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题名: The influence of inverse Compton scattering on GRB afterglows: one possible way to flatten and steepen the light curves
作者: Wei DaMing(韦大明); Lu Tan(陆埮)
刊名: ASTRONOMY & ASTROPHYSICS
出版日期: 2000-08-10
卷号: 360, 期号:2, 页码:L13-L16
关键词: gamma rays : bursts ; shock waves ; ISM : jets and outflows
学科分类: Astronomy & Astrophysics
文章类型: Letter
英文摘要: The fireball model of gamma-ray bursts predicted that when the energetic blast wave encountered the surrounding medium, there will be afterglow emission, and the subsequent afterglow observations appeared to confirm this prediction. In this simplest fireball model, the electrons have been accelerated to a power law energy distribution in a relativistic blast wave, then they give afterglow emission through synchrotron radiation. Up to now synchrotron radiation is believed to be the main mechanism of GRB emission, however, here we will show that under some circumstances, the inverse Compton scattering (ICS) may play an important role, and can change the light curves of GRB afterglows. Here we investigate the effects of ICS in the relativistic case (the surrounding medium density rho proportional to r(-2)) and in the non-relativistic case (for both rho = constant and rho proportional to r(-2)). We find that in the relativistic case the effect of ICS is usually important, while in the non-relativistic case, this effect is usually unimportant, unless the surrounding medium density is very high. We show that if ICS is important, then it can flatten and steepen the light curves of GRB afterglows, and this may provide the explanation for some afterglow observations.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: GAMMA-RAY-BURST ; COSMOLOGICAL FIREBALL MODEL ; 23 JANUARY 1999 ; GRB-990123 ; EVOLUTION ; REMNANTS
收录类别: SCI
语种: 英语
WOS记录号: WOS:000089331400002
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/11106
Appears in Collections:陆埮_期刊论文

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作者单位: 1.Purple Mt Observ, Chinese Acad Sci, Nanjing, Peoples R China
2.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China
3.Chinese Acad Sci, Inst High Energy Phys, Lab Cosm Ray & High Energy Astrophys, Beijing 100039, Peoples R China

Recommended Citation:
韦大明、陆 埮.The influence of inverse Compton scattering on GRB afterglows: one possible way to flatten and steepen the light curves,A&AL,2000,360(0):L13
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