| Spectral hardness evolution of gamma-ray bursts due to the Doppler effect of fireballs | |
Lu, RJ1; Peng CY(彭朝阳)2,3 ; Dong, W1; Lu, RJ (reprint author), Guangxi Univ, Phys Sci & Technol Coll, Nanning 530004, Peoples R China.
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| 发表期刊 | ASTROPHYSICAL JOURNAL
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| 2007-07-10 | |
| 卷号 | 663期号:2页码:1110-1117 |
| DOI | 10.1086/518732 |
| 产权排序 | 第2完成单位 |
| 收录类别 | SCI |
| 关键词 | Gamma Rays : Bursts Gamma Rays : Theory Relativity |
| 摘要 | We have investigated the evolution of observed spectral hardness E-p ( where E-p is the maximum of the nu F-nu spectrum) based on the model of highly symmetric expanding fireballs, where the Doppler effect of the expanding fireball surface is the key factor concerned, and find that the evolutionary curve of E-p undergoes a drop to rise to decay evolution ( the A, B, and C phases, respectively). The A phase peaks at the very onset of the corresponding light-curve pulse. Since the Doppler effect is less prominent in the B phase, corresponding to the rising portion of the pulse, the slope of the B phase reflects both the corresponding intrinsic spectral evolution and the shape of its local pulse. The C phase, corresponding to the decay portion of the pulse, where the Doppler effect dominates, always decreases monotonically and does not necessarily reflect the corresponding intrinsic spectral evolution. Investigation of a sample of 12 FRED pulses ( their peak energy can be found in the work of Kaneko et al.) shows that the evolutionary characteristics of the fitted peak energy in the FRED pulses are in good agreement with our predictions. |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0004-637X |
| URL | 查看原文 |
| WOS记录号 | WOS:000248001500033 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | BATSE OBSERVATIONS ; RELATIVISTIC MOTION ; LIGHT CURVES ; PULSE-WIDTH ; CATALOG ; BRIGHT ; ENERGY ; EMISSION ; SPECTROSCOPY ; INTENSITY |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/7022 |
| 专题 | 星系研究组 |
| 通讯作者 | Lu, RJ (reprint author), Guangxi Univ, Phys Sci & Technol Coll, Nanning 530004, Peoples R China. |
| 作者单位 | 1.Physical Science and Technology College, Guangxi University, Nanning, Guangxi 530004, China 2.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming, Yunnan, 650011, China 3.The Graduate School of the Chinese Academy of Sciences, Beijing 100049, China |
| 推荐引用方式 GB/T 7714 | Lu, RJ,Peng CY,Dong, W,et al. Spectral hardness evolution of gamma-ray bursts due to the Doppler effect of fireballs[J]. ASTROPHYSICAL JOURNAL,2007,663(2):1110-1117. |
| APA | Lu, RJ,Peng CY,Dong, W,&Lu, RJ .(2007).Spectral hardness evolution of gamma-ray bursts due to the Doppler effect of fireballs.ASTROPHYSICAL JOURNAL,663(2),1110-1117. |
| MLA | Lu, RJ,et al."Spectral hardness evolution of gamma-ray bursts due to the Doppler effect of fireballs".ASTROPHYSICAL JOURNAL 663.2(2007):1110-1117. |
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| Spectral Hardness Ev（1012KB） | 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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