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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; Liang, EW (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China.
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2002
卷号54期号:1页码:1-4
DOI10.1093/pasj/54.1.1
产权排序第2完成单位
收录类别SCI
关键词Cosmology : Observations Gamma Rays : Bursts Gamma Rays : Theory Methods : Statistical
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.
项目资助者the Natural Science Foundation of China, and the Natural Science Foundationof Yunnan.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6264
URL查看原文
归档日期2002-03-25
WOS记录号WOS:000174212000003
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]GRBS ; DISTRIBUTIONS ; EVOLUTION ; WIDTH ; TIME
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被引频次:15[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6955
专题星系研究组
通讯作者Liang, EW (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China.
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
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GB/T 7714
Liang EW,Xie GZ,Su CY,et al. 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,&Liang, EW .(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.
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