Constraint on the maximum mass of neutron stars using GW170817 event
Constraint on the maximum mass of neutron stars using GW170817 event
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DOI：
10.1103/physrevd.100.023015
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发表时间：
2019-05
影响因子：
5
通讯作者：
M. Shibata;E. Zhou;K. Kiuchi;S. Fujibayashi
中科院分区：
文献类型：
--
作者：
M. Shibata;E. Zhou;K. Kiuchi;S. Fujibayashi
我们重新审视了GW170817观测结果对冷球形中子星最大质量的约束。我们利用能量和角动量守恒定律以及最新的数值相对论模拟和中子星平衡态的可靠结果，开发了一个新的分析框架。新的分析表明，冷球形中子星的最大质量只能被弱约束为$M_{\rm max} \alt 2.3M_\odot$。我们目前的结果表明，在坍缩成黑洞开始时，合并残余中子星不一定是快速旋转的，并且表明我们必须考虑角动量守恒定律来对中子星的最大质量施加约束。
We revisit the constraint on the maximum mass of cold spherical neutron stars coming from the observational results of GW170817. We develop a new framework for the analysis by employing both energy and angular momentum conservation laws as well as solid results of latest numerical-relativity simulations and of neutron stars in equilibrium. The new analysis shows that the maximum mass of cold spherical neutron stars can be only weakly constrained as $M_{\rm max} \alt 2.3M_\odot$. Our present result illustrates that the merger remnant neutron star at the onset of collapse to a black hole is not necessarily rapidly rotating and shows that we have to take into account the angular momentum conservation law to impose the constraint on the maximum mass of neutron stars.