Diverse temporal properties of gamma-ray burst afterglows

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 宇宙伽马暴、中子星及相关物理研究团组

	Diverse temporal properties of gamma-ray burst afterglows
	Wei, DM; Lu, T
刊名	ASTROPHYSICAL JOURNAL
	1998-09-20
卷号	505 期号:1 页码:252-254
关键词	gamma rays : bursts radiation mechanisms : nonthermal
ISSN号	0004-637X
英文摘要	The detection of delayed X-ray, optical, and radio emission, the "afterglow" associated with gamma-ray bursts (GRBs), is consistent with fireball models, in which the emission is produced by a relativistic expanding blast wave, driven by an expanding fireball at cosmological distances. The emission mechanisms of GRB afterglows have been discussed by many authors, and synchrotron radiation is believed to be the main mechanism. The observations show that the optical light curves of two observed gamma-ray bursts, GRB 970228 and GRB 970508, can be described by a simple power law, which seems to support the synchrotron radiation explanation. However, here we show that under some circumstances, inverse Compton scattering (ICS) may play an important role in the emission spectrum, and this may influence the temporal properties of GRB afterglows. We expect that the light curves of GRB afterglows may consist of multiple components, depending on the fireball parameters.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	COSMOLOGICAL FIREBALL MODEL ; 28 FEBRUARY 1997
收录类别	SCI
语种	英语
WOS记录号	WOS:000077777900021
公开日期	2013-02-05
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/8354]
专题	紫金山天文台_宇宙伽马暴、中子星及相关物理研究团组
作者单位	1.Acad Sinica, Purple Mt Observ, Nanjing 210008, Peoples R China 2.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China
推荐引用方式 GB/T 7714	Wei, DM,Lu, T. Diverse temporal properties of gamma-ray burst afterglows[J]. ASTROPHYSICAL JOURNAL,1998,505(1):252-254.
APA	Wei, DM,&Lu, T.(1998).Diverse temporal properties of gamma-ray burst afterglows.ASTROPHYSICAL JOURNAL,505(1),252-254.
MLA	Wei, DM,et al."Diverse temporal properties of gamma-ray burst afterglows".ASTROPHYSICAL JOURNAL 505.1(1998):252-254.