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Different features of jets and isotropic fireballs in gamma-ray burst phase
Dong YM(董云明)1,2; Jia LW(贾兰伟)1,2; Zhao XH(赵晓红)1,2; Dong, YM (reprint author), Chinese Acad Sci, Yunnan Astron Obser, Natl Astron Observ, Kunming 650011, Peoples R China.
Source PublicationCHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
2006
Volume6Issue:1Pages:69-76
DOI10.1088/1009-9271/6/1/008
Contribution Rank第1完成单位
Indexed BySCI
KeywordGamma-rays : Bursts Gamma-rays : Theory Radiation Mechanisms : Nonthermal Relativity
AbstractWe investigated physical quantities including the spectrum, emission lilies and pulse profiles expected from a uniform jet, a spherical fireball and the 1/Gamma region (the portion of the spherical fireball with opening angle 1/Gamma) in the prompt emission phase, after taking into consideration of the Doppler effect under the fireball framework. Our study shows that: a) for these physical quantities the spherical fireball and the uniform jets do not present obvious differences, so we cannot use these to distinguish a spherical fireball from a uniform jet; b) for the spherical fireball and a uniform jet, the observed quantities mainly come from the 1/Gamma region, so we can simply use the 1/Gamma region in approximate calculations; c) broadening of emission lines is a general phenomena, which mainly comes from the curvature effect; d) the 1/Gamma region plays different roles in different frequency ranges, and the radiation from the 1/Gamma region is greater in the higher than in the lower frequencies.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN1009-9271
URL查看原文
Archive Date2006-03-20
WOS IDWOS:000235501700008
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSTANDARD ENERGY RESERVOIR ; AFTERGLOW LIGHT CURVES ; BATSE OBSERVATIONS ; SPECTRA ; PULSES ; SPECTROSCOPY ; ENERGETICS ; CATALOG ; MODEL
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/7011
Collection星系研究组
Corresponding AuthorDong, YM (reprint author), Chinese Acad Sci, Yunnan Astron Obser, Natl Astron Observ, Kunming 650011, Peoples R China.
Affiliation1.Yunnan Astronomical Observatory/National Astronomical Observatories, Chinese Academy of Sciences, Kunming 650011
2.Graduate University of Chinese Academy of Sciences, Beijing 100049
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Dong YM,Jia LW,Zhao XH,et al. Different features of jets and isotropic fireballs in gamma-ray burst phase[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2006,6(1):69-76.
APA Dong YM,Jia LW,Zhao XH,&Dong, YM .(2006).Different features of jets and isotropic fireballs in gamma-ray burst phase.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,6(1),69-76.
MLA Dong YM,et al."Different features of jets and isotropic fireballs in gamma-ray burst phase".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 6.1(2006):69-76.
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