
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
J-P. Ernenwein
P. Espigat
C. Farnier
S. Fegan
F. Feinstein
M. V. Fernandes
D. Fernandez
A. Fiasson
G. Fontaine
A. Foerster
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
A. Goyal
M-H. Grondin
M. Grudzinska
D. Hadasch
S. Haeffner
J. Hahn
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
James Anthony Hinton
W. Hofmann
P. Hofverberg
Clemens Hoischen
M. Holler
D. Horns
A. Ivascenko
A. Jacholkowska
M. Jamrozy
M. Janiak
F. Jankowsky
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
U. Katz
D. Kerszberg
B. Khelifi
M. Kieffer
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lau
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J-P. Lenain
T. Lohse
A. Lopatin
C-C. Lu
R. Lui
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
U. Menzler
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
K. Mora
E. Moulin
T. Murach
M. de Naurois
J. Niemiec
L. Oakes
H. Odaka
S. Oettl
S. Ohm
B. Opitz
M. Ostrowski
I. Oya
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
P-O. Petrucci
B. Peyaud
S. Pita
H. Poon
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
I. Reichardt
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
David M. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwemmer
A. S. Seyffert
R. Simoni
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
Iurii Sushch
J-P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
M. Tluczykont
C. Trichard
R. Tuffs
K. Valerius
J. van der Walt
C. van Eldik
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
S. J. Wagner
P. Wagner
R. M. Wagner
M. Weidinger
Q. Weitzel
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
F. Zefi
N. Zywucka
Institut für Physik und Astronomie
Referiert
Import
51271
2018
2018
eng
22
11
article
IOP Publishing Ltd. (Bristol)
Bristol
HESS Collaboration
1
2018-11-23
2018-11-23
--
Searches for gamma-ray lines and 'pure WIMP' spectra from Dark Matter annihilations in dwarf galaxies with H.E.S.S.
Dwarf spheroidal galaxies are among the most promising targets for detecting signals of Dark Matter (DM) annihilations. The H.E.S.S. experiment has observed five of these systems for a total of about 130 hours. The data are re-analyzed here, and, in the absence of any detected signals, are interpreted in terms of limits on the DM annihilation cross section. Two scenarios are considered: i) DM annihilation into mono-energetic gamma-rays and ii) DM in the form of pure WIMP multiplets that, annihilating into all electroweak bosons, produce a distinctive gamma-ray spectral shape with a high-energy peak at the DM mass and a lower-energy continuum. For case i), upper limits at 95% confidence level of about <sigma upsilon > less than or similar to 3 x 10(-25) cm(3) s(-1) are obtained in the mass range of 400 GeV to 1TeV. For case ii), the full spectral shape of the models is used and several excluded regions are identified, but the thermal masses of the candidates are not robustly ruled out.
Journal of cosmology and astroparticle physics
10.1088/1475-7516/2018/11/037
1475-7516
wos:2018
037
WOS:000451080800001
Panci, P (reprint author), CERN, Theoret Phys Dept, Geneva, Switzerland.
