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

	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
刊名	ASTROPHYSICAL JOURNAL
	2005-09-20
卷号	631 期号:1 页码:L25-L28
关键词	gamma rays : bursts
ISSN号	0004-637X
通讯作者	Jia, LW (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
产权排序	第一完成单位
英文摘要	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.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	SPECTRAL EVOLUTION ; TEMPORAL STRUCTURE ; LINEAR-REGRESSION ; ENERGY-DEPENDENCE ; TIME PROFILES ; VARIABILITY ; BEPPOSAX ; BATSE ; DURATION ; EMISSION
收录类别	SCI
原文出处	http://iopscience.iop.org/1538-4357/631/1/L25/
语种	英语
WOS记录号	WOS:000231959400007
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/6989]
专题	云南天文台_星系研究组
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
推荐引用方式 GB/T 7714	Jia LW,Tan YP. 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.(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.