50973
2019
2019
eng
464
+
12
7783
575
article
Nature Publ. Group
London
1
--
2019-11-20
--
A very-high-energy component deep in the gamma-ray burst afterglow
Gamma-ray bursts (GRBs) are brief flashes of gamma-rays and are considered to be the most energetic explosive phenomena in the Universe(1). The emission from GRBs comprises a short (typically tens of seconds) and bright prompt emission, followed by a much longer afterglow phase. During the afterglow phase, the shocked outflow-produced by the interaction between the ejected matter and the circumburst medium-slows down, and a gradual decrease in brightness is observed(2). GRBs typically emit most of their energy via.-rays with energies in the kiloelectronvolt-to-megaelectronvolt range, but a few photons with energies of tens of gigaelectronvolts have been detected by space-based instruments(3). However, the origins of such high-energy (above one gigaelectronvolt) photons and the presence of very-high-energy (more than 100 gigaelectronvolts) emission have remained elusive(4). Here we report observations of very-high-energy emission in the bright GRB 180720B deep in the GRB afterglow-ten hours after the end of the prompt emission phase, when the X-ray flux had already decayed by four orders of magnitude. Two possible explanations exist for the observed radiation: inverse Compton emission and synchrotron emission of ultrarelativistic electrons. Our observations show that the energy fluxes in the X-ray and gamma-ray range and their photon indices remain comparable to each other throughout the afterglow. This discovery places distinct constraints on the GRB environment for both emission mechanisms, with the inverse Compton explanation alleviating the particle energy requirements for the emission observed at late times. The late timing of this detection has consequences for the future observations of GRBs at the highest energies.
Nature : the international weekly journal of science
10.1038/s41586-019-1743-9
31748724
0028-0836
1476-4687
wos:2019
WOS:000498812200044
Ruiz-Velasco, E (reprint author), Max Planck Inst Kernphys, Heidelberg, Germany., contact.hess@hess-experiment.eu
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); Helmholtz AssociationHelmholtz Association; Alexander von Humboldt FoundationAlexander von Humboldt Foundation; French Ministry of Higher Education, Research and Innovation; Centre national de la recherche scientifiqueCentre National de la Recherche Scientifique (CNRS) [CNRS/IN2P3]; (CNRS/INSU)Centre National de la energies alternatives (CEA)French Atomic Energy Commission; UK Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); Knut and Alice Wallenberg FoundationKnut & Alice Wallenberg Foundation; National Science Centre, Poland [2016/22/M/ST9/00382]; National Research Foundation; University of Namibia; National Commission on Research, Science & Technology of Namibia (NCRST); Austrian Federal Ministry of Education, Science and Research; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Australian Research Council (ARC)Australian Research Council; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; University of Amsterdam; EGI Federation; LAT development; US Department of Energy (DOE)United States Department of Energy (DOE); ASIItalian Space Agency; INFN (Italy), MEXT; K. A. Wallenberg FoundationKnut & Alice Wallenberg Foundation; Swedish Research CouncilSwedish Research Council; National Space Board (Sweden); INAF (Italy)Istituto Nazionale Astrofisica; CNES (France)Centre National [DE-AC02-76SF00515]
2021-06-15T12:39:11+00:00
sword
importub
filename=package.tar
1bad8215920f52ff70ec83407ce3d200
Ruiz-Velasco, E.
false
true
Hassan E. Abdalla
R. Adam
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Arcaro
C. Armand
H. Ashkar
M. Backes
V. Barbosa Martins
M. Barnard
Y. Becherini
D. Berge
K. Bernloehr
E. Bissaldi
R. Blackwell
M. Boettcher
C. Boisson
J. Bolmont
S. Bonnefoy
J. Bregeon
M. Breuhaus
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
T. Bylund
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
T. Chand
S. Chandra
A. Chen
S. Colafrancesco
M. Curylo
I. D. Davids
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Dmytriiev
A. Donath
V Doroshenko
J. Dyks
Kathrin Egberts
G. Emery
J-P Ernenwein
S. Eschbach
K. Feijen
S. Fegan
A. Fiasson
G. Fontaine
S. Funk
Matthias Fussling
S. Gabici
Y. A. Gallant
F. Gate
G. Giavitto
L. Giunti
D. Glawion
J. F. Glicenstein
D. Gottschall
M-H Grondin
J. Hahn
M. Haupt
G. Heinzelmann
G. Henri
G. Hermann
J. A. Hinton
W. Hofmann
Clemens Hoischen
T. L. Holch
M. Holler
D. Horns
D. Huber
H. Iwasaki
M. Jamrozy
D. Jankowsky
F. Jankowsky
A. Jardin-Blicq
I Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Khangulyan
B. Khelifi
J. King
S. Klepser
W. Kluzniak
Nu Komin
K. Kosack
D. Kostunin
M. Kreter
G. Lamanna
A. Lemiere
M. Lemoine-Goumard
J-P Lenain
Eva Leser
C. Levy
T. Lohse
I Lypova
J. Mackey
J. Majumdar
D. Malyshev
V Marandon
A. Marcowith
A. Mares
C. Mariaud
G. Marti-Devesa
R. Marx
G. Maurin
P. J. Meintjes
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
C. Moore
E. Moulin
J. Muller
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
E. de Ona Wilhelmi
M. Ostrowski
I Oya
M. Panter
R. D. Parsons
C. Perennes
P-O Petrucci
B. Peyaud
Q. Piel
S. Pita
V Poireau
A. Priyana Noel
D. A. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
Q. Remy
M. Renaud
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
E. Ruiz-Velasco
V Sahakian
S. Sailer
S. Saito
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
H. M. Schutte
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Senniappan
A. S. Seyffert
N. Shafi
K. Shiningayamwe
R. Simoni
A. Sinha
H. Sol
A. Specovius
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
T. Takahashi
T. Tavernier
A. M. Taylor
R. Terrier
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
P. Vincent
J. Vink
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
R. White
A. Wierzcholska
R. Yang
H. Yoneda
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
A. Ziegler
J. Zorn
N. Zywucka
F. de Palma
M. Axelsson
O. J. Roberts
Physik
Institut für Physik und Astronomie
Referiert
Import
Green Open-Access
45503
2016
2016
eng
476
+
14
531
article
Nature Publ. Group
London
HESS Collaboration
1
--
--
--
Acceleration of petaelectronvolt protons in the Galactic Centre
Galactic cosmic rays reach energies of at least a few petaelectronvolts (of the order of 1015 electronvolts). This implies that our Galaxy contains petaelectronvolt accelerators (‘PeVatrons’), but all proposed models of Galactic cosmic-ray accelerators encounter difficulties at exactly these energies. Dozens of Galactic accelerators capable of accelerating particles to energies of tens of teraelectronvolts (of the order of 1013 electronvolts) were inferred from recent γ-ray observations3. However, none of the currently known accelerators—not even the handful of shell-type supernova remnants commonly believed to supply most Galactic cosmic rays—has shown the characteristic tracers of petaelectronvolt particles, namely, power-law spectra of γ-rays extending without a cut-off or a spectral break to tens of teraelectronvolts4. Here we report deep γ-ray observations with arcminute angular resolution of the region surrounding the Galactic Centre, which show the expected tracer of the presence of petaelectronvolt protons within the central 10 parsecs of the Galaxy. We propose that the supermassive black hole Sagittarius A* is linked to this PeVatron. Sagittarius A* went through active phases in the past, as demonstrated by X-ray outbursts5and an outflow from the Galactic Centre6. Although its current rate of particle acceleration is not sufficient to provide a substantial contribution to Galactic cosmic rays, Sagittarius A* could have plausibly been more active over the last 106–107 years, and therefore should be considered as a viable alternative to supernova remnants as a source of petaelectronvolt Galactic cosmic rays.
