Dynamical mass ejection from the merger of asymmetric binary neutron stars: Radiation-hydrodynamics study in general relativity
Dynamical mass ejection from the merger of asymmetric binary neutron stars: Radiation-hydrodynamics study in general relativity
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DOI：
10.1103/physrevd.93.124046
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发表时间：
2016-03
影响因子：
5
通讯作者：
Yuichiro Sekiguchi;K. Kiuchi;K. Kyutoku;M. Shibata;K. Taniguchi
中科院分区：
文献类型：
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作者：
Yuichiro Sekiguchi;K. Kiuchi;K. Kyutoku;M. Shibata;K. Taniguchi
EOS（DD 2）中，随着质量不对称程度的增加，喷出物总质量显著增加，Ye和s的平均值略有减小。我们再次发现，只有在软状态方程（SFHo）下，无论本文选择的质量比如何，总的喷出物质量都超过0：01 M。喷出物具有不同的每重子电子数，其平均值约在Ye 0：2 ~ 0：3之间，这非常适合r过程重元素（第二和第三峰）的产生，尽管其平均值随质量不对称程度的增加而减小。
EOS (DD2), with the increase of the mass asymmetry degree, the total ejecta mass signicantly increases while the average of Ye and s moderately decreases. We nd again that only for the soft EOS (SFHo), the total ejecta mass exceeds 0:01M irrespective of the mass ratio chosen in this paper. The ejecta have a variety of electron number per baryon with its average approximately between Ye 0:2 and 0:3 irrespective of the EOS employed, which is well-suited for the production of the r-process heavy elements (second and third peaks), although its averaged value decreases with the increase of the degree of mass asymmetry.