2021-07-12T07:51:33+00:00
sword
importub
filename=package.tar
01034219a979067b647171ae401f640b
false
true
Hassan E. Abdalla
Felix A. Aharonian
Faical Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Arcaro
C. Armand
M. Arrieta
Michael Backes
M. Barnard
Yvonne Becherini
J. Becker Tjus
D. Berge
S. Bernhard
Konrad Bernlöhr
R. Blackwell
Markus Böttcher
C. Boisson
Julien Bolmont
S. Bonnefoy
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Büchele
Tomasz Bulik
Tomas Bylund
Massimo Capasso
S. Caroff
A. Carosi
Sabrina Casanova
Matteo Cerruti
Nachiketa Chakraborty
S. Chandra
R. C. G. Chaves
A. Chen
Sergio Colafrancesco
B. Condon
Isak Davids
Christoph Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Dmytriiev
Axel Donath
Victor Doroshenko
J. Dyks
Kathrin Egberts
G. Emery
J. -P. Ernenwein
Stefan Eschbach
S. Fegan
Armand Fiasson
G. Fontaine
Sebastian Funk
Matthias Füßling
S. Gabici
Y. A. Gallant
F. Gate
Gianluca Giavitto
Dorit Eisenacher Glawion
Jean-François Glicenstein
D. Gottschall
Marie-Hélène Grondin
J. Hahn
M. Haupt
G. Heinzelmann
Gilles Henri
G. Hermann
James Anthony Hinton
Werner Hofmann
Clemens Hoischen
Tim Lukas Holch
M. Holler
D. Horns
D. Huber
H. Iwasaki
A. Jacholkowska
M. Jamrozy
David Jankowsky
Felix Jankowsky
L. Jouvin
I. Jung-Richardt
M. A. Kastendieck
Krzysztof Katarzyński
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
J. King
S. Klepser
W. Kluzniak
Nu. Komin
K. Kosack
S. Krakau
M. Kraus
P. P. Kruger
G. Lamanna
J. Lau
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J. -P. Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Lopez-Coto
I. Lypova
D. Malyshev
V. Marandon
A. Marcowith
C. Mariaud
G. Marti-Devesa
R. Marx
G. Maurin
P. J. Meintjes
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I. Oya
M. Padovani
M. Panter
R. D. Parsons
C. Perennes
P. -O. Petrucci
B. Peyaud
Q. Piel
S. Pita
V. Poireau
A. Priyana Noel
D. A. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
E. Ruiz-Velasco
V. Sahakian
S. Saito
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Senniappan
A. S. Seyffert
N. Shafi
I. Shilon
K. Shiningayamwe
R. Simoni
A. Sinha
H. Sol
F. Spanier
A. Specovius
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
T. Takahashi
J. -P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
R. M. Wagner
R. White
A. Wierzcholska
R. Yang
D. Zaborov
M. Zacharias
R. Zanin
A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
J. Zorn
N. Zywucka
M. Cirelli
P. Panci
F. Sala
J. Silk
M. Taoso
eng
uncontrolled
dark matter detectors
eng
uncontrolled
dark matter experiments
eng
uncontrolled
dwarfs galaxies
eng
uncontrolled
gamma ray detectors
Physik
Institut für Physik und Astronomie
Referiert
Import
Green Open-Access
50973
2019
2019
eng
464
+
12
7783
575
article
Nature Publ. Group
London
1
--
2019-11-20
--
A very-high-energy component deep in the gamma-ray burst afterglow
Gamma-ray bursts (GRBs) are brief flashes of gamma-rays and are considered to be the most energetic explosive phenomena in the Universe(1). The emission from GRBs comprises a short (typically tens of seconds) and bright prompt emission, followed by a much longer afterglow phase. During the afterglow phase, the shocked outflow-produced by the interaction between the ejected matter and the circumburst medium-slows down, and a gradual decrease in brightness is observed(2). GRBs typically emit most of their energy via.-rays with energies in the kiloelectronvolt-to-megaelectronvolt range, but a few photons with energies of tens of gigaelectronvolts have been detected by space-based instruments(3). However, the origins of such high-energy (above one gigaelectronvolt) photons and the presence of very-high-energy (more than 100 gigaelectronvolts) emission have remained elusive(4). Here we report observations of very-high-energy emission in the bright GRB 180720B deep in the GRB afterglow-ten hours after the end of the prompt emission phase, when the X-ray flux had already decayed by four orders of magnitude. Two possible explanations exist for the observed radiation: inverse Compton emission and synchrotron emission of ultrarelativistic electrons. Our observations show that the energy fluxes in the X-ray and gamma-ray range and their photon indices remain comparable to each other throughout the afterglow. This discovery places distinct constraints on the GRB environment for both emission mechanisms, with the inverse Compton explanation alleviating the particle energy requirements for the emission observed at late times. The late timing of this detection has consequences for the future observations of GRBs at the highest energies.
