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The peak energy distribution of the nu F(nu) spectra and the implications for the jet structure models of gamma-ray bursts
Liang EW(梁恩维)1,2,3; Dai, ZG1; Liang, EW (reprint author), Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China.
Source PublicationASTROPHYSICAL JOURNAL
2004-06-10
Volume608Issue:1Pages:L9-L12
DOI10.1086/422253
Contribution Rank第3完成单位
Indexed BySCI
KeywordGamma Rays : Bursts Gamma Rays : Observations Ism : Jets And Outflows Methods : Statistical
AbstractWe study the peak energy (E(p)) distribution of the nuF(nu) spectra of gamma-ray bursts (GRBs) and X-ray flashes (XRFs) with a sample of 57 bursts observed by High Energy Transient Explorer (HETE-2) French Gamma Telescope and discuss its implications for the jet structure models. Combining the observed E(p) distribution of HETE-2 GRBs/XRFs with that of BATSE GRBs, we find that the observed E(p) distribution of GRBs/XRFs is a bimodal one with peaks of less than or similar to30 keV and similar to160-250 keV. According to the recently discovered equivalent-isotropic energy-E(p) relationship, such a bimodal distribution implies a two-component structure of GRB/XRF jets. A simple simulation analysis shows that this structured jet model does roughly reproduce a bimodal distribution with peaks of similar to15 and similar to200 keV. We argue that future observations of the peak of similar to15 keV in the E(p) distribution would be evidence supporting this model. Swift, which covers an energy band of 0.2-150 keV, is expected to provide a key test for our results.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-637X
URL查看原文
Archive Date2004-08-11
WOS IDWOS:000221881600003
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordAFTERGLOW LIGHT CURVES ; 2-COMPONENT JET ; VIEWING ANGLE ; RESERVOIR ; DIVERSITY ; FLASHES
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Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6976
Collection星系研究组
Corresponding AuthorLiang, EW (reprint author), Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China.
Affiliation1.Department of Astronomy, Nanjing University, Nanjing 210093, China
2.Department of Physics, Guangxi University, Nanning 530004, China
3.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Liang EW,Dai, ZG,Liang, EW . The peak energy distribution of the nu F(nu) spectra and the implications for the jet structure models of gamma-ray bursts[J]. ASTROPHYSICAL JOURNAL,2004,608(1):L9-L12.
APA Liang EW,Dai, ZG,&Liang, EW .(2004).The peak energy distribution of the nu F(nu) spectra and the implications for the jet structure models of gamma-ray bursts.ASTROPHYSICAL JOURNAL,608(1),L9-L12.
MLA Liang EW,et al."The peak energy distribution of the nu F(nu) spectra and the implications for the jet structure models of gamma-ray bursts".ASTROPHYSICAL JOURNAL 608.1(2004):L9-L12.
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