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Failed gamma-ray bursts and orphan afterglows
Huang, YF; Dai, ZG; Lu, T
2002
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷号332期号:3页码:735-740
通讯作者Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, LCRHEA, Beijing 100039, Peoples R China
摘要It is believed that orphan afterglow searches can help to measure the beaming angle in gamma-ray bursts (GRBs). Great expectations have been put on this method. We point out that the method is in fact not as simple as we originally expected. As a result of the baryon-rich environment that is common to almost all popular progenitor models, there should be many failed gamma-ray bursts, i.e. fireballs with Lorentz factor much less than 100-1000, but still much larger than unity. In fact, the number of failed gamma-ray bursts may even be much larger than that of successful bursts. Owing to the existence of these failed gamma-ray bursts, there should be many orphan afterglows even if GRBs are due to isotropic fireballs, then the simple discovery of orphan afterglows never means that GRBs are collimated. Unfortunately, to distinguish between a failed-GRB orphan and a jetted but off-axis GRB orphan is not an easy task. The major problem is that the trigger time is unknown. Some possible solutions to the problem are suggested.
文章类型Article
关键词stars : neutron ISM : jets and outflows gamma-rays : bursts
学科领域Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
DOI10.1046/j.1365-8711.2002.05334.x
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语种英语
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000175664400021
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被引频次:93[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/238386
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
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Huang, YF,Dai, ZG,Lu, T. Failed gamma-ray bursts and orphan afterglows[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2002,332(3):735-740.
APA Huang, YF,Dai, ZG,&Lu, T.(2002).Failed gamma-ray bursts and orphan afterglows.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,332(3),735-740.
MLA Huang, YF,et al."Failed gamma-ray bursts and orphan afterglows".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 332.3(2002):735-740.
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