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Revealing x-ray and gamma ray temporal and spectral similarities in the GRB 190829A afterglow
Abdalla, H. ; Aharonian, F. (Corresponding author) ; Ait Benkhali, F. ; Angüner, E. O. ; Arcaro, C. ; Armand, C. ; Armstrong, T. ; Ashkar, H. ; Backes, M. ; Baghmanyan, V. ; Barbosa Martins, V.DESY* ; Barnacka, A. ; Barnard, M. ; Becherini, Y. ; Berge, D.DESY* ; Bernlöhr, K. ; Bi, B. ; Bissaldi, E. ; Böttcher, M. ; Boisson, C. ; Bolmont, J.DESY* ; de Bony de Lavergne, M. ; Breuhaus, M. ; Brun, F. ; Brun, P. ; Bryan, M. ; Büchele, M. ; Bulik, T. ; Bylund, T. ; Caroff, S. ; Carosi, A. ; Casanova, S. ; Chand, T. ; Chandra, S. ; Chen, A. ; Cotter, G. ; Curyło, M. ; Damascene Mbarubucyeye, J.DESY* ; Davids, I. D. ; Davies, J. ; Deil, C. ; Devin, J. ; Dirson, L. ; Djannati-Ataï, A. ; Dmytriiev, A. ; Donath, A. ; Doroshenko, V. ; Dreyer, L. ; Duffy, C. ; Dyks, J. ; Egberts, K. ; Eichhorn, F. ; Einecke, S. ; Emery, G. ; Ernenwein, J.-P. ; Feijen, K. ; Fegan, S. ; Fiasson, A. ; Fichet de Clairfontaine, G. ; Fontaine, G. ; Funk, S. ; Füssling, M.DESY* ; Gabici, S. ; Gallant, Y. A. ; Giavitto, G.DESY* ; Giunti, L. ; Glawion, D. ; Glicenstein, J. F. ; Grondin, M.-H. ; Hahn, J. ; Haupt, M.DESY* ; Hermann, G. ; Hinton, J. A. ; Hofmann, W. ; Hoischen, C. ; Holch, T. L.DESY* ; Holler, M. ; Hörbe, M. ; Horns, D. ; Huber, D. ; Jamrozy, M. ; Jankowsky, D. ; Jankowsky, F. ; Jardin-Blicq, A. ; Joshi, V. ; Jung-Richardt, I. ; Kasai, E. ; Kastendieck, M. A. ; Katarzyński, K. ; Katz, U. ; Khangulyan, D. (Corresponding author) ; Khélifi, B. ; Klepser, S.DESY* ; Kluźniak, W. ; Komin, N. ; Konno, R.DESY* ; Kosack, K. ; Kostunin, D.DESY* ; Kreter, M. ; Lamanna, G. ; Lemière, A. ; Lemoine-Goumard, M. ; Lenain, J.-P. ; Leuschner, F. ; Levy, C. ; Lohse, T. ; Lypova, I.DESY* ; Mackey, J. ; Majumdar, J.DESY* ; Malyshev, D. ; Malyshev, D. ; Marandon, V. ; Marchegiani, P. ; Marcowith, A. ; Mares, A. ; Martí-Devesa, G. ; Marx, R. ; Maurin, G. ; Meintjes, P. J. ; Meyer, M. ; Mitchell, A. ; Moderski, R. ; Mohrmann, L. ; Montanari, A. ; Moore, C. ; Morris, P. ; Moulin, E. ; Muller, J. ; Murach, T.DESY* ; Nakashima, K. ; Nayerhoda, A. ; de Naurois, M. ; Ndiyavala, H. ; Niemiec, J. ; Oakes, L. ; O'Brien, P. ; Odaka, H. ; Ohm, S.DESY* ; Olivera-Nieto, L. ; de Ona Wilhelmi, E. M.DESY* ; Ostrowski, M. ; Panny, S. ; Panter, M. ; Parsons, R. D. ; Peron, G. ; Peyaud, B. ; Piel, Q. ; Pita, S. ; Poireau, V. ; Priyana Noel, A. ; Prokhorov, D. A. ; Prokoph, H.DESY* ; Pühlhofer, G. ; Punch, M. ; Quirrenbach, A. ; Raab, S. ; Rauth, R. ; Reichherzer, P. ; Reimer, A. ; Reimer, O. ; Remy, Q. ; Renaud, M. ; Rieger, F. ; Rinchiuso, L. ; Romoli, C. (Corresponding author) ; Rowell, G. ; Rudak, B. ; Ruiz-Velasco, E. (Corresponding author) ; Sahakian, V. ; Sailer, S. ; Salzmann, H. ; Sanchez, D. A. ; Santangelo, A. ; Sasaki, M. ; Scalici, M. ; Schäfer, J. ; Schüssler, F. (Corresponding author) ; Schutte, H. M. ; Schwanke, U. ; Seglar-Arroyo, M. ; Senniappan, M. ; Seyffert, A. S. ; Shafi, N. ; Shapopi, J. N. S. ; Shiningayamwe, K. ; Simoni, R. ; Sinha, A. ; Sol, H. ; Specovius, A. ; Spencer, S. ; Spir-Jacob, M. ; Stawarz, Ł. ; Sun, L. ; Steenkamp, R. ; Stegmann, C.DESY* ; Steinmassl, S. ; Steppa, C. ; Takahashi, T. ; Tam, T. ; Tavernier, T. ; Taylor, A. (Corresponding author)DESY* ; Terrier, R. ; Thiersen, J. H. E. ; Tiziani, D. ; Tluczykont, M. ; Tomankova, L. ; Tsirou, M. ; Tuffs, R. ; Uchiyama, Y. ; van der Walt, D. J. ; van Eldik, C. ; van Rensburg, C. ; van Soelen, B. ; Vasileiadis, G. ; Veh, J. ; Venter, C. ; Vincent, P. ; Vink, J. ; Völk, H. J. ; Wadiasingh, Z. ; Wagner, S. J. ; Watson, J. ; Werner, F. ; White, R. ; Wierzcholska, A. ; Wong, Y. W. ; Yusafzai, A. ; Zacharias, M. ; Zanin, R. ; Zargaryan, D. ; Zdziarski, A. A. ; Zech, A. ; Zhu, S. J. (Corresponding author)DESY* ; Zorn, J. ; Zouari, S. ; Żywucka, N. ; Evans, P. ; Page, K. ; H. E. S. S. Collaboration (Corresponding author)DESY*
2021
Assoc.
Washington, DC
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Please use a persistent id in citations: doi:10.1126/science.abe8560
Report No.: arXiv:2106.02510
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.
Keyword(s): gamma ray: burst ; gamma ray: VHE ; energy: high ; energy spectrum ; absorption ; spectral ; collapse ; redshift ; trigger ; photon ; HESS
Note: ISSN 1095-9203 not unique: **3 hits**.Science Vol. 372, Issue 6546, pp. 1081-1085 (2021)
Contributing Institute(s):
- Cherenkov Telescope Array (ZEU-CTA)
- High Energy Steroscopic System (ZEU-HESS)
Research Program(s):
- 613 - Matter and Radiation from the Universe (POF4-613) (POF4-613)
Experiment(s):
- Cherenkov Telescope Array
- High Energy Stereoscopic System
Database coverage:
; BIOSIS Previews ; Biological Abstracts ; Chemical Reactions ; Clarivate Analytics Master Journal List ; Current Contents - Agriculture, Biology and Environmental Sciences ; Current Contents - Life Sciences ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 40 ; Index Chemicus ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection ; Zoological Record