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The FWHM of local pulses and the corresponding power-law index of gamma-ray burst FRED pulses
Jia LW(贾兰伟)1,2; Tan YP(覃一平)1,3; Jia, LW (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
发表期刊ASTROPHYSICAL JOURNAL
2005-09-20
卷号631期号:1页码:L25-L28
DOI10.1086/496917
产权排序第1完成单位
收录类别SCI
关键词Gamma Rays : Bursts
摘要The FWHM of gamma-ray burst (GRB) pulses is known to be related to energy by a power law. We wonder if the power-law index a is related to the corresponding local pulse width FWHM0. Seven FRED (fast rise, exponential decay) pulse GRBs are employed to study this issue; six of them were interpreted recently by the relativistic curvature effect (the Doppler effect of fireballs), and the corresponding local pulses were intensely studied. A regression analysis shows an anticorrelation between and with a slope of -0.37 +/- 0.13. This suggests log a log FWHM0 that, for the class of the GRB pulses that are the consequence of the curvature effect, the difference in the local pulse width might lead to a variation in the power-law index, in which the smaller the width, the larger the value of a. Since the number of sources employed in this analysis is small, our result is only a preliminary one that needs to be confirmed by larger samples.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
URL查看原文
归档日期2005-09-22
WOS记录号WOS:000231959400007
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]SPECTRAL EVOLUTION ; TEMPORAL STRUCTURE ; LINEAR-REGRESSION ; ENERGY-DEPENDENCE ; TIME PROFILES ; VARIABILITY ; BEPPOSAX ; BATSE ; DURATION ; EMISSION
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6989
专题星系研究组
通讯作者Jia, LW (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
作者单位1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011, China
2.Graduate School of the Chinese Academy of Sciences
3.Department of Physics, Guangxi University, Nanning, Guangxi 530004, China
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Jia LW,Tan YP,Jia, LW . The FWHM of local pulses and the corresponding power-law index of gamma-ray burst FRED pulses[J]. ASTROPHYSICAL JOURNAL,2005,631(1):L25-L28.
APA Jia LW,Tan YP,&Jia, LW .(2005).The FWHM of local pulses and the corresponding power-law index of gamma-ray burst FRED pulses.ASTROPHYSICAL JOURNAL,631(1),L25-L28.
MLA Jia LW,et al."The FWHM of local pulses and the corresponding power-law index of gamma-ray burst FRED pulses".ASTROPHYSICAL JOURNAL 631.1(2005):L25-L28.
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