Extremely Luminous Optical Afterglow of an Energetic Gamma-Ray Burst GRB 230204B
文献类型：期刊论文
| 作者 | Gupta, Rahul1,2; Racusin, Judith2; Lipunov, Vladimir20; Hu, Y.-D.18,19; Gulati, Ashna12,16,17; Castro-Tirado, Alberto J.11,18; Murphy, Tara16,17; Serino, Motoko10; Zhirkov, Kirill20; Shilling, S.2,9,34 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2026-02-01 |
| 卷号 | 997期号:2 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ae2794 |
| 产权排序 | 第20完成单位 |
| 文献子类 | Article |
| 英文摘要 | Robotic telescope networks play an important role in capturing early and bright optical afterglows, providing critical insights into the energetics and emission mechanisms of GRBs. In this study, we analyze GRB 230204B, an exceptionally energetic and multipulsed long GRB, detected by the Fermi Gamma-ray Burst Monitor and MAXI detectors, with an isotropic equivalent gamma-ray energy exceeding 1054 erg. Time-resolved spectral analysis reveals a transition in the prompt emission from hard (sub-photospheric-dominated) spectra during early pulses to softer (synchrotron-radiation-dominated) spectra in later pulses, indicative of a hybrid jet composition. We report the discovery and characterization of the optical afterglow using the Mobile Astronomical System of Telescope-Robots (MASTER) and Burst Observer and Optical Transient Exploring System (BOOTES) robotic telescope networks, which enabled rapid follow-up observations starting at similar to 1.3 ks post-burst. The optical luminosity at this time was exceptionally high, surpassing that of many other optically bright GRBs, such as GRB 990123 and GRB 080319B. This places the burst among the most luminous optical GRBs observed to date. Long-term radio observations extending to 335 days post-burst were conducted with the Australia Telescope Compact Array. Multiwavelength modeling, incorporating data from MASTER, BOOTES, Devasthal Optical Telescope, Swift/XRT, and radio observations, was conducted using an external interstellar medium (ISM) forward-shock top-hat jet model with afterglowpy. The results reveal a narrow and highly collimated jet with a circumburst density of n0 similar to 28.12 cm-3, kinetic energy EK similar to 4.18 x 1055 erg, and a relatively low value of & varepsilon;B = 2.14 x 10-6, indicating shock-compression of the magnetic field in the surrounding ISM. We constrained a low radiative efficiency of similar to 4.3%. This study highlights the indispensable contribution of robotic networks to early afterglow observations and advances our understanding of GRB 230204B unique characteristics and underlying jet physics. |
| 学科主题 | 天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学 |
| URL标识 | 查看原文 |
| 出版地 | No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND |
| WOS关键词 | REVERSE-SHOCK EMISSION ; X-RAY ; LIGHT CURVES ; SPECTRAL EVOLUTION ; PHOTOSPHERIC EMISSION ; RELATIVISTIC JETS ; PROMPT EMISSION ; COMPLETE SAMPLE ; SWIFT ; FERMI |
| 资助项目 | National Aeronautics and Space Administration (NASA); ISRO[DS_2B-13013(2)/1/2021-Sec.2]; ISRO[DST/ICD/BRICS/Call5/CoNMuTraMO/2023 (G)]; DST, India; NASA-GSFC; NASA High Energy Astrophysics Programs; Ministry of Education, Taiwan; Department of Science and Technology, Government of India - Australian Government; Australian Research Council Centre of Excellence for Gravitational Wave Discovery[CE230100016]; Spanish Ministry[PID2020-118491GB-I00]; Spanish Ministry[PID2023-151905OB-I00]; Junta de Andaluca[P20_010168]; Junta de Andaluca[CEX2021-001131-S]; STFC PhD studentship; Faculty of Science and Technology at Lancaster University; NASA[80GSFC21M0002]; Academy of Finland[325806]; Academy of Finland[04.89] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001672080600001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Aeronautics and Space Administration (NASA) ; ISRO[DS_2B-13013(2)/1/2021-Sec.2, DST/ICD/BRICS/Call5/CoNMuTraMO/2023 (G)] ; DST, India ; NASA-GSFC ; NASA High Energy Astrophysics Programs ; Ministry of Education, Taiwan ; Department of Science and Technology, Government of India - Australian Government ; Australian Research Council Centre of Excellence for Gravitational Wave Discovery[CE230100016] ; Spanish Ministry[PID2020-118491GB-I00, PID2023-151905OB-I00] ; Junta de Andaluca[P20_010168, CEX2021-001131-S] ; STFC PhD studentship ; Faculty of Science and Technology at Lancaster University ; NASA[80GSFC21M0002] ; Academy of Finland[325806, 04.89] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/28891]  |
| 专题 | 云南天文台_丽江天文观测站（南方基地） |
| 通讯作者 | Gupta, Rahul |
| 作者单位 | 1.NASA Postdoctoral Program Fellow; 2.Astrophysics Science Division, NASA Goddard Space Flight Center, Mail Code 661, Greenbelt, MD 20771, USA; rahulbhu.c157@gmail.com, rahul.gupta@nasa.gov; 3.Indian Institute of Science Education and Research, Thiruvananthapuram, Kerala, 695551, India; 4.High Performace Computing Centre, IISER Thiruvananthapuram, Kerala, 695551, India; 5.Graduate Institute of Astronomy, National Central University, 300 Jhongda Road, 32001, Jhongli, Taiwan; 6.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China; 7.Department of Algebra, Geometry and Topology, Facultad de Ciencias, Universidad de Málaga, Boulevard Luis Pasteur, sn, E-29071, Málaga, Spain; 8.Department of Physics, Sungkyunkwan University, Seobu-ro 2066, Suwon, 16419, Republic of Korea; 9.Department of Physics, Lancaster University, Lancaster, LA1 4YB, UK; 10.Department of Physical Sciences, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan; |
| 推荐引用方式 GB/T 7714 | Gupta, Rahul,Racusin, Judith,Lipunov, Vladimir,et al. Extremely Luminous Optical Afterglow of an Energetic Gamma-Ray Burst GRB 230204B[J]. ASTROPHYSICAL JOURNAL,2026,997(2). |
| APA | Gupta, Rahul.,Racusin, Judith.,Lipunov, Vladimir.,Hu, Y.-D..,Gulati, Ashna.,...&业凯.(2026).Extremely Luminous Optical Afterglow of an Energetic Gamma-Ray Burst GRB 230204B.ASTROPHYSICAL JOURNAL,997(2). |
| MLA | Gupta, Rahul,et al."Extremely Luminous Optical Afterglow of an Energetic Gamma-Ray Burst GRB 230204B".ASTROPHYSICAL JOURNAL 997.2(2026). |
入库方式： OAI收割
来源：云南天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。