Nature : the international weekly journal of science
10.1038/s41586-019-1743-9
31748724
0028-0836
1476-4687
wos:2019
WOS:000498812200044
Ruiz-Velasco, E (reprint author), Max Planck Inst Kernphys, Heidelberg, Germany., contact.hess@hess-experiment.eu
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); Helmholtz AssociationHelmholtz Association; Alexander von Humboldt FoundationAlexander von Humboldt Foundation; French Ministry of Higher Education, Research and Innovation; Centre national de la recherche scientifiqueCentre National de la Recherche Scientifique (CNRS) [CNRS/IN2P3]; (CNRS/INSU)Centre National de la energies alternatives (CEA)French Atomic Energy Commission; UK Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); Knut and Alice Wallenberg FoundationKnut & Alice Wallenberg Foundation; National Science Centre, Poland [2016/22/M/ST9/00382]; National Research Foundation; University of Namibia; National Commission on Research, Science & Technology of Namibia (NCRST); Austrian Federal Ministry of Education, Science and Research; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Australian Research Council (ARC)Australian Research Council; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; University of Amsterdam; EGI Federation; LAT development; US Department of Energy (DOE)United States Department of Energy (DOE); ASIItalian Space Agency; INFN (Italy), MEXT; K. A. Wallenberg FoundationKnut & Alice Wallenberg Foundation; Swedish Research CouncilSwedish Research Council; National Space Board (Sweden); INAF (Italy)Istituto Nazionale Astrofisica; CNES (France)Centre National [DE-AC02-76SF00515]
2021-06-15T12:39:11+00:00
sword
importub
filename=package.tar
1bad8215920f52ff70ec83407ce3d200
Ruiz-Velasco, E.
false
true
Hassan E. Abdalla
R. Adam
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Arcaro
C. Armand
H. Ashkar
M. Backes
V. Barbosa Martins
M. Barnard
Y. Becherini
D. Berge
K. Bernloehr
E. Bissaldi
R. Blackwell
M. Boettcher
C. Boisson
J. Bolmont
S. Bonnefoy
J. Bregeon
M. Breuhaus
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
T. Bylund
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
T. Chand
S. Chandra
A. Chen
S. Colafrancesco
M. Curylo
I. D. Davids
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Dmytriiev
A. Donath
V Doroshenko
J. Dyks
Kathrin Egberts
G. Emery
J-P Ernenwein
S. Eschbach
K. Feijen
S. Fegan
A. Fiasson
G. Fontaine
S. Funk
Matthias Fussling
S. Gabici
Y. A. Gallant
F. Gate
G. Giavitto
L. Giunti
D. Glawion
J. F. Glicenstein
D. Gottschall
M-H Grondin
J. Hahn
M. Haupt
G. Heinzelmann
G. Henri
G. Hermann
J. A. Hinton
W. Hofmann
Clemens Hoischen
T. L. Holch
M. Holler
D. Horns
D. Huber
H. Iwasaki
M. Jamrozy
D. Jankowsky
F. Jankowsky
A. Jardin-Blicq
I Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Khangulyan
B. Khelifi
J. King
S. Klepser
W. Kluzniak
Nu Komin
K. Kosack
D. Kostunin
M. Kreter
G. Lamanna
A. Lemiere
M. Lemoine-Goumard
J-P Lenain
Eva Leser
C. Levy
T. Lohse
I Lypova
J. Mackey
J. Majumdar
D. Malyshev
V Marandon
A. Marcowith
A. Mares
C. Mariaud
G. Marti-Devesa
R. Marx
G. Maurin
P. J. Meintjes
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
C. Moore
E. Moulin
J. Muller
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
E. de Ona Wilhelmi
M. Ostrowski
I Oya
M. Panter
R. D. Parsons
C. Perennes
P-O Petrucci
B. Peyaud
Q. Piel
S. Pita
V Poireau
A. Priyana Noel
D. A. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
Q. Remy
M. Renaud
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
E. Ruiz-Velasco
V Sahakian
S. Sailer
S. Saito
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
H. M. Schutte
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Senniappan
A. S. Seyffert
N. Shafi
K. Shiningayamwe
R. Simoni
A. Sinha
H. Sol
A. Specovius
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
T. Takahashi
T. Tavernier
A. M. Taylor
R. Terrier
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
P. Vincent
J. Vink
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
R. White
A. Wierzcholska
R. Yang
H. Yoneda
