A comparison of temporal properties of short and long gamma-ray bursts

	A comparison of temporal properties of short and long gamma-ray bursts
	Zhang ZB(张志彬)1,2 ; Xie GZ(谢光中)1
刊名	ASTROPHYSICS AND SPACE SCIENCE
	2007-07
卷号	310 期号:1-2 页码:19-23
关键词	Gamma-rays : bursts Methods : data analysis
ISSN号	0004-640X
通讯作者	Zhang, ZB (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, POB 110, Kunming 650011, Peoples R China.
产权排序	第一完成单位
英文摘要	In this paper, we have performed a temporal analysis of single pulses from short (46) and long (51) gamma-ray bursts (GRBs) to investigate possible differences in their properties. In particular we pay detailed attention to the asymmetry of pulses. We find that the asymmetry ratio of short GRB pulses clusters around 0.81 and that these pulses are on average more symmetric than those from long GRBs, which have an average value of 0.47. In addition we note that the pulses in short GRBs display exponential rises and fast decays (ERFD) in comparison the fast rise exponential decays (FRED) pulses of long GRBs. The asymmetry ratio does not depend on the full width at half maximum (FWHM) and does not vary with energy channel. Moreover, there is a general trend for slower pulses to be more asymmetric. Finally, we deduce that the asymmetry could be used to probe the emission mechanisms of GRBs.
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]	EXTERNAL SHOCK MODEL ; INTERNAL SHOCKS ; VARIABILITY ; PULSES ; SIGNATURES ; SPECTRA ; SHELLS
收录类别	SCI
原文出处	http://link.springer.com/article/10.1007%2Fs10509-007-9390-2
语种	英语
WOS记录号	WOS:000247635000003
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/7023]
专题	云南天文台_星系研究组
作者单位	1.Yunnan Observatory, National Astronomical Observatories, Chinese Academy of Sciences, P.O., Box 110, Kunming, 650011, China 2.The Graduate School of the Chinese Academy of Sciences, Beijing, 10049, China
推荐引用方式 GB/T 7714	Zhang ZB,Xie GZ. A comparison of temporal properties of short and long gamma-ray bursts[J]. ASTROPHYSICS AND SPACE SCIENCE,2007,310(1-2):19-23.
APA	Zhang ZB,&Xie GZ.(2007).A comparison of temporal properties of short and long gamma-ray bursts.ASTROPHYSICS AND SPACE SCIENCE,310(1-2),19-23.
MLA	Zhang ZB,et al."A comparison of temporal properties of short and long gamma-ray bursts".ASTROPHYSICS AND SPACE SCIENCE 310.1-2(2007):19-23.