52362
2018
2018
eng
897
907
11
2
144
article
American Institute of Physics
Melville
1
2018-08-21
--
--
Quantifying lingual coarticulation in German using mutual information
In previous research, mutual information (MI) was employed to quantify the physical information shared between consecutive phonological segments, based on electromagnetic articulography data. In this study, MI is extended to quantifying coarticulatory resistance (CR) versus overlap in German using ultrasound imaging. Two measurements are tested as input to MI: (1) the highest point on the tongue body and (2) the first coefficient of the discrete Fourier transform (DFT) of the whole tongue contour. Both measures are used to examine changes in coarticulation between two time points during the syllable span: the consonant midpoint and the vowel onset. Results corroborate previous findings reporting differences in coarticulatory overlap in German and across languages. Further, results suggest that MI used with the highest point on the tongue body captures distinctions related both to place and manner of articulation, while the first DFT coefficient does not provide any additional information regarding global (whole tongue) as opposed to local (individual articulator) aspects of CR. However, both methods capture temporal distinctions in coarticulatory resistance between the two time points. Results are discussed with respect to the potential of MI measure to provide a way of unifying coarticulation quantification methods across data collection techniques.
The journal of the Acoustical Society of America
an ultrasound study
10.1121/1.5047669
30180671
0001-4966
1520-8524
wos:2018
WOS:000443620700044
Abakarova, D (reprint author), Univ Potsdam, Dept Linguist, D-14476 Potsdam, Germany., dzhuma.abakarova@uni-potsdam.de
[DFG GZ: NO 1098/2-1]
2021-10-22T09:14:00+00:00
sword
importub
filename=package.tar
04c988ebe735f15afd644c746b6d03d9
false
true
Dzhuma Abakarova
Khalil Iskarous
Aude Noiray
Linguistik
Referiert
Department Linguistik
Import
Green Open-Access
42791
2018
2018
eng
16
8
19
article
Molecular Diversity Preservation International
Basel
1
2018-08-02
2018-08-02
--
Investigations of the Copper Peptide Hepcidin-25 by
LC-MS/MS and NMR⁺
Hepcidin-25 was identified as themain iron regulator in the human body, and it by binds to the sole iron-exporter ferroportin. Studies showed that the N-terminus of hepcidin is responsible for this interaction, the same N-terminus that encompasses a small copper(II) binding site known as the ATCUN (amino-terminal Cu(II)- and Ni(II)-binding) motif. Interestingly, this copper-binding property is largely ignored in most papers dealing with hepcidin-25. In this context, detailed investigations of the complex formed between hepcidin-25 and copper could reveal insight into its biological role. The present work focuses on metal-bound hepcidin-25 that can be considered the biologically active form. The first part is devoted to the reversed-phase chromatographic separation of copper-bound and copper-free hepcidin-25 achieved by applying basic mobile phases containing 0.1% ammonia. Further, mass spectrometry (tandemmass spectrometry (MS/MS), high-resolutionmass spectrometry (HRMS)) and nuclear magnetic resonance (NMR) spectroscopy were employed to characterize the copper-peptide. Lastly, a three-dimensional (3D)model of hepcidin-25with bound copper(II) is presented. The identification of metal complexes and potential isoforms and isomers, from which the latter usually are left undetected by mass spectrometry, led to the conclusion that complementary analytical methods are needed to characterize a peptide calibrant or referencematerial comprehensively. Quantitative nuclear magnetic resonance (qNMR), inductively-coupled plasma mass spectrometry (ICP-MS), ion-mobility spectrometry (IMS) and chiral amino acid analysis (AAA) should be considered among others.
International Journal of Molecular Sciences
10.3390/ijms19082271
1422-0067
1661-6596
2271
Universität Potsdam
PA 2018_39
472.51
<a href="http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-427926">Zweitveröffentlichung in der Schriftenreihe Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe ; 701</a>
CC-BY - Namensnennung 4.0 International
Ioana M. Abbas
Marija Vranic
Holger Hoffmann
Ahmed H. El-Khatib
María Montes-Bayón
Heiko Michael Möller
Michael G. Weller
eng
uncontrolled
hepcidin-25
eng
uncontrolled
copper
eng
uncontrolled
nickel
eng
uncontrolled
copper complex
eng
uncontrolled
ATCUN motif
eng
uncontrolled
metal complex
eng
uncontrolled
MS
eng
uncontrolled
NMR structure
eng
uncontrolled
metal peptide
eng
uncontrolled
metalloprotein
eng
uncontrolled
metallopeptide
eng
uncontrolled
isomerization
eng
uncontrolled
racemization
eng
uncontrolled
purity
eng
uncontrolled
reference material
Chemie und zugeordnete Wissenschaften
Biowissenschaften; Biologie
open_access
Institut für Chemie
Referiert
Publikationsfonds der Universität Potsdam
Open Access
40774
2018
2018
eng
113
doctoralthesis
1
--
--
--
Comparative and systemic metabolomic analysis of the model plant Arabidopsis thaliana after perturbing the essential Target of Rapamycin (TOR) pathway
online registration
Dissertation, Universität Potsdam, 2018
Mohamed Abd Allah Salem
Biowissenschaften; Biologie
Institut für Biochemie und Biologie
Universität Potsdam
Universität Potsdam
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
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
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
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
importub
filename=package.tar
7859a96d06003ce8dd490051fb7393a6
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. 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
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
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
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
sword
importub
filename=package.tar
97380c4e2a8a3c10ec02e64d943f8e8d
false
true
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
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
filename=package.tar
d38637f12732bafdbd7cc6d0ed407f33
false
true
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
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
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
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
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
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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
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
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filename=package.tar
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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
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
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
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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
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
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
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
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