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
A. Ziegler
J. Zorn
N. Zywucka
F. de Palma
M. Axelsson
O. J. Roberts
Physik
Institut für Physik und Astronomie
Referiert
Import
Green Open-Access
48817
2019
2019
eng
16
627
article
EDP Sciences
Les Ulis
HESS Collaboration
1
2019-07-08
2019-05-17
--
H.E.S.S. and Suzaku observations of the Vela X pulsar wind nebula
Context. Pulsar wind nebulae (PWNe) represent the most prominent population of Galactic very-high-energy gamma-ray sources and are thought to be an efficient source of leptonic cosmic rays. Vela X is a nearby middle-aged PWN, which shows bright X-ray and TeV gamma-ray emission towards an elongated structure called the cocoon. Aims. Since TeV emission is likely inverse-Compton emission of electrons, predominantly from interactions with the cosmic microwave background, while X-ray emission is synchrotron radiation of the same electrons, we aim to derive the properties of the relativistic particles and of magnetic fields with minimal modelling. Methods. We used data from the Suzaku XIS to derive the spectra from three compact regions in Vela X covering distances from 0.3 to 4 pc from the pulsar along the cocoon. We obtained gamma-ray spectra of the same regions from H.E.S.S. observations and fitted a radiative model to the multi-wavelength spectra. Results. The TeV electron spectra and magnetic field strengths are consistent within the uncertainties for the three regions, with energy densities of the order 10(-12) erg cm(-3). The data indicate the presence of a cutoff in the electron spectrum at energies of similar to 100 TeV and a magnetic field strength of similar to 6 mu G. Constraints on the presence of turbulent magnetic fields are weak. Conclusions. The pressure of TeV electrons and magnetic fields in the cocoon is dynamically negligible, requiring the presence of another dominant pressure component to balance the pulsar wind at the termination shock. Sub-TeV electrons cannot completely account for the missing pressure, which may be provided either by relativistic ions or from mixing of the ejecta with the pulsar wind. The electron spectra are consistent with expectations from transport scenarios dominated either by advection via the reverse shock or by diffusion, but for the latter the role of radiative losses near the termination shock needs to be further investigated in the light of the measured cutoff energies. Constraints on turbulent magnetic fields and the shape of the electron cutoff can be improved by spectral measurements in the energy range greater than or similar to 10 keV.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201935458
1432-0746
wos:2019
A100
WOS:000474334300001
Abdalla, H (reprint author), North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa., luigi.tibaldo@irap.omp.eu
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck Society; German Research Foundation (DFG)German Research Foundation (DFG); Alexander von Humboldt FoundationAlexander von Humboldt Foundation; Deutsche ForschungsgemeinschaftGerman Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish National Science Centre; South African Department of Science and Technology and National Research Foundation; University of Namibia; National Commission on Research, Science & Technology of Namibia (NCRST); Austrian Science Fund (FWF)Austrian Science Fund (FWF); Austrian Federal Ministry for Science, Research and Economy; Australian Research CouncilAustralian Research Council; University of Amsterdam; EGI Federation; U. K. Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); Innsbruck University; University of Adelaide; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; Namibian authorities
2021-01-07T13:54:47+00:00
sword
importub
filename=package.tar
c8ad68afa1f0334b88f725827f8482e5
false
true
CC-BY - Namensnennung 4.0 International
Hassan E. Abdalla
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Arcaro
C. Armand
M. Backes
M. Barnard
Y. Becherini
D. Berge
K. Bernloehr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
S. Bonnefoy
