A Comparative Analysis of Two Peculiar Gamma-Ray Bursts: GRB 230307A and GRB 211211A

doi:10.3847/1538-4357/ad45fc

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	A Comparative Analysis of Two Peculiar Gamma-Ray Bursts: GRB 230307A and GRB 211211A
	Peng, Zhao-Yang 5; Chen, Jia-Ming 4; Mao JR(毛基荣)1,2,3
刊名	ASTROPHYSICAL JOURNAL
	2024-07-01
卷号	969 期号:1
ISSN号	0004-637X
DOI	10.3847/1538-4357/ad45fc
产权排序	第3完成单位
文献子类	Article
英文摘要	GRB 211211A is a peculiar long gamma-ray burst (GRB) with very high brightness and short burst properties. Its full light curve consists of three emission episodes, i.e., a precursor, a main burst, and an extended emission. We find that a recently detected long-duration GRB 230307A also includes the three consistent emission episodes. Furthermore, the two bursts have similar redshifts, 0.076 and 0.065, respectively. We perform a detailed temporal and spectral analysis of the two GRBs to compare their temporal and spectral properties. Our analysis shows that the two bursts share great similarities for both the whole emission and the three corresponding emission phases, which are listed as follows: (1) they have near zero spectral lag; (2) they have very short minimum variability timescale (MVT); (3) they lie in the same region of in the MVT-T 90, Amati relation and hardness-T 90 planes; (4) the three phases are quasi-thermal spectra; (5) both the peak energy and the low-energy index track the flux; (6) the time-resolved spectra are much wider than those of the blackbody predicted by the model; (7) there are strong correlations between thermal flux and total flux and the correlation coefficients, and the slopes for the corresponding stages are very consistent; and (8) the photosphere emission properties are very consistent. Other investigations and observations suggest that the two GRBs indeed belong to a short burst with a compact star merger origin. Therefore, we think that GRB 230307A and GRB 211211A are rare and similar GRBs, and the photospheric radiation can interpret their radiation mechanisms.
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
资助项目	National Key R&D Program of China[2023YFE0101200]; National Natural Science Foundation of China[12163007]; National Natural Science Foundation of China[11673062]; National Natural Science Foundation of China[12393813]; Key Laboratory of Colleges and Universities in Yunnan Province for High-energy Astrophysics; National Astronomical Observatories Yunnan Normal University Astronomical Science Popularization Education Base; CSST[CMS-CSST-2021-A0]; Yunnan Revitalization Talent Support Program
WOS关键词	GRAVITATIONAL-WAVES ; SPECTRAL PROPERTIES ; UNUSUAL SUPERNOVA ; EMISSION ; JET ; VARIABILITY ; WIDTH ; CLASSIFICATION ; TRANSITION ; ACCRETION
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:001254848500001
资助机构	National Key R&D Program of China[2023YFE0101200] ; National Natural Science Foundation of China[12163007, 11673062, 12393813] ; Key Laboratory of Colleges and Universities in Yunnan Province for High-energy Astrophysics ; National Astronomical Observatories Yunnan Normal University Astronomical Science Popularization Education Base ; CSST[CMS-CSST-2021-A0] ; Yunnan Revitalization Talent Support Program
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ynao.ac.cn/handle/114a53/27430]
专题	云南天文台_中国科学院天体结构与演化重点实验室
作者单位	1.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, People's Republic of China 2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100101, People's Republic of China; 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, People's Republic of China; 4.School of Physics and Astronomy, Yunnan University, Kunming 650500, People's Republic of China; 5.College of Physics and Electronics Information, Yunnan Normal University, Kunming 650500, People's Republic of China;
推荐引用方式 GB/T 7714	Peng, Zhao-Yang,Chen, Jia-Ming,Mao JR. A Comparative Analysis of Two Peculiar Gamma-Ray Bursts: GRB 230307A and GRB 211211A[J]. ASTROPHYSICAL JOURNAL,2024,969(1).
APA	Peng, Zhao-Yang,Chen, Jia-Ming,&毛基荣.(2024).A Comparative Analysis of Two Peculiar Gamma-Ray Bursts: GRB 230307A and GRB 211211A.ASTROPHYSICAL JOURNAL,969(1).
MLA	Peng, Zhao-Yang,et al."A Comparative Analysis of Two Peculiar Gamma-Ray Bursts: GRB 230307A and GRB 211211A".ASTROPHYSICAL JOURNAL 969.1(2024).