YNAO OpenIR  > 星系研究组
Relationship between width of pulses and Lorentz factor expected from the light curve of fireball sources
Zhang FW(张富文)1,2,3; Tan YP(覃一平)1,2
Source PublicationCHINESE PHYSICS
2005-11
Volume14Issue:11Pages:2276-2286
DOI10.1088/1009-1963/14/11/023
Contribution Rank第1完成单位
Indexed BySCI ; EI
KeywordGamma-ray Bursts Gamma-rays Relativity
Abstract

Time profiles of many gamma-ray bursts consist of distinct pulses, which provides a possibility of characterizing the temporal structure of these bursts. We employ a simple model of highly symmetric fireballs to analyse the effect of the expansion speed on the light curve arising from different forms of local pulses. The relationship between the ratio r of the FWHM width of the rising phase of the light curve to that of the decaying phase and the Lorentz factor is investigated. The analysis shows that, when the rest frame radiation form is ignored, temporal profiles of the light curve arising from pulses of fireballs will not be affected by the expansion speed (that is, r is almost a constant) as long as the fireball expands relativistically. When the rest frame radiation form is taken into account, there will be a break in the curves of r - log Gamma. The location of the break depends mainly on the adopted value of the rest frame peak frequency v(0,p). One would reach almost the same result when a jet is considered. In addition, we utilize a sample of 48 individual GRB pulses to check the relationship between the ratio r and the expansion speed Gamma. We find no significant correlation between them, and this is consistent with the theoretical analysis.

Language英语
Subject Area天文学 ; 星系与宇宙学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN1009-1963
URL查看原文
Archive Date2005-12-28
WOS IDWOS:000233176500023
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS KeywordGamma-ray Bursts ; Power-density Spectra ; Internal Shock Model ; Batse Observations ; Relativistic Shells ; Temporal Behavior ; Time Profiles ; Evolution ; Bright ; Spectroscopy
EI Accession Number2005479484963
EI KeywordsGamma Rays
EI Classification Number711electromagnetic Waves - 741.1light/optics - 922.2mathematical Statistics - 931.3atomic And Molecular Physics - 931.5gravitation, Relativity And String Theory - 932.1high Energy Physics
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6986
Collection星系研究组
Corresponding AuthorZhang FW(张富文)
Affiliation1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
2.Physics Department, Guangxi University, Nanning 530004, China
3.Graduate School of The Chinese Academy of Sciences, Beijing 100049, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhang FW,Tan YP. Relationship between width of pulses and Lorentz factor expected from the light curve of fireball sources[J]. CHINESE PHYSICS,2005,14(11):2276-2286.
APA Zhang FW,&Tan YP.(2005).Relationship between width of pulses and Lorentz factor expected from the light curve of fireball sources.CHINESE PHYSICS,14(11),2276-2286.
MLA Zhang FW,et al."Relationship between width of pulses and Lorentz factor expected from the light curve of fireball sources".CHINESE PHYSICS 14.11(2005):2276-2286.
Files in This Item:
File Name/Size DocType Version Access License
Relationship between(323KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang FW(张富文)]'s Articles
[Tan YP(覃一平)]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang FW(张富文)]'s Articles
[Tan YP(覃一平)]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang FW(张富文)]'s Articles
[Tan YP(覃一平)]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Relationship between width of pulses and Lorentz factor expected from the light curve of fireball sources.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.