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
T. Bylund
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
N. Chakraborty
T. Chand
S. Chandra
R. C. G. Chaves
A. Chen
S. Colafrancesco
B. Condon
I. D. Davids
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Dmytriiev
A. Donath
V Doroshenko
J. Dyks
Kathrin Egberts
G. Emery
J-P Ernenwein
S. Eschbach
K. Feijen
S. Fegan
A. Fiasson
G. Fontaine
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
F. Gate
G. Giavitto
D. Glawion
J. F. Glicenstein
D. Gottschall
M-H Grondin
J. Hahn
M. Haupt
G. Heinzelmann
G. Henri
G. Hermann
James Anthony Hinton
W. Hofmann
Clemens Hoischen
Tim Lukas Holch
M. Holler
D. Horns
D. Huber
H. Iwasaki
A. Jacholkowska
M. Jamrozy
D. Jankowsky
F. Jankowsky
L. Jouvin
I Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Khangulyan
B. Khelifi
J. King
S. Klepser
W. Kluzniak
Nu Komin
K. Kosack
D. Kostunin
M. Kraus
G. Lamanna
J. Lau
A. Lemiere
M. Lemoine-Goumard
J-P Lenain
Eva Leser
T. Lohse
R. Lopez-Coto
I Lypova
D. Malyshev
V Marandon
A. Marcowith
C. Mariaud
G. Marti-Devesa
R. Marx
G. Maurin
N. Maxted
P. J. Meintjes
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
C. Moore
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
E. de Ona Wilhelmi
M. Ostrowski
I Oya
M. Panter
R. D. Parsons
C. Perennes
P-O Petrucci
B. Peyaud
Q. Piel
S. Pita
V Poireau
A. Priyana Noel
D. A. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
E. Ruiz-Velasco
V Sahakian
S. Saito
David M. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
H. Schutte
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Senniappan
A. S. Seyffert
N. Shafi
I Shilon
K. Shiningayamwe
R. Simoni
A. Sinha
H. Sol
A. Specovius
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
T. Takahashi
J-P Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
Luigi Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
R. White
A. Wierzcholska
R. Yang
H. Yoneda
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
A. Ziegler
J. Zorn
N. Zywucka
eng
uncontrolled
stars: winds, outflows
eng
uncontrolled
gamma rays: stars
eng
uncontrolled
radiation mechanisms: non-thermal
eng
uncontrolled
acceleration of particles
eng
uncontrolled
pulsars: individual: PSR B0833-45
Physik
Institut für Physik und Astronomie
Referiert
Import
Hybrid Open-Access
50453
2019
2019
eng
9
2
870
article
IOP Publ. Ltd.
Bristol
HESS Collaboration
1
2019-01-11
2019-01-11
--
The 2014TeV gamma-Ray Flare of Mrk 501 Seen with HESS
The blazar Mrk 501 (z = 0.034) was observed at very-high-energy (VHE, E greater than or similar to 100 GeV) gamma-ray wavelengths during a bright flare on the night of 2014 June 23-24 (MJD 56832) with the H.E.S.S. phase-II array of Cherenkov telescopes. Data taken that night by H.E.S.S. at large zenith angle reveal an exceptional number of gamma-ray photons at multi-TeV energies, with rapid flux variability and an energy coverage extending significantly up to 20 TeV. This data set is used to constrain Lorentz invariance violation (LIV) using two independent channels: a temporal approach considers the possibility of an energy dependence in the arrival time of gamma-rays, whereas a spectral approach considers the possibility of modifications to the interaction of VHE gamma-rays with extragalactic background light (EBL) photons. The non-detection of energy-dependent time delays and the non-observation of deviations between the measured spectrum and that of a supposed power-law intrinsic spectrum with standard EBL attenuation are used independently to derive strong constraints on the energy scale of LIV (E-QG) in the subluminal scenario for linear and quadratic perturbations in the dispersion relation of photons. For the case of linear perturbations, the 95% confidence level limits obtained are E-QG,E-1 > 3.6 x 10(17) GeV using the temporal approach and E-QG,E-1 > 2.6 x 10(19) GeV using the spectral approach. For the case of quadratic perturbations, the limits obtained are E-QG,E-2 > 8.5 x 10(10) GeV using the temporal approach and E-QG,E-2 > 7.8 x 10(11) GeV using the spectral approach.
