The FWHM of local pulses and the corresponding power-law index of gamma-ray burst FRED pulses

doi:10.1086/496917

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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
DOI	10.1086/496917
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
ISSN	0004-637X
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
引用统计	被引频次：7[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/114a53/6989
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
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	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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