| Literature DB >> 34083487 |
H Abdalla1, F Aharonian2,3,4, F Ait Benkhali3, E O Angüner5, C Arcaro6, C Armand7, T Armstrong8, H Ashkar9, M Backes1,6, V Baghmanyan10, V Barbosa Martins11, A Barnacka12, M Barnard6, Y Becherini13, D Berge11, K Bernlöhr3, B Bi14, E Bissaldi15,16, M Böttcher6, C Boisson17, J Bolmont18, M de Bony de Lavergne7, M Breuhaus3, F Brun9, P Brun9, M Bryan19, M Büchele20, T Bulik21, T Bylund13, S Caroff7, A Carosi7, S Casanova3,10, T Chand6, S Chandra6, A Chen22, G Cotter8, M Curyło21, J Damascene Mbarubucyeye11, I D Davids1, J Davies8, C Deil3, J Devin23, L Dirson24, A Djannati-Ataï23, A Dmytriiev17, A Donath3, V Doroshenko14, L Dreyer6, C Duffy25, J Dyks26, K Egberts27, F Eichhorn20, S Einecke28, G Emery18, J-P Ernenwein5, K Feijen28, S Fegan29, A Fiasson7, G Fichet de Clairfontaine17, G Fontaine29, S Funk20, M Füßling11, S Gabici23, Y A Gallant30, G Giavitto11, L Giunti9,23, D Glawion20, J F Glicenstein9, M-H Grondin31, J Hahn3, M Haupt11, G Hermann3, J A Hinton3, W Hofmann3, C Hoischen27, T L Holch11, M Holler32, M Hörbe8, D Horns24, D Huber32, M Jamrozy12, D Jankowsky20, F Jankowsky33, A Jardin-Blicq3, V Joshi20, I Jung-Richardt20, E Kasai1, M A Kastendieck24, K Katarzyński34, U Katz20, D Khangulyan35, B Khélifi23, S Klepser11, W Kluźniak26, Nu Komin22, R Konno11, K Kosack9, D Kostunin11, M Kreter6, G Lamanna7, A Lemière23, M Lemoine-Goumard31, J-P Lenain18, F Leuschner14, C Levy18, T Lohse36, I Lypova11, J Mackey37, J Majumdar11, D Malyshev20, D Malyshev20, V Marandon3, P Marchegiani22, A Marcowith30, A Mares31, G Martí-Devesa32, R Marx33,3, G Maurin7, P J Meintjes38, M Meyer20, A Mitchell3, R Moderski26, L Mohrmann20, A Montanari9, C Moore25, P Morris8, E Moulin9, J Muller29, T Murach11, K Nakashima20, A Nayerhoda10, M de Naurois29, H Ndiyavala6, J Niemiec10, L Oakes36, P O'Brien25, H Odaka39, S Ohm11, L Olivera-Nieto3, E de Ona Wilhelmi11, M Ostrowski12, S Panny32, M Panter3, R D Parsons36, G Peron3, B Peyaud9, Q Piel7, S Pita23, V Poireau7, A Priyana Noel12, D A Prokhorov19, H Prokoph11, G Pühlhofer14, M Punch13,23, A Quirrenbach33, S Raab20, R Rauth32, P Reichherzer9, A Reimer32, O Reimer32, Q Remy3, M Renaud30, F Rieger3, L Rinchiuso9, C Romoli40, G Rowell28, B Rudak26, E Ruiz-Velasco40, V Sahakian41, S Sailer3, H Salzmann14, D A Sanchez7, A Santangelo14, M Sasaki20, M Scalici14, J Schäfer20, F Schüssler42, H M Schutte6, U Schwanke36, M Seglar-Arroyo9, M Senniappan13, A S Seyffert6, N Shafi22, J N S Shapopi1, K Shiningayamwe1, R Simoni19, A Sinha23, H Sol17, A Specovius20, S Spencer8, M Spir-Jacob23, Ł Stawarz12, L Sun19, R Steenkamp1, C Stegmann27,11, S Steinmassl3, C Steppa27, T Takahashi43, T Tam44, T Tavernier9, A M Taylor45, R Terrier23, J H E Thiersen6, D Tiziani20, M Tluczykont24, L Tomankova20, M Tsirou3, R Tuffs3, Y Uchiyama46, D J van der Walt6, C van Eldik20, C van Rensburg1, B van Soelen38, G Vasileiadis30, J Veh20, C Venter6, P Vincent18, J Vink19, H J Völk3, Z Wadiasingh6, S J Wagner33, J Watson8, F Werner3, R White3, A Wierzcholska10,33, Yu Wun Wong20, A Yusafzai20, M Zacharias6,17, R Zanin3, D Zargaryan37,4, A A Zdziarski26, A Zech17, S J Zhu45, J Zorn3, S Zouari23, N Żywucka6, P Evans25, K Page25.
Abstract
Gamma-ray bursts (GRBs), which are bright flashes of gamma rays from extragalactic sources followed by fading afterglow emission, are associated with stellar core collapse events. We report the detection of very-high-energy (VHE) gamma rays from the afterglow of GRB 190829A, between 4 and 56 hours after the trigger, using the High Energy Stereoscopic System (H.E.S.S.). The low luminosity and redshift of GRB 190829A reduce both internal and external absorption, allowing determination of its intrinsic energy spectrum. Between energies of 0.18 and 3.3 tera-electron volts, this spectrum is described by a power law with photon index of 2.07 ± 0.09, similar to the x-ray spectrum. The x-ray and VHE gamma-ray light curves also show similar decay profiles. These similar characteristics in the x-ray and gamma-ray bands challenge GRB afterglow emission scenarios.Year: 2021 PMID： 34083487 DOI： 10.1126/science.abe8560
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728