The astrophysical journal : an international review of spectroscopy and astronomical physics
Temporal and Spectral Constraints on Lorentz Invariance Violation
10.3847/1538-4357/aaf1c4
0004-637X
1538-4357
wos:2019
93
WOS:000455820100039
Chakraborty, N (reprint author), Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany., contact.hess@hess-experiment.eu
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); Helmholtz AssociationHelmholtz Association; Alexander von Humboldt FoundationAlexander von Humboldt Foundation; French Ministry of Higher Education, Research and Innovation; Centre National de la Recherche Scientifique (CNRS/IN2P3); Centre National de la Recherche Scientifique (CNRS/INSU)Centre National de la Recherche alternatives (CEA)French Atomic Energy Commission; U.K. Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); Knut and Alice Wallenberg FoundationKnut & Alice Wallenberg Foundation; National Science Centre, Poland [2016/22/M/ST9/00382]; South African Department of Science and Technology; National Research Foundation; University of Namibia; National Commission on Research, Science & Technology of Namibia (NCRST); Austrian Federal Ministry of Education, Science and Research; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Australian Research Council (ARC)Australian Research Council; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; University of Amsterdam
2021-04-21T08:12:49+00:00
sword
importub
filename=package.tar
6c2ea569fa0afd3ffa0856af7a9abc55
Chakraborty, Nachiketa
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true
Hassan E. Abdalla
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Arcaro
C. Armand
M. Arrieta
M. Backes
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
T. Bylund
M. Capasso
S. Caroff
A. Carosi
M. Cerruti
N. Chakraborty
S. Chandra
R. C. G. Chaves
A. Chen
S. Colafrancesco
B. Condon
I. D. Davids
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Dmytriiev
A. Donath
V Doroshenko
J. Dyks
Kathrin Egberts
G. Emery
J-P Ernenwein
S. Eschbach
S. Fegan
A. Fiasson
G. Fontaine
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
F. Gate
G. Giavitto
D. Glawion
J. F. Glicenstein
D. Gottschall
M-H Grondin
J. Hahn
M. Haupt
G. Heinzelmann
G. Henri
G. Hermann
James Anthony Hinton
W. Hofmann
Clemens Hoischen
Tim Lukas Holch
M. Holler
D. Horns
D. Huber
H. Iwasaki
A. Jacholkowska
M. Jamrozy
D. Jankowsky
F. Jankowsky
L. Jouvin
I Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
J. King
S. Klepser
W. Kluzniak
Nu Komin
K. Kosack
S. Krakau
M. Kraus
P. P. Kruger
G. Lamanna
J. Lau
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J-P Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Lopez-Coto
I Lypova
D. Malyshev
V Marandon
A. Marcowith
C. Mariaud
G. Marti-Devesa
R. Marx
G. Maurin
P. J. Meintjes
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I Oya
M. Padovani
M. Panter
R. D. Parsons
C. Perennes
P-O Petrucci
B. Peyaud
Q. Piel
S. Pita
V Poireau
A. Priyana Noel
D. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
E. Ruiz-Velasco
V Sahakian
S. Saito
David M. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Senniappan
A. S. Seyffert
N. Shafi
I Shilon
K. Shiningayamwe
R. Simoni
A. Sinha
H. Sol
F. Spanier
A. Specovius
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
T. Takahashi
J-P Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
R. M. Wagner
R. White
A. Wierzcholska
R. Yang
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
J. Zorn
N. Zywucka
eng
uncontrolled
astroparticle physics
eng
uncontrolled
BL Lacertae objects: individual (Mrk 501)
eng
uncontrolled
gamma rays: galaxies
Astronomie und zugeordnete Wissenschaften
Physik
Institut für Physik und Astronomie
Referiert
Import
Green Open-Access
42452
2018
2018
eng
135
doctoralthesis
1
--
--
2018-12-07
Multi-Messenger Astronomy with H.E.S.S: the Starburst Galaxy NGC253 and the Search for Short Time-Scale Transients
Multi-Botenteilchen-Astronomie mit H.E.S.S: die Starburstgalaxie NGC 253 und die Suche nach kurzzeit-Transienten
Gamma-ray astronomy has proven to provide unique insights into cosmic-ray accelerators in the past few decades. By combining information at the highest photon energies with the entire electromagnetic spectrum in multi-wavelength studies, detailed knowledge of non-thermal particle populations in astronomical objects and systems has been gained: Many individual classes of gamma-ray sources could be identified inside our galaxy and outside of it. Different sources were found to exhibit a wide range of temporal evolution, ranging from seconds to stable behaviours over many years of observations. With the dawn of both neutrino- and gravitational wave astronomy, additional messengers have come into play over the last years. This development presents the advent of multi-messenger astronomy: a novel approach not only to search for sources of cosmic rays, but for astronomy in general.
