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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; Zhang, ZB (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, POB 110, Kunming 650011, Peoples R China.
发表期刊ASTROPHYSICS AND SPACE SCIENCE
2007-07
卷号310期号:1-2页码:19-23
DOI10.1007/s10509-007-9390-2
产权排序第1完成单位
收录类别SCI
关键词Gamma-rays : Bursts Methods : Data Analysis
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.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-640X
URL查看原文
归档日期2007-06-27
WOS记录号WOS:000247635000003
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]EXTERNAL SHOCK MODEL ; INTERNAL SHOCKS ; VARIABILITY ; PULSES ; SIGNATURES ; SPECTRA ; SHELLS
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/7023
专题星系研究组
通讯作者Zhang, ZB (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, POB 110, Kunming 650011, Peoples R China.
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
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Zhang ZB,Xie GZ,Zhang, ZB . 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,&Zhang, ZB .(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.
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