Average curves of emissivity of the highest pulses in long and short gamma-ray bursts

	Average curves of emissivity of the highest pulses in long and short gamma-ray bursts
	Liang EW(梁恩维)1,2,3 ; Xie GZ(谢光中)1,2,4 ; Su CY(苏成悦)1,2,5
刊名	PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
	2002
卷号	54 期号:1 页码:1-4
关键词	cosmology : observations gamma rays : bursts gamma rays : theory methods : statistical
ISSN号	0004-6264
通讯作者	Liang, EW (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China.
产权排序	第二完成单位
英文摘要	The average curves of emissivity (ACES) of the highest pulses in long and short groups of gamma-ray bursts(GRBs) observed by BATSE on board CGRO have been studied by an alignment method and a wavelet package de-noising technique. A developed pulse-finding has been applied to identify the highest pulses from the profiles of GRBs. A sample including 116 long GRBs and 95 short GRBs was selected. The results show that the ACES of the pulses in the short group are shorter and narrower than that in the,long group. The ACES of pulses in two groups have a significant difference, which was measured by the K-S test. Compared to the ACES, the normalized ACES of the pulses in the two groups seem to be similar. We present a brief discussion of our results. Based on our results and the discussion, we conclude that two groups of bursts may be generated from different sizes of emission regions. These sources likely have an intrinsic difference. However, the emission mechanisms are the same. These results support the most accepted taxonomy of GRBs, and present an interpretation of why two groups of bursts have a notable difference in the burst's duration, but other observed properties have no distinguishable difference.
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]	GRBS ; DISTRIBUTIONS ; EVOLUTION ; WIDTH ; TIME
收录类别	SCI
原文出处	http://pasj.oxfordjournals.org/content/54/1/1
语种	英语
WOS记录号	WOS:000174212000003
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/6955]
专题	云南天文台_星系研究组
作者单位	1.unnan Observatory, Chinese Academy of Sciences, Kunming, Yunnan 650011, P. R. China 2.National Astronomical Observatories, Chinese Academy of Sciences, P. R. China 3.Physics Department, Guangxi University, Nanning, Guangxi 530004, P. R. China 4.Yunnan Astrophysics Center, Yunnan University, Kunming 650091, P. R. China 5.Department of Physics, Guangdong Industry University, Guangzhou, Guangdong 510643, P. R. China
推荐引用方式 GB/T 7714	Liang EW,Xie GZ,Su CY. Average curves of emissivity of the highest pulses in long and short gamma-ray bursts[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2002,54(1):1-4.
APA	Liang EW,Xie GZ,&Su CY.(2002).Average curves of emissivity of the highest pulses in long and short gamma-ray bursts.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,54(1),1-4.
MLA	Liang EW,et al."Average curves of emissivity of the highest pulses in long and short gamma-ray bursts".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 54.1(2002):1-4.