In this thesis, both traditional multi-wavelength studies and multi-messenger studies will be presented. They were carried out with the H.E.S.S. experiment, an imaging air Cherenkov telescope array located in the Khomas Highland of Namibia. H.E.S.S. has entered its second phase in 2012 with the addition of a large, fifth telescope. While the initial array was limited to the study of gamma-rays with energies above 100 GeV, the new instrument allows to access gamma-rays with energies down to a few tens of GeV. Strengths of the multi-wavelength approach will be demonstrated at the example of the galaxy NGC253, which is undergoing an episode of enhanced star-formation. The gamma-ray emission will be discussed in light of all the information on this system available from radio, infrared and X-rays. These wavelengths reveal detailed information on the population of supernova remnants, which are suspected cosmic-ray accelerators. A broad-band gamma-ray spectrum is derived from H.E.S.S. and Fermi-LAT data. The improved analysis of H.E.S.S. data provides a measurement which is no longer dominated by systematic uncertainties. The long-term behaviour of cosmic rays in the starburst galaxy NGC253 is finally characterised.
In contrast to the long time-scale evolution of a starburst galaxy, multi-messenger studies are especially intriguing when shorter time-scales are being probed. A prime example of a short time-scale transient are Gamma Ray Bursts. The efforts to understand this phenomenon effectively founded the branch of gamma-ray astronomy. The multi-messenger approach allows for the study of illusive phenomena such as Gamma Ray Bursts and other transients using electromagnetic radiation, neutrinos, cosmic rays and gravitational waves contemporaneously. With contemporaneous observations getting more important just recently, the execution of such observation campaigns still presents a big challenge due to the different limitations and strengths of the infrastructures.
An alert system for transient phenomena has been developed over the course of this thesis for H.E.S.S. It aims to address many follow-up challenges in order to maximise the science return of the new large telescope, which is able to repoint much faster than the initial four telescopes. The system allows for fully automated observations based on scientific alerts from any wavelength or messenger and allows H.E.S.S. to participate in multi-messenger campaigns. Utilising this new system, many interesting multi-messenger observation campaigns have been performed. Several highlight observations with H.E.S.S. are analysed, presented and discussed in this work. Among them are observations of Gamma Ray Bursts with low latency and low energy threshold, the follow-up of a neutrino candidate in spatial coincidence with a flaring active galactic nucleus and of the merger of two neutron stars, which was revealed by the coincidence of gravitational waves and a Gamma-Ray Burst.
Die Gammaastronomie hat sich in den letzten Jahrzehnten als eine wichtige Disziplin für die Suche nach den Beschleunigern der kosmischen Strahlung erwiesen. Dabei ergänzt die Gamma-Strahlung das Bild, welches wir aus Multi-Wellenlängen Studien gewonnen haben ausgezeichnet. Kürzlich sind die beiden neuen astronomischen Boten, Neutrinos und Gravitationswellen, zugänglich geworden. Diese liefern tiefere und neue Erkenntnisse über wichtige Prozesse im Universum und markiert die Geburt der Multi-Botenteilchen Astronomie: eine Form der Astronomie welche Gebrauch vom gesamten elektromagnetischen Spektrum, sowie von kosmischer Strahlung, Neutrinos und auch Gravitationswellen macht. In dieser Arbeit werden sowohl traditionelle Multi-Wellenlängen Studien, als auch neue Multi-Botenteilchen Studien präsentiert. Dabei wird gebrauch von Daten des H.E.S.S. Experiments gemacht: eine Gruppe von abbildenden Cherenkov-Teleskopen in Namibia. Im Jahr 2012 ist H.E.S.S. in die zweite Operationsphase eingetreten: ein neues, großes Teleskop wurde hinzugefügt welches es erlaubt Gamma-Strahlung mit Energien in der Größenordnung von wenigen zehn GeV zu messen.
