Multiwavelength View of the Close-by GRB 190829A Sheds Light on Gamma-Ray Burst Physics
文献类型:期刊论文
作者 | Salafia, Om Sharan10,11,12; Ravasio, Maria Edvige10,12; Yang, Jun9; An, Tao7,8; Orienti, Monica6; Ghirlanda, Giancarlo11,12; Nava, Lara5,12; Giroletti, Marcello6; Mohan, Prashanth7; Spinelli, Riccardo4,12 |
刊名 | ASTROPHYSICAL JOURNAL LETTERS |
出版日期 | 2022-06-01 |
卷号 | 931期号:2 |
ISSN号 | 2041-8205 |
DOI | 10.3847/2041-8213/ac6c28 |
产权排序 | 第12完成单位 |
文献子类 | Article |
英文摘要 | We monitored the position of the close-by (about 370 Mpc) gamma-ray burst GRB 190829A, which originated from a massive star collapse, through very long baseline interferometry (VLBI) observations with the European VLBI Network and the Very Long Baseline Array, carrying out a total of nine observations between 9 and 117 days after the gamma-ray burst at 5 and 15 GHz, with a typical resolution of a few milliarcseconds. From a state-of-the art analysis of these data, we obtained valuable limits on the source size and expansion rate. The limits are in agreement with the size evolution entailed by a detailed modeling of the multiwavelength light curves with a forward-plus-reverse shock model, which agrees with the observations across almost 18 orders of magnitude in frequency (including the HESS data at TeV photon energies) and more than 4 orders of magnitude in time. Thanks to the multiwavelength, high-cadence coverage of the afterglow, inherent degeneracies in the afterglow model are broken to a large extent, allowing us to capture some unique physical insights; we find a low prompt emission efficiency of less than or similar to 10(-3), a low fraction of relativistic electrons in the forward shock downstream chi ( e ) < 13% (90% credible level), and a rapid decay of the magnetic field in the reverse shock downstream after the shock crossing. While our model assumes an on-axis jet, our VLBI astrometry is not sufficiently tight as to exclude any off-axis viewing angle, but we can exclude the line of sight to have been more than similar to 2 degrees away from the border of the gamma-ray-producing region based on compactness arguments. |
学科主题 | 天文学 ; 射电天文学 ; 星系与宇宙学 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
WOS关键词 | RELATIVISTIC COLLISIONLESS SHOCKS ; SELF-COMPTON EMISSION ; RADIO AFTERGLOW ; HIGH-ENERGY ; PARTICLE-ACCELERATION ; VLBI OBSERVATIONS ; BLAST-WAVE ; MODEL ; LONG ; SYNCHROTRON |
资助项目 | Italian Ministry of University and Research (MUR) grant FIGARO[1.05.06.13] ; INAF Prin 2017[1.05.01.88.06] ; MUR Prin 2017[20179ZF5KS] ; National Key R&D Programme of China[2018YFA0404603] ; NSFC[12041301] ; Youth Innovation Promotion Association of CAS ; MIUR ; PRIN 2017[20179ZF5KS] ; Spanish Ministerio de Economia y Competitividad (MINECO)[AYA2016-76012-C3-1-P] ; Spanish Ministerio de Ciencia e Innovacion[PID2019105510GB-C31] ; ICCUB (Unidad de Excelencia Maria de Maeztu 2020-2023)[CEX2019-000918-M] ; European Union's Seventh Framework Programme (FP7/2007-2013)[RI261525 NEXPReS] ; European Commission Horizon 2020 Research and Innovation Programme[730562] ; VLBA project[BA140] ; VLBA project[BO062] |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP Publishing Ltd |
WOS记录号 | WOS:000802751000001 |
资助机构 | Italian Ministry of University and Research (MUR) grant FIGARO[1.05.06.13] ; INAF Prin 2017[1.05.01.88.06] ; MUR Prin 2017[20179ZF5KS] ; National Key R&D Programme of China[2018YFA0404603] ; NSFC[12041301] ; Youth Innovation Promotion Association of CAS ; MIUR ; PRIN 2017[20179ZF5KS] ; Spanish Ministerio de Economia y Competitividad (MINECO)[AYA2016-76012-C3-1-P] ; Spanish Ministerio de Ciencia e Innovacion[PID2019105510GB-C31] ; ICCUB (Unidad de Excelencia Maria de Maeztu 2020-2023)[CEX2019-000918-M] ; European Union's Seventh Framework Programme (FP7/2007-2013)[RI261525 NEXPReS] ; European Commission Horizon 2020 Research and Innovation Programme[730562] ; VLBA project[BA140, BO062] |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/25210] |
专题 | 云南天文台_射电天文研究组 |
通讯作者 | Salafia, Om Sharan |
作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, 650216 Kunming, Yunnan, People's Republic of China 2.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023, People's Republic of China; 3.Joint Institute for VLBI ERIC, Oude Hoogeveensedijk 4, 7991 PD Dwingeloo, The Netherlands; 4.Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, Via Valleggio 11, I-22100 Como, Italy; 5.INFN–Sezione di Trieste, via Valerio 2, I-34127 Trieste (TS), Italy; 6.INAF–Istituto di Radioastronomia, via P. Gobetti 101, I-40129 Bologna, Italy; 7.Key Laboratory of Cognitive Radio and Information Processing, Guilin University of Electronic Technology, 541004, Guilin, People's Republic of China; 8.Shanghai Astronomical Observatory, Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nandan Road 80, 200030, People's Republic of China; 9.Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, SE-439 92 Onsala, Sweden; 10.Università degli Studi di Milano-Bicocca, Dipartimento di Fisica |
推荐引用方式 GB/T 7714 | Salafia, Om Sharan,Ravasio, Maria Edvige,Yang, Jun,et al. Multiwavelength View of the Close-by GRB 190829A Sheds Light on Gamma-Ray Burst Physics[J]. ASTROPHYSICAL JOURNAL LETTERS,2022,931(2). |
APA | Salafia, Om Sharan.,Ravasio, Maria Edvige.,Yang, Jun.,An, Tao.,Orienti, Monica.,...&Li ZX.(2022).Multiwavelength View of the Close-by GRB 190829A Sheds Light on Gamma-Ray Burst Physics.ASTROPHYSICAL JOURNAL LETTERS,931(2). |
MLA | Salafia, Om Sharan,et al."Multiwavelength View of the Close-by GRB 190829A Sheds Light on Gamma-Ray Burst Physics".ASTROPHYSICAL JOURNAL LETTERS 931.2(2022). |
入库方式: OAI收割
来源:云南天文台
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