Nature : the international weekly journal of science
10.1038/nature17147
0028-0836
1476-4687
wos2016:2019
WOS:000372701300034
Abramowski, A (reprint author), Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany., contact.hess@hess-experiment.eu
German Ministry for Education and Research (BMBF); Max Planck Society; German Research Foundation (DFG); French Ministry for Research; CNRS-IN2P3; Astroparticle Interdisciplinary Programme of the CNRS; UK Science and Technology Facilities Council (STFC); IPNP of the Charles University; Czech Science Foundation; Polish Ministry of Science and Higher Education; South African Department of Science and Technology; National Research Foundation; University of Namibia; EU FP7 Marie Curie grant [PIEF-GA-2012-332350]
importub
2020-03-22T19:05:02+00:00
filename=package.tar
b0ac94c2ed658dad86e5fd5cb79fb41c
Attila Abramowski
Felix A. Aharonian
Faical Ait Benkhali
A. G. Akhperjanian
Ekrem Oǧuzhan Angüner
Michael Backes
Arnim Balzer
Yvonne Becherini
J. Becker Tjus
David Berge
Sabrina Bernhard
K. Bernlöhr
E. Birsin
R. Blackwell
Markus Boettcher
Catherine Boisson
J. Bolmont
Pol Bordas
Johan Bregeon
Francois Brun
Pierre Brun
Mark Bryan
Tomasz Bulik
John Carr
Sabrina Casanova
N. Chakraborty
R. Chalme-Calvet
Ryan C. G. Chaves
Andrew Chen
M. Chretien
Sergio Colafrancesco
Gabriele Cologna
Jan Conrad
C. Couturier
Y. Cui
I. D. Davids
B. Degrange
C. Deil
P. deWilt
A. Djannati-Ata
W. Domainko
A. Donath
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
J-P. Ernenwein
P. Espigat
C. Farnier
S. Fegan
F. Feinstein
M. V. Fernandes
D. Fernandez
A. Fiasson
G. Fontaine
A. Foerster
M. Fuessling
S. Gabici
M. Gajdus
Y. A. Gallant
T. Garrigoux
G. Giavitto
B. Giebels
J. F. Glicenstein
D. Gottschall
A. Goyal
M-H. Grondin
M. Grudzinska
D. Hadasch
S. Haeffner
J. Hahn
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
James Anthony Hinton
W. Hofmann
P. Hofverberg
Clemens Hoischen
M. Holler
D. Horns
A. Ivascenko
A. Jacholkowska
M. Jamrozy
M. Janiak
F. Jankowsky
I. Jung-Richardt
M. A. Kastendieck
K. Katarzynski
U. Katz
D. Kerszberg
B. Khelifi
M. Kieffer
S. Klepser
D. Klochkov
W. Kluzniak
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lau
J. Lefaucheur
V. Lefranc
A. Lemiere
M. Lemoine-Goumard
J-P. Lenain
T. Lohse
A. Lopatin
C-C. Lu
R. Lui
V. Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
U. Menzler
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
K. Mora
E. Moulin
T. Murach
M. de Naurois
J. Niemiec
L. Oakes
H. Odaka
S. Oettl
S. Ohm
B. Opitz
M. Ostrowski
I. Oya
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
P-O. Petrucci
B. Peyaud
S. Pita
H. Poon
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
I. Reichardt
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
D. Salek
David M. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwemmer
A. S. Seyffert
R. Simoni
H. Sol
F. Spanier
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
Iurii Sushch
J-P. Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
M. Tluczykont
C. Trichard
R. Tuffs
K. Valerius
J. van der Walt
C. van Eldik
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
S. J. Wagner
P. Wagner
R. M. Wagner
M. Weidinger
Q. Weitzel
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
V. Zabalza
D. Zaborov
M. Zacharias
A. A. Zdziarski
Alraune Zech
F. Zefi
N. Zywucka
Institut für Physik und Astronomie
Referiert
Import
34578
2013
2013
eng
12
10
88
article
American Physical Society
College Park
HESS Collaboration
1
--
--
--
Constraints on axionlike particles with HESS from the irregularity of the PKS 2155-304 energy spectrum
Axionlike particles (ALPs) are hypothetical light (sub-eV) bosons predicted in some extensions of the Standard Model of particle physics. In astrophysical environments comprising high-energy gamma rays and turbulent magnetic fields, the existence of ALPs can modify the energy spectrum of the gamma rays for a sufficiently large coupling between ALPs and photons. This modification would take the form of an irregular behavior of the energy spectrum in a limited energy range. Data from the H. E. S. S. observations of the distant BL Lac object PKS 2155 - 304 (z = 0.116) are used to derive upper limits at the 95% C. L. on the strength of the ALP coupling to photons, g(gamma a) < 2.1 x 10(-11) GeV-1 for an ALP mass between 15 and 60 neV. The results depend on assumptions on the magnetic field around the source, which are chosen conservatively. The derived constraints apply to both light pseudoscalar and scalar bosons that couple to the electromagnetic field.
Physical review : D, Particles, fields, gravitation, and cosmology
10.1103/PhysRevD.88.102003
1550-7998
1550-2368
wos:2011-2013
102003
WOS:000327214000001
Abramowski, A (reprint author), Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-27761 Hamburg, Germany., pierre.brun@cea.fr; denis.wouters@cea.fr
German Ministry for Education and Research (BMBF); Max Planck Society;
German Research Foundation (DFG); French Ministry for Research;
CNRS-IN2P3; Astroparticle Interdisciplinary Program of the CNRS; United
Kingdom Science and Technology Facilities Council (STFC); IPNP of the
Charles University; Czech Science Foundation; Polish Ministry of Science
and Higher Education; South African Department of Science and
Technology; National Research Foundation; University of Namibia;
European Community [ERC-StG-259391]
Attila Abramowski
F. Acero
Felix A. Aharonian
Faical Ait Benkhali
A. G. Akhperjanian
Ekrem Oǧuzhan Angüner
Gisela Anton
Shangkari Balenderan
Arnim Balzer
Anna Barnacka
Yvonne Becherini
J. Becker Tjus
K. Bernlöhr
E. Birsin
E. Bissaldi
Jonathan Biteau
Catherine Boisson
J. Bolmont
Pol Bordas
J. Brucker
Francois Brun
Pierre Brun
Tomasz Bulik
Svenja Carrigan
Sabrina Casanova
M. Cerruti
Paula M. Chadwick
R. Chalme-Calvet
Ryan C. G. Chaves
A. Cheesebrough
M. Chretien
Sergio Colafrancesco
Gabriele Cologna
Jan Conrad
C. Couturier
M. Dalton
M. K. Daniel
I. D. Davids
B. Degrange
C. Deil
P. deWilt
H. J. Dickinson
A. Djannati-Ataï
W. Domainko
L. O'C. Drury
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
P. Espigat
C. Farnier
S. Fegan
F. Feinstein
M. V. Fernandes
D. Fernandez
A. Fiasson
G. Fontaine
A. Foerster
M. Fuessling
M. Gajdus
Y. A. Gallant
T. Garrigoux
H. Gast
B. Giebels
J. F. Glicenstein
D. Goering
M. -H. Grondin
M. Grudzinska
S. Haeffner
J. D. Hague
J. Hahn
J. Harris
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
James Anthony Hinton
W. Hofmann
P. Hofverberg
Markus Holler
D. Horns
A. Jacholkowska
C. Jahn
M. Jamrozy
M. Janiak
F. Jankowsky
I. Jung
M. A. Kastendieck
K. Katarzynski
U. Katz
S. Kaufmann
B. Khelifi
M. Kieffer
S. Klepser
D. Klochkov
W. Kluzniak
T. Kneiske
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lefaucheur
M. Lemoine-Goumard
J-P. Lenain
D. Lennarz
T. Lohse
A. Lopatin
C-C. Lu
V. Marandon
A. Marcowith
R. Marx
G. Maurin
N. Maxted
M. Mayer
T. J. L. McComb
M. C. Medina
J. Mehault
U. Menzler
M. Meyer
R. Moderski
M. Mohamed
E. Moulin
T. Murach
C. L. Naumann
M. de Naurois
D. Nedbal
J. Niemiec
S. J. Nolan
L. Oakes
S. Ohm
E. de Ona Wilhelmi
B. Opitz
M. Ostrowski
I. Oya
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
J. Perez
P-O. Petrucci
B. Peyaud
S. Pita
H. Poon
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
M. Raue
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
L. Rob
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
David M. Sanchez
A. Santangelo
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwarzburg
S. Schwemmer
H. Sol
G. Spengler
F. Spiess
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
Iurii Sushch
A. Szostek
J-P. Tavernet
R. Terrier
M. Tluczykont
C. Trichard
K. Valerius
C. van Eldik
G. Vasileiadis
C. Venter
A. Viana
P. Vincent
H. J. Voelk
F. Volpe
