Possible Correlations between the Emission Properties of SGRBs and Their Offsets from the Host Galaxies

Possible Correlations between the Emission Properties of SGRBs and Their Offsets from the Host Galaxies
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短暴的发射特性与其与主星系的偏移之间可能存在的相关性

DOI:
10.3847/1538-4357/aa7aa7
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发表时间:
2017-06
影响因子:
4.9
通讯作者:
Wei Da-Ming
Wei Da-Ming
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Zhang Shuai;Jin Zhi-Ping;Zhang Fu-Wen;Li Xiang;Fan Yi-Zhong;Wei Da-Ming

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短伽马射线暴(SGRb)被广泛认为是由至少涉及一颗中子星的双星致密天体合并而成的,因此与其所在星系的空间偏移范围很大。在这项工作中,我们寻找了18个SGRBs的发射性质与它们与宿主星系的偏移量之间的可能关联。有无扩展发射的SGRBs的偏移量分布没有明显的差异,这与前人的一些工作一致。然而,光学和X射线余辉发射与偏移量之间可能存在关联。对潜在的物理起源进行了研究。
Short gamma-ray bursts (SGRBs) are widely believed to be from mergers of binary compact objects involving at least one neutron star and hence have a broad range of spatial offsets from their host galaxies. In this work, we search for possible correlations between the emission properties of 18 SGRBs and their offsets from the host galaxies. The SGRBs with and without extended emission do not show significant differences between their offset distributions, in agreement with some previous works. There are, however, possible correlations between the optical and X-ray afterglow emission and the offsets. The underlying physical origins are examined.
DOI: 10.1093/mnras/288.1.245
发表时间: 1997-02
影响因子: 4.8
作者:
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