Delayed onset and fast rise of prompt optical-UV emission from gamma-ray bursts in molecular clouds
文献类型：期刊论文
| 作者 | Cui, Xiao-Hong1; Li, Zhuo2,3; Xin, Li-Ping1
|
| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2013 |
| 卷号 | 13期号:1页码:57-70 |
| 关键词 | radiation mechanisms: non-thermal gamma-rays: bursts dust: extinction |
| 英文摘要 | Observations imply that long gamma-ray bursts (GRBs) originate from the explosions of massive stars, therefore they may occur in the molecular clouds where their progenitors were born. We show that the prompt optical-UV emission from GRBs may be delayed due to dust extinction, which can explain the observed optical delayed onset and fast rise in GRB 080319B well. The density and the size of the molecular cloud around GRB 080319B are roughly constrained to be similar to 10(3) cm(-3) and similar to 8 pc, respectively. We also investigate other GRBs with prompt optical-UV data, and find similar values of the densities and sizes of the local molecular clouds. Future observations of prompt optical-UV emission from GRBs on a timescale of subseconds, e.g. by UFFO-Pathfinder and SVOM-GWAC, will provide more evidence and probes of the local environments of GRBs. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000314863600007 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5832]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Peking Univ, Dept Astron, Beijing 100871, Peoples R China 3.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cui, Xiao-Hong,Li, Zhuo,Xin, Li-Ping. Delayed onset and fast rise of prompt optical-UV emission from gamma-ray bursts in molecular clouds[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2013,13(1):57-70. |
| APA | Cui, Xiao-Hong,Li, Zhuo,&Xin, Li-Ping.(2013).Delayed onset and fast rise of prompt optical-UV emission from gamma-ray bursts in molecular clouds.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,13(1),57-70. |
| MLA | Cui, Xiao-Hong,et al."Delayed onset and fast rise of prompt optical-UV emission from gamma-ray bursts in molecular clouds".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 13.1(2013):57-70. |
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来源：国家天文台
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