M. Vorster
S. J. Wagner
P. Wagner
M. Ward
M. Weidinger
Q. Weitzel
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
M. Zacharias
A. Zajczyk
A. A. Zdziarski
Alraune Zech
H-S. Zechlin
Institut für Physik und Astronomie
Referiert
48806
2019
2019
eng
19
627
article
EDP Sciences
Les Ulis
HESS Collaboration
1
2019-07-16
2019-07-16
--
Constraints on the emission region of 3C 279 during strong flares in 2014 and 2015 through VHE gamma-ray observations with HESS
The flat spectrum radio quasar 3C 279 is known to exhibit pronounced variability in the high-energy (100MeV < E < 100 GeV) gamma-ray band, which is continuously monitored with Fermi-LAT. During two periods of high activity in April 2014 and June 2015 target-of-opportunity observations were undertaken with the High Energy Stereoscopic System (H.E.S.S.) in the very-high-energy (VHE, E > 100 GeV) gamma-ray domain. While the observation in 2014 provides an upper limit, the observation in 2015 results in a signal with 8 : 7 sigma significance above an energy threshold of 66 GeV. No VHE variability was detected during the 2015 observations. The VHE photon spectrum is soft and described by a power-law index of 4.2 +/- 0.3. The H.E.S.S. data along with a detailed and contemporaneous multiwavelength data set provide constraints on the physical parameters of the emission region. The minimum distance of the emission region from the central black hole was estimated using two plausible geometries of the broad-line region and three potential intrinsic spectra. The emission region is confidently placed at r greater than or similar to 1 : 7 X 1017 cm from the black hole, that is beyond the assumed distance of the broad-line region. Time-dependent leptonic and lepto-hadronic one-zone models were used to describe the evolution of the 2015 flare. Neither model can fully reproduce the observations, despite testing various parameter sets. Furthermore, the H.E.S.S. data were used to derive constraints on Lorentz invariance violation given the large redshift of 3C 279.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201935704
1432-0746
wos:2019
A159
WOS:000475554500004
Zacharias, M (reprint author), North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa.; Romoli, C (reprint author), Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.; Wierzcholska, A (reprint author), Inst Fizyki Jadrowej Pan, Ul Radzikowskiego 152, PL-31342 Krakow, Poland.; Jankowsky, F; Wierzcholska, A (reprint author), Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany.
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); Helmholtz AssociationHelmholtz Association; Alexander von Humboldt FoundationAlexander von Humboldt Foundation; French Ministry of Higher Education, Research and Innovation [CNRS/IN2P3]; (CNRS/INSU)Centre National de la Recherche Scientifique (CEA)French Atomic Energy Commission; U.K. Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); Knut and Alice Wallenberg FoundationKnut & Alice Wallenberg Foundation; National Science Centre, Poland [2016/22/M/ST9/00382]; National Research Foundation; University of Namibia; National Commission on Research, Science & Technology of Namibia (NCRST); Austrian Federal Ministry of Education, Science and Research; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Australian Research Council (ARC)Australian Research Council; University of Amsterdam; EGI Federation; Polish National Agency for Academic Exchange (NAWA); National Aeronautics and Space AdministrationNational Aeronautics & Space Administration (NASA)
2021-01-06T17:20:15+00:00
sword
importub
filename=package.tar
5aac9e03e143be24c67b452264b54ba2
false
true
Hassan E. Abdalla
R. Adam
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Arcaro
C. Armand
H. Ashkar
M. Backes
V. Barbosa Martins
M. Barnard
Y. Becherini
D. Berge
K. Bernloehr
R. Blackwell
M. Böttcher
C. Boisson
J. Bolmont
S. Bonnefoy
J. Bregeon
M. Breuhaus
F. Brun
P. Brun
M. Bryan
M. Büchele
T. Bulik
T. Bylund
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
T. Chand
S. Chandra
A. Chen
S. Colafrancesco
M. Curylo
I. D. Davids
C. Deil
J. Devin
P. DeWilt
L. Dirson
A. Djannati-Ata
A. Dmytriiev
A. Donath
V Doroshenko
J. Dyks
Kathrin Egberts
G. Emery
J-P Ernenwein
S. Eschbach
K. Feijen
S. Fegan
A. Fiasson
G. Fontaine
S. Funk
Matthias Füßling
S. Gabici
Y. A. Gallant
F. Gate
G. Giavitto
D. Glawion
J. F. Glicenstein
D. Gottschall
M-H Grondin
J. Hahn
M. Haupt
G. Heinzelmann
G. Henri
G. Hermann
James Anthony Hinton
W. Hofmann
Clemens Hoischen
Tim Lukas Holch
M. Holler
D. Horns
D. Huber
H. Iwasaki
M. Jamrozy
D. Jankowsky
F. Jankowsky
A. Jardin-Blicq
I Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Khangulyan
B. Khelifi
J. King
S. Klepser
W. Kluzniak
Nu Komin
K. Kosack
D. Kostunin
M. Kraus
G. Lamanna
J. Lau
A. Lemiere
M. Lemoine-Goumard
J-P Lenain
Eva Leser
C. Levy
T. Lohse
I Lypova
J. Mackey
J. Majumdar
D. Malyshev
V Marandon
A. Marcowith
A. Mares
C. Mariaud
G. Marti-Devesa
R. Marx
G. Maurin
P. J. Meintjes
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
C. Moore
E. Moulin
J. Muller
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
E. de Ona Wilhelmi
M. Ostrowski
I Oya
M. Panter
R. D. Parsons
C. Perennes
P-O Petrucci
B. Peyaud
Q. Piel
S. Pita
V Poireau
A. Priyana Noel
D. A. Prokhorov
H. Prokoph
G. Pühlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
Q. Remy
M. Renaud
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
E. Ruiz-Velasco
V Sahakian
S. Saito
David M. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schüssler
A. Schulz
H. Schutte
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Senniappan
A. S. Seyffert
N. Shafi
K. Shiningayamwe
R. Simoni
A. Sinha
H. Sol
A. Specovius
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
T. Takahashi
T. Tavernier
A. M. Taylor
R. Terrier
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van Der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
R. White
A. Wierzcholska
R. Yang
H. Yoneda
Michael Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
A. Ziegler
J. Zorn
N. Zywucka
M. Meyer
eng
uncontrolled
radiation mechanisms: non-thermal
eng
uncontrolled
quasars: individual: 3C 279
eng
uncontrolled
galaxies: active
eng
uncontrolled
relativistic processes
Physik
Institut für Physik und Astronomie
Referiert
Import
Green Open-Access
50941
2018
2018
eng
14
620
article
EDP Sciences
Les Ulis
HESS Collaboration
1
2018-12-03
2018-12-03
--
First ground-based measurement of sub-20 GeV to 100 GeV gamma-Rays from the Vela pulsar with HESS II
Aims. We report on the measurement and investigation of pulsed high-energy y-ray emission from the Vela pulsar, PSR B0833-45, based on observations with the largest telescope of H.E.S.S., CT5, in monoscopic mode, and on data obtained with the Fermi-LAT. Methods. Data from 40.3 h of observations carried out with the H.E.S.S. II array from 2013 to 2015 have been used. A dedicated very low-threshold event reconstruction and analysis pipeline was developed to achieve the lowest possible energy threshold. Eight years of Fermi-LAT data were analysed and also used as reference to validate the CT5 telescope response model and analysis methods. Results. A pulsed gamma-ray signal at a significance level of more than 15 sigma is detected from the P2 peak of the Vela pulsar light curve. Of a total of 15 835 events, more than 6000 lie at an energy below 20 GeV, implying a significant overlap between H.E.S.S. II-CT5 and the Fermi-LAT. While the investigation of the pulsar light curve with the LAT confirms characteristics previously known up to 20 GeV in the tens of GeV energy range, CT5 data show a change in the pulse morphology of P2, i.e. an extreme sharpening of its trailing edge, together