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The Production Mechanism of the High-energy Emission Line in the Brightest Cosmic Burst

文献类型：期刊论文

作者Liu JY(刘杰英)1,2,3; Mao JR(毛基荣)2,3; Xiong, Shao-Lin4; Zhang, Yan-Qiu4,5
刊名ASTROPHYSICAL JOURNAL
出版日期2025-10-01
卷号991期号:2
ISSN号0004-637X
DOI10.3847/1538-4357/adfd53
产权排序第1完成单位
文献子类Article
英文摘要As a characteristic feature of the spectrum, the emission line carries critical information on the underlying physics of the radiation. After extensive efforts in decades, the first high-significant detection of a series of emission lines evolving from 37 MeV to 6 MeV has been detected in the ever-bright gamma-ray burst GRB 221009A. However, the physical mechanism of the entire evolutionary trend of the lines remains elusive. To provide a self-consistent interpretation, we propose a novel scenario in which the photons of the line undergo a radiation transfer process called down-Comptonization after generation by the electron-positron pair annihilation. By incorporating the gamma-ray burst dynamical evolution, we systematically reproduce the observed evolution of the central energy, width, and flux of the emission line and further impose stringent constraints on the production of high-energy emission lines in general. Our study provides a new direction to the research of extreme cosmic bursts.
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TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词GRB 221009A ; DOWN-COMPTONIZATION ; LIGHT CURVES ; PHYSICS ; AFTERGLOWS ; EVOLUTION ; SPECTRA ; MODEL ; TEV
资助项目MOST divided by National Key Research and Development Program of China (NKPs)https://doi.org/10.13039/501100012166[12273042]; MOST divided by National Key Research and Development Program of China (NKPs)https://doi.org/10.13039/501100012166[12494572]; National Natural Science Foundation of China[2021YFA0718500]; National Key R&D Program of China[XDB1160202]; Strategic Priority Research Program of Chinese Academy of Sciences[202201AT070158]; Strategic Priority Research Program of Chinese Academy of Sciences[202401AS070045]; Natural Science Foundation of Yunnan Province; Yunnan Revitalization Talent Support Program Young Talent Project[202302AN360001]; International Centre of Supernovae, Yunnan Key Laboratory[CMS-CSST-2025-A07]; CSST grant; Yunnan Revitalization Talent Support Program[XDA30050000]; Yunnan Revitalization Talent Support Program[XDB0550300]; Strategic Priority Research Program of the Chinese Academy of Sciences
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001583355100001
出版者IOP Publishing Ltd
资助机构MOST divided by National Key Research and Development Program of China (NKPs)https://doi.org/10.13039/501100012166[12273042, 12494572] ; National Natural Science Foundation of China[2021YFA0718500] ; National Key R&D Program of China[XDB1160202] ; Strategic Priority Research Program of Chinese Academy of Sciences[202201AT070158, 202401AS070045] ; Natural Science Foundation of Yunnan Province ; Yunnan Revitalization Talent Support Program Young Talent Project[202302AN360001] ; International Centre of Supernovae, Yunnan Key Laboratory[CMS-CSST-2025-A07] ; CSST grant ; Yunnan Revitalization Talent Support Program[XDA30050000, XDB0550300] ; Strategic Priority Research Program of the Chinese Academy of Sciences
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28620]  
专题云南天文台_恒星物理研究组
通讯作者Mao JR(毛基荣)
作者单位1.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, People’s Republic of China;
2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, People’s Republic of China;
3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, Yunnan Province, People’s Republic of China; jirongmao@mail.ynao.ac.cn;
4.State Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People’s Republic of China; xiongsl@ihep.ac.cn;
5.University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
推荐引用方式
GB/T 7714		 Liu JY,Mao JR,Xiong, Shao-Lin,et al. The Production Mechanism of the High-energy Emission Line in the Brightest Cosmic Burst[J]. ASTROPHYSICAL JOURNAL,2025,991(2).
APA 刘杰英,毛基荣,Xiong, Shao-Lin,&Zhang, Yan-Qiu.(2025).The Production Mechanism of the High-energy Emission Line in the Brightest Cosmic Burst.ASTROPHYSICAL JOURNAL,991(2).
MLA 刘杰英,et al."The Production Mechanism of the High-energy Emission Line in the Brightest Cosmic Burst".ASTROPHYSICAL JOURNAL 991.2(2025).

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来源：云南天文台

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