The influence of inverse Compton scattering on GRB afterglows: one possible way to flatten and steepen the light curves

	The influence of inverse Compton scattering on GRB afterglows: one possible way to flatten and steepen the light curves
	Wei, DM; Lu, T
刊名	ASTRONOMY & ASTROPHYSICS
	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
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.
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]	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
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/11106]
专题	紫金山天文台_院士文集_陆埮
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
推荐引用方式 GB/T 7714	Wei, DM,Lu, T. The influence of inverse Compton scattering on GRB afterglows: one possible way to flatten and steepen the light curves[J]. ASTRONOMY & ASTROPHYSICS,2000,360(2):L13-L16.
APA	Wei, DM,&Lu, T.(2000).The influence of inverse Compton scattering on GRB afterglows: one possible way to flatten and steepen the light curves.ASTRONOMY & ASTROPHYSICS,360(2),L13-L16.
MLA	Wei, DM,et al."The influence of inverse Compton scattering on GRB afterglows: one possible way to flatten and steepen the light curves".ASTRONOMY & ASTROPHYSICS 360.2(2000):L13-L16.