with the possible onset of a new component at 3.4 sigma significance level. Assuming a power-law model for the P2 spectrum, an excellent agreement is found for the photon indices (Gamma similar or equal to 4.1) obtained with the two telescopes above 10 GeV and an upper bound of 8% is derived on the relative offset between their energy scales. Using data from both instruments, it is shown however that the spectrum of P2 in the 10-100 GeV has a pronounced curvature; this is a confirmation of the sub-exponential cut-off form found at lower energies with the LAT. This is further supported by weak evidence of an emission above 100 GeV obtained with CT5. In contrast, converging indications are found from both CT5 and LAT data for the emergence of a hard component above 50 GeV in the leading wing (LW2) of P2, which possibly extends beyond 100 GeV. Conclusions. The detection demonstrates the performance and understanding of CT5 from 100 GeV down to the sub-20 GeV domain, i.e. unprecedented low energy for ground-based gamma-ray astronomy. The extreme sharpening of the trailing edge of the P2 peak found in the H.E.S.S. II light curve of the Vela pulsar and the possible extension beyond 100 GeV of at least one of its features, LW2, provide further constraints to models of gamma-Ray emission from pulsars.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201732153
1432-0746
wos:2018
A66
WOS:000452434100001
Venter, C (reprint author), North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa.; Holler, M (reprint author), Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria.; Tavernier, T (reprint author), Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France.; Djannati-Atai, A (reprint author), Univ Paris Diderot, Observ Paris, Sorbonne Paris Cite, CEA Irfu,APC,CNRS,IN2P3, 10 Rue Alice Domon Leonie Duquet, F-75205 Paris, France.; Giavitto, G (reprint author), DESY, D-15738 Zeuthen, Germany.
2021-06-14T05:55:27+00:00
sword
importub
filename=package.tar
7d4910317472fdd902f88d58b66c5bb0
Venter, C.
Holler, M.
Tavernier, T.
Djannati-Atai, A.
Giavitto, G.
false
true
Hassan E. Abdalla
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Arcaro
C. Armand
M. Arrieta
M. Backes
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernlohr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
T. Bylund
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
N. Chakraborty
S. Chandra
A. Chen
S. Colafrancesco
B. Condon
I. D. Davids
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Dmytriiev
A. Donath
V Doroshenko
J. Dyks
Kathrin Egberts
G. Emery
J-P Ernenwein
S. Eschbach
S. Fegan
A. Fiasson
G. Fontaine
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
F. Gate
G. Giavitto
D. Glawion
J. F. Glicenstein
D. Gottschall
M-H Grondin
J. Hahn
M. Haupt
G. Heinzelmann
G. Henri
G. Hermann
J. A. Hinton
W. Hofmann
Clemens Hoischen
T. L. Holch
M. Holler
D. Horns
D. Huber
H. Iwasaki
A. Jacholkowska
M. Jamrozy
D. Jankowsky
F. Jankowsky
L. Jouvin
I Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
J. King
S. Klepser
W. Kluzniak
Nu Komin
K. Kosack
S. Krakau
M. Kraus
P. P. Krüger
G. Lamanna
J. Lau
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J-P Lenain
Eva Leser
T. Lohse
M. Lorentz
R. Lopez-Coto
I Lypova
D. Malyshev
V Marandon
A. Marcowith
C. Mariaud
G. Marti-Devesa
R. Marx
G. Maurin
P. J. Meintjes
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I Oya
M. Padovani
M. Panter
R. D. Parsons
C. Perennes
P-O Petrucci
B. Peyaud
Q. Piel
S. Pita
V Poireau
A. Priyana Noel
D. A. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
E. Ruiz-Velasco
V Sahakian
S. Saito
D. A. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Senniappan
A. S. Seyffert
N. Shafi
I Shilon
K. Shiningayamwe
R. Simoni
A. Sinha
H. Sol
F. Spanier
A. Specovius
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
T. Takahashi
J-P Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
R. M. Wagner
R. White
A. Wierzcholska
R. Yang
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
J. Zorn
N. Zywucka
M. Kerr
S. Johnston
R. M. Shannon
eng
uncontrolled
gamma rays: stars
eng
uncontrolled
pulsars: individual: PSR B0833-45
eng
uncontrolled
radiation mechanisms: non-thermal
Astronomie und zugeordnete Wissenschaften
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
48817
2019
2019
eng
16
627
article
EDP Sciences
Les Ulis
HESS Collaboration
1
2019-07-08
2019-05-17
--
H.E.S.S. and Suzaku observations of the Vela X pulsar wind nebula
Context. Pulsar wind nebulae (PWNe) represent the most prominent population of Galactic very-high-energy gamma-ray sources and are thought to be an efficient source of leptonic cosmic rays. Vela X is a nearby middle-aged PWN, which shows bright X-ray and TeV gamma-ray emission towards an elongated structure called the cocoon. Aims. Since TeV emission is likely inverse-Compton emission of electrons, predominantly from interactions with the cosmic microwave background, while X-ray emission is synchrotron radiation of the same electrons, we aim to derive the properties of the relativistic particles and of magnetic fields with minimal modelling. Methods. We used data from the Suzaku XIS to derive the spectra from three compact regions in Vela X covering distances from 0.3 to 4 pc from the pulsar along the cocoon. We obtained gamma-ray spectra of the same regions from H.E.S.S. observations and fitted a radiative model to the multi-wavelength spectra. Results. The TeV electron spectra and magnetic field strengths are consistent within the uncertainties for the three regions, with energy densities of the order 10(-12) erg cm(-3). The data indicate the presence of a cutoff in the electron spectrum at energies of similar to 100 TeV and a magnetic field strength of similar to 6 mu G. Constraints on the presence of turbulent magnetic fields are weak. Conclusions. The pressure of TeV electrons and magnetic fields in the cocoon is dynamically negligible, requiring the presence of another dominant pressure component to balance the pulsar wind at the termination shock. Sub-TeV electrons cannot completely account for the missing pressure, which may be provided either by relativistic ions or from mixing of the ejecta with the pulsar wind. The electron spectra are consistent with expectations from transport scenarios dominated either by advection via the reverse shock or by diffusion, but for the latter the role of radiative losses near the termination shock needs to be further investigated in the light of the measured cutoff energies. Constraints on turbulent magnetic fields and the shape of the electron cutoff can be improved by spectral measurements in the energy range greater than or similar to 10 keV.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201935458
1432-0746
wos:2019
A100
WOS:000474334300001
Abdalla, H (reprint author), North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa., luigi.tibaldo@irap.omp.eu
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck Society; German Research Foundation (DFG)German Research Foundation (DFG); Alexander von Humboldt FoundationAlexander von Humboldt Foundation; Deutsche ForschungsgemeinschaftGerman Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish National Science Centre; South African Department of Science and Technology and National Research Foundation; University of Namibia; National Commission on Research, Science & Technology of Namibia (NCRST); Austrian Science Fund (FWF)Austrian Science Fund (FWF); Austrian Federal Ministry for Science, Research and Economy; Australian Research CouncilAustralian Research Council; University of Amsterdam; EGI Federation; U. K. Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); Innsbruck University; University of Adelaide; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; Namibian authorities
