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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.
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2005-09-21
卷号362期号:3页码:1085-1098
DOI10.1111/j.1365-2966.2005.09383.x
产权排序第1完成单位
收录类别SCI
关键词Relativity Gamma-rays : Bursts Gamma-rays : Theory
摘要As 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.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0035-8711
URL查看原文
归档日期2005-09-07
WOS记录号WOS:000232158300035
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]BATSE OBSERVATIONS ; TIME PROFILES ; SPECTRA ; BRIGHT ; SPECTROSCOPY ; CATALOG ; SIGNATURES ; EVOLUTION
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被引频次:19[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/114a53/6988
专题星系研究组
通讯作者Qin, YP (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, POB 110, Kunming 650011, Peoples R China.
作者单位1.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
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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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