Der Multi-Wellenlängen Ansatz wird an dem Beispiel der Galaxie NGC253 demonstriert. Diese Galaxy befindet sich in einer Episode mit erhöhter Stern-Erzeugungsrate. Die Gamma-Strahlung, welche von dieser Galaxie gemessen wurde, wird im Zusammenhang mit Informationen über dieses System diskutiert die aus Radio, Infrarot und Röntgenstrahlung gewonnen wurden. Diese geben Aufschluss über die große Population von Supernova Überresten, welche exzellente Kandidaten für Beschleuniger von kosmischer Strahlung sind. Ein Breitband Gamma-Strahlungs-Spektrum wurde mit Hilfe von H.E.S.S. und Fermi-LAT Daten zusammengesetzt. Die verbesserte Analyse der H.E.S.S. Daten erzielt eine Messung die nicht mehr von systematischen Unsicherheiten dominiert wird. Anhand des kombinierte Spektrum wird das Verhalten der kosmischen Strahlung in der Galaxy NGC253 diskutiert.
Im Gegensatz zum Langzeitverhalten von einer Galaxie wie NGC253, erweisen sich Multi-Botenteilchen Studien als besonders interessant für transiente Phänomene. Gleichzeitige Beobachtungen von Gamma-Strahlung und weiteren Botenteilchen können neue Erkenntnisse über beispielsweise Gammastrahlungsausbrüche oder die Quellen von Astrophysikalischen Neutrinos geben. Da gleichzeitige Beobachtungen in der Gammaastronomie erst seit kurzem immer wichtiger werden, stellen solche Beobachtungskampagnen aktuell eine Herausforderung dar. Um die Herausforderungen zu überwinden und gleichzeitig die wissenschaftlichen Studien, für die das neue große Teleskop von H.E.S.S. besonders geeignet ist, zu maximieren, wurde im Rahmen dieser Arbeit ein Alarmsystem für transiente Ereignisse entwickelt. Mit der Hilfe dieses neuen Systems konnten bereits viele interessante Beobachtungen durchgeführt werden. Einige der Interessantesten werden in dieser Arbeit vorgestellt und diskutiert. Darunter sind Beobachtungen von Gammastrahlungsausbrüchen mit kleinen zeitlichen Latenzen und niedriger Energieschwelle, die Nachbeobachtung eines Neutrino Kandidaten welcher räumlich mit einem Aktiven Galaxien Kern, der vorübergehend eine erhöhte Aktivität aufwies, zusammenfiel, sowie Beobachtungen vom Verschmelzen zweier Neutronensterne, was durch Gravitationswellen und einen gleichzeitigen Gammastrahlungsausbruch identifiziert werden konnte.
10.25932/publishup-42452
urn:nbn:de:kobv:517-opus4-424521
online registration
Dissertation, Universität Potsdam, 2018
US 1670
CC-BY-NC-ND - Namensnennung, nicht kommerziell, keine Bearbeitungen 4.0 International
Clemens Hoischen
eng
uncontrolled
gamma-rays
eng
uncontrolled
astronomy
eng
uncontrolled
astro-particle physics
eng
uncontrolled
multi-messenger astronomy
deu
uncontrolled
Gamma-Strahlen
deu
uncontrolled
Astronomie
deu
uncontrolled
Astroteilchenphysik
deu
uncontrolled
Multi-Botenteilchen Astronomie
Astronomie und zugeordnete Wissenschaften
open_access
Institut für Physik und Astronomie
Universität Potsdam
Universität Potsdam
https://publishup.uni-potsdam.de/files/42452/hoischen_diss.pdf