2021-01-07T13:54:47+00:00
sword
importub
filename=package.tar
c8ad68afa1f0334b88f725827f8482e5
false
true
CC-BY - Namensnennung 4.0 International
Hassan E. Abdalla
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Arcaro
C. Armand
M. Backes
M. Barnard
Y. Becherini
D. Berge
K. Bernloehr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
S. Bonnefoy
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
T. Bylund
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
N. Chakraborty
T. Chand
S. Chandra
R. C. G. Chaves
A. Chen
S. Colafrancesco
B. Condon
I. D. Davids
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Dmytriiev
A. Donath
V Doroshenko
J. Dyks
Kathrin Egberts
G. Emery
J-P Ernenwein
S. Eschbach
K. Feijen
S. Fegan
A. Fiasson
G. Fontaine
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
F. Gate
G. Giavitto
D. Glawion
J. F. Glicenstein
D. Gottschall
M-H Grondin
J. Hahn
M. Haupt
G. Heinzelmann
G. Henri
G. Hermann
James Anthony Hinton
W. Hofmann
Clemens Hoischen
Tim Lukas Holch
M. Holler
D. Horns
D. Huber
H. Iwasaki
A. Jacholkowska
M. Jamrozy
D. Jankowsky
F. Jankowsky
L. Jouvin
I Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Khangulyan
B. Khelifi
J. King
S. Klepser
W. Kluzniak
Nu Komin
K. Kosack
D. Kostunin
M. Kraus
G. Lamanna
J. Lau
A. Lemiere
M. Lemoine-Goumard
J-P Lenain
Eva Leser
T. Lohse
R. Lopez-Coto
I Lypova
D. Malyshev
V Marandon
A. Marcowith
C. Mariaud
G. Marti-Devesa
R. Marx
G. Maurin
N. Maxted
P. J. Meintjes
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
C. Moore
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
E. de Ona Wilhelmi
M. Ostrowski
I Oya
M. Panter
R. D. Parsons
C. Perennes
P-O Petrucci
B. Peyaud
Q. Piel
S. Pita
V Poireau
A. Priyana Noel
D. A. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
E. Ruiz-Velasco
V Sahakian
S. Saito
David M. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
H. Schutte
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Senniappan
A. S. Seyffert
N. Shafi
I Shilon
K. Shiningayamwe
R. Simoni
A. Sinha
H. Sol
A. Specovius
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
T. Takahashi
J-P Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
Luigi Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
R. White
A. Wierzcholska
R. Yang
H. Yoneda
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
A. Ziegler
J. Zorn
N. Zywucka
eng
uncontrolled
stars: winds, outflows
eng
uncontrolled
gamma rays: stars
eng
uncontrolled
radiation mechanisms: non-thermal
eng
uncontrolled
acceleration of particles
eng
uncontrolled
pulsars: individual: PSR B0833-45
Physik
Institut für Physik und Astronomie
Referiert
Import
Hybrid Open-Access
34778
2013
2013
eng
1889
1901
13
3
434
article
Oxford Univ. Press
Oxford
HESS Collaboration
1
--
--
--
HESS and Fermi-LAT discovery of gamma-rays from the blazar 1ES 1312-423
A deep observation campaign carried out by the High Energy Stereoscopic System (HESS) on Centaurus A enabled the discovery of gamma-rays from the blazar 1ES 1312-423, 2 degrees away from the radio galaxy. With a differential flux at 1 TeV of phi(1 TeV) = (1.9 +/- 0.6(stat) +/- 0.4(sys)) x 10(-13) cm(-2) s(-1) TeV-1 corresponding to 0.5 per cent of the Crab nebula differential flux and a spectral index Gamma = 2.9 +/- 0.5(stat) +/- 0.2(sys), 1ES 1312-423 is one of the faintest sources ever detected in the very high energy (E > 100 GeV) extragalactic sky. A careful analysis using three and a half years of Fermi Large Area Telescope (Fermi-LAT) data allows the discovery at high energies (E > 100 MeV) of a hard spectrum (Gamma = 1.4 +/- 0.4(stat) +/- 0.2(sys)) source coincident with 1ES 1312-423. Radio, optical, UV and X-ray observations complete the spectral energy distribution of this blazar, now covering 16 decades in energy. The emission is successfully fitted with a synchrotron self-Compton model for the non-thermal component, combined with a blackbody spectrum for the optical emission from the host galaxy.
Monthly notices of the Royal Astronomical Society
10.1093/mnras/stt1081
0035-8711
wos:2011-2013
WOS:000323639900006
Abramowski, A (reprint author), Univ Hamburg, Inst Expt Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany., yvonne.becherini@lsw.uni-heidelberg.de; biteau@in2p3.fr; david.sanchez@mpi-hd.mpg.de; jeremy.s.perkins@nasa.gov
German Ministry for Education and Research (BMBF); Max Planck Society;
French Ministry for Research; CNRS-IN2P3; Astroparticle
Interdisciplinary Programme of the CNRS; UK Particle Physics and
Astronomy Research Council (PPARC); IPNP of the Charles University;
South African Department of Science and Technology; National Research
Foundation; University of Namibia; Istituto Nazionale di Astrofisica in
Italy; Centre National d'Etudes Spatiales in France; Commonwealth of
Australia; NASA [NNH09ZDA001N]; NASA post-doctoral Programme at the
Goddard Space Flight Center
Attila Abramowski
F. Acero
Felix A. Aharonian
A. G. Akhperjanian
Ekrem Oǧuzhan Angüner
Gisela Anton
Shangkari Balenderan
Arnim Balzer
Anna Barnacka
Yvonne Becherini
J. Becker Tjus
K. Bernlöhr
E. Birsin
E. Bissaldi
Jonathan Biteau
Catherine Boisson
J. Bolmont
Pol Bordas
J. Brucker
Francois Brun
Pierre Brun
Tomasz Bulik
Svenja Carrigan
Sabrina Casanova
M. Cerruti
Paula M. Chadwick
R. Chalme-Calvet
Ryan C. G. Chaves
A. Cheesebrough
M. Chretien
Sergio Colafrancesco
Gabriele Cologna
Jan Conrad
C. Couturier
M. Dalton
M. K. Daniel
I. D. Davids
B. Degrange
C. Deil
P. deWilt
H. J. Dickinson
A. Djannati-Ataï
W. Domainko
L. O'C. Drury
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
P. Espigat
C. Farnier
S. Fegan
F. Feinstein
M. V. Fernandes
D. Fernandez
A. Fiasson
G. Fontaine
A. Foerster
M. Fuessling
M. Gajdus
Y. A. Gallant
T. Garrigoux
H. Gast
B. Giebels
J. F. Glicenstein
D. Goering
M-H. Grondin
M. Grudzinska
S. Haeffner
J. D. Hague
J. Hahn
J. Harris
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
James Anthony Hinton
W. Hofmann
P. Hofverberg
M. Holler
D. Horns
A. Jacholkowska
C. Jahn
M. Jamrozy
M. Janiak
F. Jankowsky
I. Jung
M. A. Kastendieck
K. Katarzynski
U. Katz
S. Kaufmann
B. Khelifi
M. Kieffer
S. Klepser
D. Klochkov
W. Kluzniak
T. Kneiske
D. Kolitzus
Nu. Komin
K. Kosack
S. Krakau
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lefaucheur
M. Lemoine-Goumard
J-P. Lenain
D. Lennarz
T. Lohse
A. Lopatin
C-C. Lu
V. Marandon
A. Marcowith
G. Maurin
N. Maxted
M. Mayer
T. J. L. McComb
M. C. Medina
J. Mehault
U. Menzler
M. Meyer
R. Moderski
M. Mohamed
E. Moulin
T. Murach
C. L. Naumann
M. de Naurois
D. Nedbal
J. Niemiec
S. J. Nolan
L. Oakes
S. Ohm
E. de Ona Wilhelmi
B. Opitz
M. Ostrowski
I. Oya
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
J. Perez
P-O. Petrucci
B. Peyaud
S. Pita
H. Poon
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
M. Raue
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
L. Rob
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
David M. Sanchez
A. Santangelo
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwarzburg
S. Schwemmer
H. Sol
G. Spengler
F. Spiess
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
Iurii Sushch
A. Szostek
J-P. Tavernet
R. Terrier
M. Tluczykont
C. Trichard
K. Valerius
C. van Eldik
G. Vasileiadis
C. Venter
A. Viana
P. Vincent
H. J. Voelk
F. Volpe
M. Vorster
S. J. Wagner
P. Wagner
M. Ward
M. Weidinger
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
M. Zacharias
A. Zajczyk
A. A. Zdziarski
Alraune Zech
H-S. Zechlin
J. S. Perkins
R. Ojha
J. Stevens
P. G. Edwards
M. Kadler
eng
uncontrolled
radiation mechanisms: non-thermal
eng
uncontrolled
galaxies: active
eng
uncontrolled
BL Lacertae objects: individual: 1ES 1312-423
eng
uncontrolled
galaxies: jets
