Revealing x-ray and gamma ray temporal and spectral similarities in the GRB 190829A afterglow

Abdalla, H; Aharonian, F; Benkhali, F Ait; Anguner, EO; Arcaro, C; Armand, C; Armstrong, T; Ashkar, H; Backes, M; Baghmanyan, V; Martins, V Barbosa; Barnacka, A; Barnard, M; Becherini, Y; Berge, D; Bernloehr, K; Bi, B; Bissaldi, E; Bottcher, M; Boisson, C; Bolmont, J; de Bony de Lavergne, M; Breuhaus, M; Brun, F; Brun, P; Bryan, M; Buechele, M; Bulik, T; Bylund, T; Caroff, S; Carosi, A; Casanova, S; Chand, T; Chandra, S; Chen, A; Cotter, G; Mbarubucyeye, J Damascene; Davids, ID; Davies, J; Deil, C; Devin, J; Dirson, L; 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; de Clairfontaine, G Fichet; Fontaine, G; Funk, S; Fuessling, M; Gabici, S; Gallant, YA; Giavitto, G; Giunti, L; Glawion, D; Glicenstein, JF; Grondin, M-H; Hahn, J; Haupt, M; Hermann, G; Hinton, JA; Hofmann, W; Hoischen, C; Holch, TL; Holler, M; Horbe, M; Horns, D; Huber, D; Jamrozy, M; Jankowsky, D; Jankowsky, F; Jardin-Blicq, A; Joshi, V; Jung-Richardt, I; Kasai, E; Kastendieck, MA; Katarzynski, K; Katz, U; Khangulyan, D; Khelifi, B; Klepser, S; Kluzniak, W; Komin, Nu; Konno, R; Kosack, K; Kostunin, D; Kreter, M; Lamanna, G; Lemiere, A; Lemoine-Goumard, M; Lenain, J-P; Leuschner, F; Levy, C; Lohse, T; Lypova, I; Mackey, J; Majumdar, J; Malyshev, D; Marandon, V; Marchegiani, P; Marcowith, A; Mares, A; Marx, R; Maurin, G; Meintjes, PJ; Meyer, M; Mitchell, A; Moderski, R; Mohrmann, L; Montanari, A; Moore, C; Morris, P; Moulin, E; Muller, J; Murach, T; Nakashima, K; Nayerhoda, A; de Naurois, M; Ndiyavala, H; Niemiec, J; Oakes, L; O'Brien, P; Odaka, H; Ohm, S; Olivera-Nieto, L; de OnaWilhelmi, E; Ostrowski, M; Panny, S; Panter, M; Parsons, RD; Peron, G; Peyaud, B; Piel, Q; Pita, S; Poireau, V; Noel, A Priyana; Prokhorov, DA; Prokoph, H; Puehlhofer, 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; Rowell, G; Rudak, B; Ruiz-Velasco, E; Sahakian, V; Sailer, S; Salzmann, H; Sanchez, DA; Santangelo, A; Sasaki, M; Scalici, M; Schaefer, J; Schuessler, F; Schutte, HM; Schwanke, U; Seglar-Arroyo, M; Senniappan, M; Seyffert, AS; Shafi, N; Shapopi, JNS; Shiningayamwe, K; Simoni, R; Sinha, A; Sol, H; Specovius, A; Spencer, S; Sun, L; Steenkamp, R; Stegmann, C; Steinmassl, S; Steppa, C; Takahashi, T; Tam, T; Tavernier, T; Taylor, AM; Terrier, R; Thiersen, JHE; Tiziani, D; Tluczykont, M; Tomankova, L; Tsirou, M; Tuffs, R; Uchiyama, Y; van der Walt, DJ; van Eldik, C; van Rensburg, C; van Soelen, B; Vasileiadis, G; Veh, J; Venter, C; Vincent, P; Vink, J; Voelk, HJ; Wadiasingh, Z; Wagner, SJ; Watson, J; Werner, F; White, R; Wierzcholska, A; YuWunWong,; Yusafzai, A; Zacharias, M; Zanin, R; Zargaryan, D; Zdziarski, AA; Zech, A; Zhu, SJ; Zorn, J; Zouari, S; Evans, P; Page, K

