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

被引：128

作者：

Abdalla, H. ^{[1
]}

Aharonian, F. ^{[2
,3
,4
]}

Benkhali, F. Ait ^{[3
]}

Anguner, E. O. ^{[5
]}

Arcaro, C. ^{[6
]}

Armand, C. ^{[7
]}

Armstrong, T. ^{[8
]}

Ashkar, H. ^{[9
]}

Backes, M. ^{[1
,6
]}

Baghmanyan, V ^{[10
]}

Martins, V. Barbosa ^{[11
]}

Barnacka, A. ^{[12
]}

Barnard, M. ^{[6
]}

Becherini, Y. ^{[13
]}

Berge, D. ^{[11
]}

Bernloehr, K. ^{[3
]}

Bi, B. ^{[14
]}

Bissaldi, E. ^{[15
,16
]}

Bottcher, M. ^{[6
]}

Boisson, C. ^{[17
]}

Bolmont, J. ^{[18
]}

de Lavergne, M. de Bony ^{[7
]}

Breuhaus, M. ^{[3
]}

Brun, F. ^{[9
]}

Brun, P. ^{[9
]}

Bryan, M. ^{[19
]}

Buechele, M. ^{[20
]}

Bulik, T. ^{[21
]}

Bylund, T. ^{[13
]}

Caroff, S. ^{[7
]}

Carosi, A. ^{[7
]}

Casanova, S. ^{[3
,10
]}

Chand, T. ^{[6
]}

Chandra, S. ^{[6
]}

Chen, A. ^{[22
]}

Cotter, G. ^{[8
]}

Mbarubucyeye, J. Damascene ^{[11
]}

Davids, I. D. ^{[1
]}

Davies, J. ^{[8
]}

Deil, C. ^{[3
]}

Devin, J. ^{[23
]}

Dirson, L. ^{[24
]}

Dmytriiev, A. ^{[17
]}

Donath, A. ^{[3
]}

Doroshenko, V ^{[14
]}

Dreyer, L. ^{[6
]}

Duffy, C. ^{[25
]}

Dyks, J. ^{[26
]}

Egberts, K. ^{[27
]}

Eichhorn, F. ^{[20
]}

机构：

[1] Univ Namibia, Dept Phys, Windhoek 10005, Namibia

[2] Dublin Inst Adv Studies, Dublin 2, Ireland

[3] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany

[4] Russian Armenian Univ RAU, High Energy Astrophys Lab, Yerevan 0051, Armenia

[5] Aix Marseille Univ, Ctr Phys Particules Marseille CPPM, Ctr Natl Rech Sci CNRS, Inst Natl Phys Nucl, Marseille, France

[6] North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa

[7] Univ Grenoble Alpes, Univ Savoie Mt Blanc, Lab Annecy Phys Particules LAPP, CNRS, F-74000 Annecy, France

[8] Univ Oxford, Dept Phys, DenysWilkinson Bldg, Oxford OX1 3RH, England

[9] Univ Paris Saclay, Inst Res Fundamental Laws Universe IRFU, Commissariat Energie Atom CEA, F-91191 Gif Sur Yvette, France

[10] Polskiej Akad Nauk PAN, Inst Fizyki Jadrowej, PL-31342 Krakow, Poland

[11] Deutsch Elektronen Synchrotron DESY, D-15738 Zeuthen, Germany

[12] Uniwersytet Jagiellonski, Obserwatorium Astron, PL-30244 Krakow, Poland

[13] Linnaeus Univ, Dept Phys & Elect Engn, S-35195 Vaxjo, Sweden

[14] Univ Tubingen, Inst Astron & Astrophys, D-72076 Tubingen, Germany

[15] Politecn Bari, Dipartimento Interateneo Fis, I-70125 Bari, Italy

[16] Ist Nazl Fis Nucl, Sez Bari, I-70125 Bari, Italy

[17] Univ Paris, Univ PSL, Observ Paris, Lab Univers & Theories,CNRS, F-92190 Meudon, France

[18] Sorbonne Univ, Lab Phys Nucl & Hautes Energies LPNHE, Sorbonne Paris Cite, Univ Paris Diderot,CNRS IN2P3, F-75252 Paris, France

[19] Univ Amsterdam, Univ Amsterdam GRAPPA, Anton van Pannekoek Inst Astron, Gravitat & Astroparticle Phys, NL-1098 XH Amsterdam, Netherlands

[20] Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, D-91058 Erlangen, Germany

[21] Univ Warsaw, Astron Observ, PL-00478 Warsaw, Poland

[22] Univ Witwatersrand, Sch Phys, ZA-2050 Johannesburg, South Africa

[23] Univ Paris, CNRS, Astroparticule & Cosmol, F-75013 Paris, France

[24] Univ Hamburg, Inst Expt Phys, D-22761 Hamburg, Germany

[25] Univ Leicester, Sch Phys & Astron, Leicester LE1 7RH, Leics, England

[26] Polish Acad Sci, Nicolaus Copernicus Astron Ctr, PL-00716 Warsaw, Poland

[27] Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany

[28] Univ Adelaide, Sch Phys Sci, Adelaide, SA 5005, Australia

[29] Inst Polytech Paris, Lab Leprince Ringuet, CNRS, F-91128 Palaiseau, France

[30] Univ Montpellier, Lab Univers & Particules Montpellier, CNRS IN2P3, F-34095 Montpellier 5, France

[31] Univ Bordeaux, Ctr Etud Nucl Bordeaux Gradignan, CNRS IN2P3, F-33175 Gradignan, France

[32] Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria

[33] Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany

[34] Nicolaus Copernicus Univ, Fac Phys Astron & Informat, Inst Astron, PL-87100 Torun, Poland

[35] Rikkyo Univ, Dept Phys, Toshima Ku, Tokyo 1718501, Japan

[36] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[37] Univ Free State, Dept Phys, ZA-9300 Bloemfontein, South Africa

[38] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[39] Yerevan Phys Inst, Yerevan 375036, Armenia

[40] Univ Tokyo, Inst Adv Study UTIAS, Kavli Inst Phys & Math Universe, World Premier Int Res Ctr Initiat WPI, Chiba 2778583, Japan

[41] Sun Yat Sen Univ, Sch Phys & Astron, Guangzhou 510275, Peoples R China

来源：

SCIENCE | 2021年 / 372卷 / 6546期

基金：

日本学术振兴会; 澳大利亚研究理事会; 英国科学技术设施理事会; 新加坡国家研究基金会; 奥地利科学基金会;

关键词：

EXTRAGALACTIC BACKGROUND LIGHT; BURST; SYNCHROTRON; RADIATION; ABSORPTION; EVOLUTION; EMISSION;

D O I：

10.1126/science.abe8560

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页码：1081 / +

页数：47

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