eng
uncontrolled
gamma-rays: galaxies
Institut für Physik und Astronomie
Referiert
50442
2019
2019
eng
18
621
article
EDP Sciences
Les Ulis
HESS Collaboration
1
2019-01-15
--
--
Particle transport within the pulsar wind nebula HESS J1825-137
Context. We present a detailed view of the pulsar wind nebula (PWN) HESS J1825-137. We aim to constrain the mechanisms dominating the particle transport within the nebula, accounting for its anomalously large size and spectral characteristics. Aims. The nebula was studied using a deep exposure from over 12 years of H.E.S.S. I operation, together with data from H.E.S.S. II that improve the low-energy sensitivity. Enhanced energy-dependent morphological and spatially resolved spectral analyses probe the very high energy (VHE, E > 0.1 TeV) gamma-ray properties of the nebula. Methods. The nebula emission is revealed to extend out to 1.5 degrees from the pulsar, similar to 1.5 times farther than previously seen, making HESS J1825-137, with an intrinsic diameter of similar to 100 pc, potentially the largest gamma-ray PWN currently known. Characterising the strongly energy-dependent morphology of the nebula enables us to constrain the particle transport mechanisms. A dependence of the nebula extent with energy of R proportional to E alpha with alpha = -0.29 +/- 0.04(stat) +/- 0.05(sys) disfavours a pure diffusion scenario for particle transport within the nebula. The total gamma-ray flux of the nebula above 1 TeV is found to be (1.12 +/- 0.03(stat) +/- 0.25(sys)) +/- 10(-11) cm(-2) s(-1), corresponding to similar to 64% of the flux of the Crab nebula. Results. HESS J1825-137 is a PWN with clearly energy-dependent morphology at VHE gamma-ray energies. This source is used as a laboratory to investigate particle transport within intermediate-age PWNe. Based on deep observations of this highly spatially extended PWN, we produce a spectral map of the region that provides insights into the spectral variation within the nebula.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201834335
1432-0746
wos:2019
A116
WOS:000455572500001
Mitchell, AMW (reprint author), Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany.; Caroff, S (reprint author), Ecole Polytech, IN2P3, CNRS, Lab Leprince Ringuet, F-91128 Palaiseau, France.; Mitchell, AMW (reprint author), Univ Zurich, Phys Inst, Winterthurerstr 190, CH-8057 Zurich, Switzerland.
German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck SocietyFoundation CELLEX; German Research Foundation (DFG)German Research Foundation (DFG); Helmholtz AssociationHelmholtz Association; Alexander von Humboldt FoundationAlexander von Humboldt Foundation; French Ministry of Higher Education, Research and Innovation; Centre National de la Recherche Scientifique (CNRS/IN2P3); Commissariat a Energy Commission; UK Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC); Knut and Alice Wallenberg FoundationKnut & Alice Wallenberg Foundation; National Science Centre, Poland [2016/22/M/ST9/00382]; South African Department of Science and Technology; National Research Foundation; University of Namibia; National Commission on Research, Science& Technology of Namibia (NCRST); Austrian Federal Ministry of Education, Science and Research; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Australian Research Council (ARC)Australian Research Council; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; University of Amsterdam; Centre National de la Recherche Scientifique (CNRS/INSU)Centre National de la Recherche Scientifique (CNRS)
2021-04-20T12:30:01+00:00
sword
importub
filename=package.tar
1002341c58905c946a2f6e28105aa650
false
true
Hassan E. Abdalla
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
C. Arcaro
C. Armand
M. Arrieta
M. Backes
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
K. Bernloehr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
T. Bylund
M. Capasso
S. Caroff
A. Carosi
Sabrina Casanova
M. Cerruti
N. Chakraborty
T. Chand
S. Chandra
R. C. G. Chaves
A. Chen
S. Colafrancesco
B. Condon
I. D. Davids
C. Deil
J. Devin
P. deWilt
L. Dirson
A. Djannati-Atai
A. Dmytriiev
A. Donath
V Doroshenko
J. Dyks
Kathrin Egberts
G. Emery
J-P Ernenwein
S. Eschbach
S. Fegan
A. Fiasson
G. Fontaine
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
F. Gate
G. Giavitto
D. Glawion
J. F. Glicenstein
D. Gottschall
M-H Grondin
J. Hahn
M. Haupt
G. Heinzelmann
G. Henri
G. Hermann
James Anthony Hinton
W. Hofmann
Clemens Hoischen
Tim Lukas Holch
M. Holler
D. Horns
D. Huber
H. Iwasaki
A. Jacholkowska
M. Jamrozy
D. Jankowsky
F. Jankowsky
L. Jouvin
I Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
J. King
S. Klepser
W. Kluzniak
Nu Komin
K. Kosack
M. Kraus
G. Lamanna
J. Lau
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J-P Lenain
Eva Leser
T. Lohse
R. Lopez-Coto
I Lypova
D. Malyshev
V Marandon
A. Marcowith
C. Mariaud
G. Marti-Devesa
R. Marx
G. Maurin
P. J. Meintjes
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
C. Moore
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I Oya
M. Panter
R. D. Parsons
C. Perennes
P-O Petrucci
B. Peyaud
Q. Piel
S. Pita
V Poireau
A. Priyana Noel
D. A. Prokhorov
H. Prokoph
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
E. Ruiz-Velasco
V Sahakian
S. Saito
David M. Sanchez
A. Santangelo
M. Sasaki
R. Schlickeiser
F. Schussler
A. Schulz
H. Schutte
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Senniappan
A. S. Seyffert
N. Shafi
I Shilon
K. Shiningayamwe
R. Simoni
A. Sinha
H. Sol
A. Specovius
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
T. Takahashi
J-P Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
D. J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
R. M. Wagner
R. White
A. Wierzcholska
R. Yang
H. Yoneda
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
J. Zorn
N. Zywucka
eng
uncontrolled
gamma rays: general
eng
uncontrolled
acceleration of particles
eng
uncontrolled
convection
eng
uncontrolled
diffusion
eng
uncontrolled
pulsars: general
Physik
Institut für Physik und Astronomie
Referiert
Import
Bronze Open-Access
52900
2018
2018
eng
7
20
120
article
American Physical Society
College Park
HESS Collaboration
1
2018-05-15
2018-05-15
--
Search for gamma-Ray Line Signals from Dark Matter Annihilations in the Inner Galactic Halo from 10 Years of Observations with HESS
Spectral lines are among the most powerful signatures for dark matter (DM) annihilation searches in very-high-energy gamma rays. The central region of the Milky Way halo is one of the most promising targets given its large amount of DM and proximity to Earth. We report on a search for a monoenergetic spectral line from self-annihilations of DM particles in the energy range from 300 GeV to 70 TeV using a two-dimensional maximum likelihood method taking advantage of both the spectral and spatial features of the signal versus background. The analysis makes use of Galactic center observations accumulated over ten years (2004-2014) with the H.E.S.S. array of ground-based Cherenkov telescopes. No significant gamma-ray excess above the background is found. We derive upper limits on the annihilation cross section (sigma v) for monoenergetic DM lines at the level of 4 x 10(-28) cm(3) s(-1) at 1 TeV, assuming an Einasto DM profile for the Milky Way halo. For a DM mass of 1 TeV, they improve over the previous ones by a factor of 6. The present constraints are the strongest obtained so far for DM particles in the mass range 300 GeV-70 TeV. Ground-based gamma-ray observations have reached sufficient sensitivity to explore relevant velocity-averaged cross sections for DM annihilation into two gamma-ray photons at the level expected from the thermal relic density for TeV DM particles.
