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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.
Source PublicationASTROPHYSICS AND SPACE SCIENCE
2007-07
Volume310Issue:1-2Pages:19-23
DOI10.1007/s10509-007-9390-2
Contribution Rank第1完成单位
Indexed BySCI
KeywordGamma-rays : Bursts Methods : Data Analysis
AbstractIn 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.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-640X
URL查看原文
Archive Date2007-06-27
WOS IDWOS:000247635000003
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordEXTERNAL SHOCK MODEL ; INTERNAL SHOCKS ; VARIABILITY ; PULSES ; SIGNATURES ; SPECTRA ; SHELLS
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/7023
Collection星系研究组
Corresponding AuthorZhang, ZB (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, POB 110, Kunming 650011, Peoples R China.
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
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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