Deviation of light curves of gamma-ray burst pulses from standard forms due to the curvature effect of spherical fireballs or uniform | |
Qin YP(覃一平)1,2; Lu RJ(陆睿静)1,2,3 | |
发表期刊 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY |
2005-09-21 | |
卷号 | 362期号:3页码:1085-1098 |
DOI | 10.1111/j.1365-2966.2005.09383.x |
产权排序 | 第1完成单位 |
收录类别 | SCI ; EI |
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 | 天文学 ; 星系与宇宙学 |
学科门类 | 理学 ; 理学::天文学 |
文章类型 | Article |
出版者 | Oxford University Press |
ISSN | 0035-8711 |
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 |
EI入藏号 | 20221411904685 |
EI主题词 | Stars |
EI分类号 | 652.1.2 Military Aircraft - 657.2 Extraterrestrial Physics and Stellar Phenomena - 921 Mathematics - 931.3 Atomic and Molecular Physics - 931.5 Gravitation, Relativity and String Theory - 932.1 High Energy Physics |
引用统计 | |
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(覃一平) |
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 |
第一作者单位 | 中国科学院云南天文台 |
通讯作者单位 | 中国科学院云南天文台 |
推荐引用方式 GB/T 7714 | Qin YP,Lu RJ. 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 | Qin YP,&Lu RJ.(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 | Qin 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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