The Mass Distribution of Neutron Stars in Gravitational-wave Binaries

The Mass Distribution of Neutron Stars in Gravitational-wave Binaries
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DOI:
10.3847/2041-8213/ac2f3e
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发表时间:
2021-07
期刊:
The Astrophysical Journal Letters
影响因子:
--
通讯作者:
P. Landry;J. Read
P. Landry;J. Read
中科院分区:
其他
文献类型:
--
作者:
P. Landry;J. Read

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LIGO和Virgo发现的两个中子星-黑洞合并使引力波中观察到的可能中子星总数达到6个。我们执行的质量分布的第一个推论,这河外人口的中子星。与主要作为射电双星探测到的双峰星系人口相反,引力波双星中中子星的质量迄今为止与均匀分布一致,高质量中子星更普遍。引力波群的最大质量与我们银河系中子星的推断一致,也与致密物质的预期一致。
The discovery of two neutron star–black hole coalescences by LIGO and Virgo brings the total number of likely neutron stars observed in gravitational waves to six. We perform the first inference of the mass distribution of this extragalactic population of neutron stars. In contrast to the bimodal Galactic population detected primarily as radio pulsars, the masses of neutron stars in gravitational-wave binaries are thus far consistent with a uniform distribution, with a greater prevalence of high-mass neutron stars. The maximum mass in the gravitational-wave population agrees with that inferred from the neutron stars in our Galaxy and with expectations from dense matter.