originsofshortgammarayburstsdeducedfromoffsetsintheirhostgalaxiesrevisited
文献类型：期刊论文
| 作者 | Cui Xiaohong3; Shigehiro Nagataki2; Aoi Junichi2; Xu Renxin1 |
| 刊名 | researchinastronomyandastrophysics
 |
| 出版日期 | 2012 |
| 卷号 | 012期号:009页码:1255 |
| ISSN号 | 1674-4527 |
| 英文摘要 | The spatial distribution of short Gamma-ray bursts （GRBs） in their host galaxies provides us with an opportunity to investigate their origins. Based on the cur- rently observed distribution of short GRBs relative to their host galaxies, we obtain the fraction of the component that traces the mergers of binary compact objects and the one that traces star formation rate （such as massive stars） in early- and late-type host galaxies. From the analysis of projected offset distribution and only based on population synthesis and massive star models, we find that the fraction of massive stars is 0.37＋_~14~ with an error at the 1or level for a sample with 22 short GRBs in the literature. From these results, it is hard to accept that the origin of short GRBs with ob- served statistics is well described by current models using only the offset distribution. The uncertainties in observational localizations of short GRBs also strongly affect the resulting fraction. |
| 语种 | 英语 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/45106]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.北京大学 2.Yukawa Institute for Theoretical Physics 3.中国科学院国家天文台 |
| 推荐引用方式 GB/T 7714 | Cui Xiaohong,Shigehiro Nagataki,Aoi Junichi,et al. originsofshortgammarayburstsdeducedfromoffsetsintheirhostgalaxiesrevisited[J]. researchinastronomyandastrophysics,2012,012(009):1255. |
| APA | Cui Xiaohong,Shigehiro Nagataki,Aoi Junichi,&Xu Renxin.(2012).originsofshortgammarayburstsdeducedfromoffsetsintheirhostgalaxiesrevisited.researchinastronomyandastrophysics,012(009),1255. |
| MLA | Cui Xiaohong,et al."originsofshortgammarayburstsdeducedfromoffsetsintheirhostgalaxiesrevisited".researchinastronomyandastrophysics 012.009(2012):1255. |
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来源：国家天文台
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