Temporal Analysis of GRB Precursors in the Third Swift-BAT Catalog | |
Li LD(李联德)1,2,4; Mao JR(毛基荣)1,3,4 | |
刊名 | ASTROPHYSICAL JOURNAL |
2022-04-01 | |
卷号 | 928期号:2 |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/ac4af2 |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | We select 52 long gamma-ray bursts (GRBs) that have precursor activity in the third Swift-BAT catalog. Each episode shown in both the precursors and the main bursts is fitted by the Norris function. We systematically analyze the temporal properties for both the precursors and the main bursts. We do not find any significant difference between the temporal profile of the precursor and that of the main burst. The photon count of the precursor is related to that of the main burst. It is indicated that the precursor and the main burst might have the same physical origin, as the precursor and the main burst follow the same tau ( p )-omega relation. However, we do not find the explicit relation between the energy release of the precursor and the quiescent time. Some theoretical models, such as the fallback collapsar scenario and the jet-cocoon scenario, may be helpful to explain the GRB-precursor phenomena. |
学科主题 | 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 |
资助项目 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11673062] ; Oversea Talent Program of Yunnan Province |
WOS关键词 | GAMMA-RAY BURST ; EVOLUTION ; PULSES ; BRIGHT ; ORIGIN |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP Publishing Ltd |
WOS记录号 | WOS:000777835300001 |
资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11673062] ; Oversea Talent Program of Yunnan Province |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/25003] |
专题 | 云南天文台_中国科学院天体结构与演化重点实验室 |
通讯作者 | Mao JR(毛基荣) |
作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, 650011 Kunming, Yunnan Province, People's Republic of China; jirongmao@mail.ynao.ac.cn; 2.University of Chinese Academy of Sciences, 100049 Beijing, People's Republic of China; 3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, People's Republic of China 4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, 100012 Beijing, People's Republic of China; |
推荐引用方式 GB/T 7714 | Li LD,Mao JR. Temporal Analysis of GRB Precursors in the Third Swift-BAT Catalog[J]. ASTROPHYSICAL JOURNAL,2022,928(2). |
APA | Li LD,&Mao JR.(2022).Temporal Analysis of GRB Precursors in the Third Swift-BAT Catalog.ASTROPHYSICAL JOURNAL,928(2). |
MLA | Li LD,et al."Temporal Analysis of GRB Precursors in the Third Swift-BAT Catalog".ASTROPHYSICAL JOURNAL 928.2(2022). |
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