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Revealing x-ray and gamma ray temporal and spectral similarities in the GRB 190829A afterglow

journal contribution

posted on 2021-09-20, 13:53 authored by H Abdalla, F Aharonian, F Ait Benkhali, EO Anguner, C Arcaro, C Armand, T Armstrong, H Ashkar, M Backes, V Baghmanyan, V Barbosa Martins, A Barnacka, M Barnard, Y Becherini, D Berge, K Bernloehr, B Bi, E Bissaldi, M Bottcher, C Boisson, J Bolmont, M de Bony de Lavergne, M Breuhaus, F Brun, P Brun, M Bryan, M Buechele, T Bulik, T Bylund, S Caroff, A Carosi, S Casanova, T Chand, S Chandra, A Chen, G Cotter, J Damascene Mbarubucyeye, ID Davids, J Davies, C Deil, J Devin, L Dirson, A Dmytriiev, A Donath, V Doroshenko, L Dreyer, C Duffy, J Dyks, K Egberts, F Eichhorn, S Einecke, G Emery, J-P Ernenwein, K Feijen, S Fegan, A Fiasson, G Fichet de Clairfontaine, G Fontaine, S Funk, M Fuessling, S Gabici, YA Gallant, G Giavitto, L Giunti, D Glawion, JF Glicenstein, M-H Grondin, J Hahn, M Haupt, G Hermann, JA Hinton, W Hofmann, C Hoischen, TL Holch, M Holler, M Horbe, D Horns, D Huber, M Jamrozy, D Jankowsky, F Jankowsky, A Jardin-Blicq, V Joshi, I Jung-Richardt, E Kasai, MA Kastendieck, K Katarzynski, U Katz, D Khangulyan, B Khelifi, S Klepser, W Kluzniak, Nu Komin, R Konno, K Kosack, D Kostunin, M Kreter, G Lamanna, A Lemiere, M Lemoine-Goumard, J-P Lenain, F Leuschner, C Levy, T Lohse, I Lypova, J Mackey, J Majumdar, D Malyshev, V Marandon, P Marchegiani, A Marcowith, A Mares, R Marx, G Maurin, PJ Meintjes, M Meyer, A Mitchell, R Moderski, L Mohrmann, A Montanari, C Moore, P Morris, E Moulin, J Muller, T Murach, K Nakashima, A Nayerhoda, M de Naurois, H Ndiyavala, J Niemiec, L Oakes, P O'Brien, H Odaka, S Ohm, L Olivera-Nieto, E de OnaWilhelmi, M Ostrowski, S Panny, M Panter, RD Parsons, G Peron, B Peyaud, Q Piel, S Pita, V Poireau, A Priyana Noel, DA Prokhorov, H Prokoph, G Puehlhofer, M Punch, A Quirrenbach, S Raab, R Rauth, P Reichherzer, A Reimer, O Reimer, Q Remy, M Renaud, F Rieger, L Rinchiuso, C Romoli, G Rowell, B Rudak, E Ruiz-Velasco, V Sahakian, S Sailer, H Salzmann, DA Sanchez, A Santangelo, M Sasaki, M Scalici, J Schaefer, F Schuessler, HM Schutte, U Schwanke, M Seglar-Arroyo, M Senniappan, AS Seyffert, N Shafi, JNS Shapopi, K Shiningayamwe, R Simoni, A Sinha, H Sol, A Specovius, S Spencer, L Sun, R Steenkamp, C Stegmann, S Steinmassl, C Steppa, T Takahashi, T Tam, T Tavernier, AM Taylor, R Terrier, JHE Thiersen, D Tiziani, M Tluczykont, L Tomankova, M Tsirou, R Tuffs, Y Uchiyama, DJ van der Walt, C van Eldik, C van Rensburg, B van Soelen, G Vasileiadis, J Veh, C Venter, P Vincent, J Vink, HJ Voelk, Z Wadiasingh, SJ Wagner, J Watson, F Werner, R White, A Wierzcholska, YuWunWong, A Yusafzai, M Zacharias, R Zanin, D Zargaryan, AA Zdziarski, A Zech, SJ Zhu, J Zorn, S Zouari, P Evans, K Page

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.

Funding

http://dx.doi.org/10.13039/501100001647Deutsches Elektronen-Synchrotron:

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SCIENCE, 4 Jun 2021, Vol 372, Issue 6546, pp. 1081-1085, DOI: 10.1126/science.abe8560

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Department of Physics and Astronomy

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AM (Accepted Manuscript)

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SCIENCE

Volume

372

Issue

6546

Pagination

1081 - 1085

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American Association for the Advancement of Science

issn

0036-8075

eissn

1095-9203

Acceptance date

2021-04-07

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2021

Available date

2021-09-09

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https://doi.org/10.1126/science.abe8560

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United States

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English

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https://www.science.org/lookup/doi/10.1126/science.abe8560

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Science & Technology Multidisciplinary Sciences Science & Technology - Other Topics EXTRAGALACTIC BACKGROUND LIGHT BURST SYNCHROTRON RADIATION ABSORPTION EVOLUTION EMISSION

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Revealing x-ray and gamma ray temporal and spectral similarities in the GRB 190829A afterglow

Funding

http://dx.doi.org/10.13039/501100001647Deutsches Elektronen-Synchrotron:

History

Citation

Author affiliation

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Published in

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issn

eissn

Acceptance date

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Available date

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