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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.
Source PublicationASTROPHYSICAL JOURNAL
2005-09-20
Volume631Issue:1Pages:L25-L28
DOI10.1086/496917
Contribution Rank第1完成单位
Indexed BySCI
KeywordGamma Rays : Bursts
AbstractThe 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.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-637X
URL查看原文
Archive Date2005-09-22
WOS IDWOS:000231959400007
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSPECTRAL EVOLUTION ; TEMPORAL STRUCTURE ; LINEAR-REGRESSION ; ENERGY-DEPENDENCE ; TIME PROFILES ; VARIABILITY ; BEPPOSAX ; BATSE ; DURATION ; EMISSION
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6989
Collection星系研究组
Corresponding AuthorJia, LW (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
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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