| 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.
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| 发表期刊 | ASTROPHYSICAL JOURNAL
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| 2004-06-10 | |
| 卷号 | 608期号:1页码:L9-L12 |
| DOI | 10.1086/422253 |
| 产权排序 | 第3完成单位 |
| 收录类别 | SCI |
| 关键词 | Gamma Rays : Bursts Gamma Rays : Observations Ism : Jets And Outflows Methods : Statistical |
| 摘要 | We 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. |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0004-637X |
| URL | 查看原文 |
| 归档日期 | 2004-08-11 |
| WOS记录号 | WOS:000221881600003 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | AFTERGLOW LIGHT CURVES ; 2-COMPONENT JET ; VIEWING ANGLE ; RESERVOIR ; DIVERSITY ; FLASHES |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/6976 |
| 专题 | 星系研究组 |
| 通讯作者 | Liang, EW (reprint author), Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China. |
| 作者单位 | 1.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 |
| 第一作者单位 | 中国科学院云南天文台 |
| 推荐引用方式 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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| The Peak Energy Dist（68KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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