canthebumpinthecompositespectrumofgrb910503beanemissionlinefeatureofgammaraybursts
文献类型：期刊论文
| 作者 | Qin Yiping; Zhang Fuwen |
| 刊名 | chinesejournalofastronomyandastrophysics
 |
| 出版日期 | 2005 |
| 卷号 | 5期号:6页码:627 |
| ISSN号 | 1009-9271 |
| 英文摘要 | Appearing in the composite spectral data of BATSE, EGRET and COMPTEL for GRB 910503, there is a bump at around 1600 keV. We perform a statistical analysis on the spectral data, trying to find out if the bump could be accounted for by a blue-shifted and significantly broadened rest frame line due to the Doppler effect of an expanding fireball surface. We made an F-test and adopted previously proposed criteria. The study reveals that the criteria are well satisfied and the feature can be interpreted as the blue shifted 6.4 keV line. From the fit with this line taken into account, we find the Lorentz factor of this source to be Gamma =- 116(-9)(+9) (at the 68% confident level, Delta chi(2) = 1) and the rest frame spectral peak energy to be E-0,E-p = 2.96(-0.18)(+0.24) keV. Although the existence of the emission line feature requires other independent tests to confirm, the analysis suggests that it is feasible to detect emission line features in the high energy range of GRB spectra when taking into account the Doppler effect of fireball expansion. |
| 语种 | 英语 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/52583]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 中国科学院国家天文台 |
| 推荐引用方式 GB/T 7714 | Qin Yiping,Zhang Fuwen. canthebumpinthecompositespectrumofgrb910503beanemissionlinefeatureofgammaraybursts[J]. chinesejournalofastronomyandastrophysics,2005,5(6):627. |
| APA | Qin Yiping,&Zhang Fuwen.(2005).canthebumpinthecompositespectrumofgrb910503beanemissionlinefeatureofgammaraybursts.chinesejournalofastronomyandastrophysics,5(6),627. |
| MLA | Qin Yiping,et al."canthebumpinthecompositespectrumofgrb910503beanemissionlinefeatureofgammaraybursts".chinesejournalofastronomyandastrophysics 5.6(2005):627. |
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来源：国家天文台
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