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Deviation of light curves of gamma-ray burst pulses from standard forms due to the curvature effect of spherical fireballs or uniform
Tan YP(覃一平)1,2; Lu RJ(陆睿静)1,2,3; Qin, YP (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, POB 110, Kunming 650011, Peoples R China.
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2005-09-21
Volume362Issue:3Pages:1085-1098
DOI10.1111/j.1365-2966.2005.09383.x
Contribution Rank第1完成单位
Indexed BySCI
KeywordRelativity Gamma-rays : Bursts Gamma-rays : Theory
AbstractAs revealed previously, under the assumption that some pulses of gamma-ray bursts are produced by shocks in spherical fireballs or uniform jets of large opening angles, there exists a standard decay form of the profile of pulses arising from very narrow or suddenly dimming local (or intrinsic) pulses due to the relativistic curvature effect (the Doppler effect over the spherical shell surface). Profiles of pulses arising from other local pulses were previously found to possess a reverse S-feature deviation from the standard decay form. We show in this paper that, in addition to the standard decay form shown in Qin et al., there exists a marginal decay curve associated with a local delta function pulse with a monocolour radiation. We employ the sample of Kocevski, Ryde & Liang to check this prediction and find that the phenomenon of the reverse S-feature is common, when compared with both the standard decay form and the marginal decay curve. We accordingly propose to take the marginal decay curve (whose function is simple) as a criterion to check if an observed pulse could be taken as a candidate suffered from the curvature effect. We introduce two quantities A(1) and A(2) to describe the mentioned deviations within and beyond the full width at half-maximum position of the decay phase, respectively. The values of A(1) and A(2) of pulses of the sample are calculated, and the result suggests that for most of these pulses their corresponding local pulses might contain a long decay time relative to the time-scale of the curvature effect.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0035-8711
URL查看原文
Archive Date2005-09-07
WOS IDWOS:000232158300035
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordBATSE OBSERVATIONS ; TIME PROFILES ; SPECTRA ; BRIGHT ; SPECTROSCOPY ; CATALOG ; SIGNATURES ; EVOLUTION
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Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6988
Collection星系研究组
Corresponding AuthorQin, YP (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, POB 110, Kunming 650011, Peoples R China.
Affiliation1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, PO Box 110, Kunming 650011, China
2.Physics Department, Guangxi University, Nanning, Guangxi 530004, China
3.The Graduate School of the Chinese Academy of Sciences
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Tan YP,Lu RJ,Qin, YP . Deviation of light curves of gamma-ray burst pulses from standard forms due to the curvature effect of spherical fireballs or uniform[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2005,362(3):1085-1098.
APA Tan YP,Lu RJ,&Qin, YP .(2005).Deviation of light curves of gamma-ray burst pulses from standard forms due to the curvature effect of spherical fireballs or uniform.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,362(3),1085-1098.
MLA Tan YP,et al."Deviation of light curves of gamma-ray burst pulses from standard forms due to the curvature effect of spherical fireballs or uniform".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 362.3(2005):1085-1098.
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