Physical review letters
10.1103/PhysRevLett.120.201101
29864326
0031-9007
1079-7114
wos:2018
201101
WOS:000433030700003
Abdallah, H (reprint author), North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa.
University of Namibia; German Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Max Planck SocietyMax Planck Society; German Research Foundation (DFG)German Research Foundation (DFG); Alexander von Humboldt FoundationAlexander von Humboldt Foundation; Deutsche ForschungsgemeinschaftGerman Research Foundation (DFG); French Ministry for ResearchMinistry of Research, France; CNRS-IN2P3Centre National de la Recherche Scientifique (CNRS); Astroparticle Interdisciplinary Programme of the CNRS; United Kingdom Science and Technology Facilities Council (STFC)Science & Technology Facilities Council (STFC)Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; IPNP of the Charles University; Czech Science FoundationGrant Agency of the Czech Republic; Polish National Science Centre; South African Department of Science and Technology and National Research Foundation; National Commission on Research; Science and Technology of Namibia (NCRST); Innsbruck University; Austrian Science Fund (FWF)Austrian Science Fund (FWF); Austrian Federal Ministry for Science; Research and Economy; University of Adelaide; Australian Research CouncilAustralian Research Council; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; University of Amsterdam; H.E.S.S. Virtual Organisation; national resource providers of the EGI Federation; EU FP7 Marie CurieEuropean Union (EU) [PIEF-GA-2012-332350]
2021-12-01T08:35:12+00:00
sword
importub
filename=package.tar
1de00d277eccba3a9b4d2f3a65e434ad
false
true
Hassan E. Abdalla
A. Abramowski
Felix A. Aharonian
F. Ait Benkhali
Ekrem Oǧuzhan Angüner
M. Arakawa
M. Arrieta
P. Aubert
M. Backes
A. Balzer
M. Barnard
Y. Becherini
J. Becker Tjus
D. Berge
S. Bernhard
K. Bernloehr
R. Blackwell
M. Bottcher
C. Boisson
J. Bolmont
S. Bonnefoy
Pol Bordas
J. Bregeon
F. Brun
P. Brun
M. Bryan
M. Buechele
T. Bulik
M. Capasso
S. Caroff
A. Carosi
J. Carr
Sabrina Casanova
M. Cerruti
N. Chakraborty
R. C. G. Chaves
A. Chen
J. Chevalier
S. Colafrancesco
B. Condon
J. Conrad
I. D. Davids
J. Decock
C. Deil
J. Devin
P. Dewilt
L. Dirson
A. Djannati-Atai
W. Domainko
A. Donath
K. Dutson
J. Dyks
T. Edwards
Kathrin Egberts
P. Eger
G. Emery
J-P Ernenwein
S. Eschbach
C. Farnier
S. Fegan
M. Fernandes
A. Fiasson
G. Fontaine
A. Foerster
S. Funk
M. Fuessling
S. Gabici
Y. A. Gallant
T. Garrigoux
F. Gate
G. Giavitto
B. Giebels
D. Glawion
J. F. Glicenstein
D. Gottschall
M-H Grondin
J. Hahn
M. Haupt
J. Hawkes
G. Heinzelmann
G. Henri
G. Hermann
J. A. Hinton
W. Hofmann
Clemens Hoischen
T. L. Holch
M. Holler
D. Horns
A. Ivascenko
H. Iwasaki
A. Jacholkowska
M. Jamrozy
M. Janiak
D. Jankowsky
F. Jankowsky
M. Jingo
L. Jouvin
I Jung-Richardt
M. A. Kastendieck
K. Katarzynski
M. Katsuragawa
U. Katz
D. Kerszberg
D. Khangulyan
B. Khelifi
J. King
S. Klepser
D. Klochkov
W. Kluzniak
Nu Komin
K. Kosack
S. Krakau
M. Kraus
P. P. Krueger
H. Laffon
G. Lamanna
J. Lau
J-P Lees
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J-P Lenain
Eva Leser
R. Liu
T. Lohse
M. Lorentz
R. Lopez-Coto
I Lypova
D. Malyshev
V Marandon
A. Marcowith
C. Mariaud
R. Marx
G. Maurin
N. Maxted
M. Mayer
P. J. Meintjes
M. Meyer
A. M. W. Mitchell
R. Moderski
M. Mohamed
L. Mohrmann
K. Mora
E. Moulin
T. Murach
S. Nakashima
M. de Naurois
H. Ndiyavala
F. Niederwanger
J. Niemiec
L. Oakes
H. Odaka
S. Ohm
M. Ostrowski
I Oya
M. Padovani
M. Panter
R. D. Parsons
N. W. Pekeur
G. Pelletier
C. Perennes
P-O Petrucci
B. Peyaud
Q. Piel
S. Pita
V Poireau
H. Poon
D. Prokhorov
H. Prokoph
G. Puelhofer
M. Punch
A. Quirrenbach
S. Raab
R. Rauth
A. Reimer
O. Reimer
M. Renaud
R. De Los Reyes
F. Rieger
L. Rinchiuso
C. Romoli
G. Rowell
B. Rudak
C. B. Rulten
V Sahakian
S. Saito
D. A. Sanchez
A. Santangelo
M. Sasaki
M. Schandri
R. Schlickeiser
F. Schussler
A. Schulz
U. Schwanke
S. Schwemmer
M. Seglar-Arroyo
M. Settimo
A. S. Seyffert
N. Shafi
I Shilon
K. Shiningayamwe
R. Simoni
H. Sol
F. Spanier
M. Spir-Jacob
L. Stawarz
R. Steenkamp
Christian Stegmann
Constantin Beverly Steppa
I Sushch
T. Takahashi
J-P Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
L. Tibaldo
D. Tiziani
M. Tluczykont
C. Trichard
M. Tsirou
N. Tsuji
R. Tuffs
Y. Uchiyama
J. van der Walt
C. van Eldik
C. van Rensburg
B. van Soelen
G. Vasileiadis
J. Veh
C. Venter
A. Viana
P. Vincent
J. Vink
F. Voisin
H. J. Voelk
T. Vuillaume
Z. Wadiasingh
S. J. Wagner
P. Wagner
R. M. Wagner
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
R. Yang
D. Zaborov
M. Zacharias
R. Zanin
A. A. Zdziarski
Alraune Zech
F. Zefi
A. Ziegler
J. Zorn
N. Zywucka
Physik
Institut für Physik und Astronomie
Referiert
Import
Green Open-Access
37889
2014
2014
eng
6
565
article
EDP Sciences
Les Ulis
HESS Collaboration
1
--
--
--
Search for TeV Gamma-ray emission from GRB 100621A, an extremely bright GRB in X-rays, with HESS
The long gamma-ray burst (GRB) 100621A, at the time the brightest X-ray transient ever detected by Swift-XRT in the 0.3-10 keV range, has been observed with the H.E.S.S. imaging air Cherenkov telescope array, sensitive to gamma radiation in the very-high-energy (VHE, >100 GeV) regime. Due to its relatively small redshift of z similar to 0.5, the favourable position in the southern sky and the relatively short follow-up time (<700 s after the satellite trigger) of the H.E.S.S. observations, this GRB could be within the sensitivity reach of the HESS. instrument. The analysis of the HESS. data shows no indication of emission and yields an integral flux upper limit above similar to 380 GeV of 4.2 x 10(-12) cm(-2) s(-1) s (95% confidence level), assuming a simple Band function extension model. A comparison to a spectral-temporal model, normalised to the prompt flux at sub-MeV energies, constraints the existence of a temporally extended and strong additional hard power law, as has been observed in the other bright X-ray GRB 130427A. A comparison between the HESS. upper limit and the contemporaneous energy output in X-rays constrains the ratio between the X-ray and VHE gamma-ray fluxes to be greater than 0.4. This value is an important quantity for modelling the afterglow and can constrain leptonic emission scenarios, where leptons are responsible for the X-ray emission and might produce VHE gamma rays.
Astronomy and astrophysics : an international weekly journal
10.1051/0004-6361/201322984
0004-6361
1432-0746
wos:2014
A16
WOS:000336730900016
Lennarz, D (reprint author), Max Planck Inst Kernphys, POB 103980, D-69029 Heidelberg, Germany., dirk.lennarz@gatech.edu
German Ministry for Education and Research (BMBF); Max Planck Society;
German Research Foundation (DFG); French Ministry for Research;
CNRS-IN2P3; Astroparticle Interdisciplinary Programme of the CNRS; UK
Science and Technology Facilities Council (STEC); IPNP of the Charles
University; Czech Science Foundation; Polish Ministry of Science and
Higher Education; South African Department of Science and Technology;
National Research Foundation; University of Namibia
Attila Abramowski
Felix A. Aharonian
Faical Ait Benkhali
A. G. Akhperjanian
Ekrem Oǧuzhan Angüner
Gisela Anton
Shangkari Balenderan
Arnim Balzer
Anna Barnacka
Yvonne Becherini
J. Becker Tjus
K. Bernlöhr
E. Birsin
E. Bissaldi
Jonathan Biteau
Markus Boettcher
Catherine Boisson
J. Bolmont
Pol Bordas
J. Brucker
Francois Brun
Pierre Brun
Tomasz Bulik
Svenja Carrigan
Sabrina Casanova
M. Cerruti
Paula M. Chadwick
R. Chalme-Calvet
Ryan C. G. Chaves
A. Cheesebrough
M. Chretien
Sergio Colafrancesco
Gabriele Cologna
Jan Conrad
C. Couturier
M. Dalton
M. K. Daniel
I. D. Davids
B. Degrange
C. Deil
P. deWilt
H. J. Dicldnson
A. Djannati-Ataï
W. Domainko
G. Dubus
K. Dutson
J. Dyks
M. Dyrda
T. Edwards
Kathrin Egberts
P. Eger
P. Espigat
C. Farnier
S. Fegan
F. Feinstein
M. V. Fernandes
D. Fernandez
A. Fiasson
G. Fontaine
A. Foerster
Matthias Fuessling
M. Gajdus
Y. A. Gallant
T. Garrigoux
B. Giebels
J. F. Glicenstein
M-H Grondin
M. Grudzinska
S. Haeffner
J. Hahn
J. Harris
G. Heinzelmann
G. Henri
G. Hermann
O. Hervet
A. Hillert
James Anthony Hinton
W. Hofmann
P. Hofverberg
Markus Holler
D. Horns
A. Jacholkowska
C. Jahn
M. Jamrozy
M. Janiak
F. Jankowsky
I. Jung
M. A. Kastendieck
K. Katarzynski
U. Katz
S. Kaufmann
B. Khelifi
M. Kieffer
S. Klepser
D. Klochkov
W. Kluzniak
T. Kneiske
D. Kolitzus
Nu Komin
K. Kosack
S. Krakau
F. Krayzel
P. P. Krueger
H. Laffon
G. Lamanna
J. Lefaucheur
A. Lemiere
M. Lemoine-Goumard
J-P Lenain
D. Lennarz
T. Lohse
A. Lopatin
C-C Lu
V. Marandon
A. Marcowith
R. Marx
G. Maurin
N. Maxted
M. Mayer
T. J. L. McComb
J. Mehault
U. Menzler
M. Meyer
R. Moderski
M. Mohamed
E. Moulin
T. Murach
C. L. Naumann
M. de Naurois
J. Niemiec
S. J. Nolan
L. Oakes
S. Ohm
E. de Ona Wilhelmi
B. Opitz
M. Ostrowski
I. Oya
M. Panter
R. D. Parsons
M. Paz Arribas
N. W. Pekeur
G. Pelletier
J. Perez
P-O Petrucci
B. Peyaud
S. Pita
H. Poon
G. Puehlhofer
M. Punch
A. Quirrenbach
S. Raab
M. Raue
A. Reimer
O. Reimer
M. Renaud
R. de los Reyes
F. Rieger
L. Rob
C. Romoli
S. Rosier-Lees
G. Rowell
B. Rudak
C. B. Rulten
V. Sahakian
David M. Sanchez
A. Santangelo
R. Schlickeiser
F. Schuessler
A. Schulz
U. Schwanke
S. Schwarzburg
S. Schwemmer
H. Sol
G. Spengler
F. Spies
L. Stawarz
R. Steenkamp
Christian Stegmann
F. Stinzing
K. Stycz
Iurii Sushch
A. Szostek
P. H. T. Tam
J-P Tavernet
T. Tavernier
A. M. Taylor
R. Terrier
M. Tluczykont
C. Trichard
K. Valerius
C. van Eldik
G. Vasileiadis
C. Venter
A. Viana
P. Vincent
H. J. Voelk
F. Volpe
M. Vorster
S. J. Wagner
P. Wagner
M. Ward
M. Weidinger
Q. Weitzel
R. White
A. Wierzcholska
P. Willmann
A. Woernlein
D. Wouters
M. Zacharias
A. Zajczyk
A. A. Zdziarski
Alraune Zech
H-S Zechlin
eng
uncontrolled
gamma rays: general
eng
uncontrolled
gamma-ray burst: individual: GRB 100621A
eng
uncontrolled
gamma rays: stars
eng
uncontrolled
X-rays: stars
Institut für Physik und Astronomie
Referiert