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arXiv 1603.00501gr-qcastro-ph.HE
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不等质量双星中子星合并和多信使信号

Unequal mass binary neutron star mergers and multimessenger signals

Luis Lehner, Steven L. Liebling, Carlos Palenzuela, O. L. Caballero, Evan O'Connor, Matthew Anderson, David Neilsen

摘要:

我们采用三种不同的真实微物理核状态方程,并考虑中微子冷却效应,研究了不同质量比的双中子星的合并。特别是,我们集中在引力波签名的状态方程的影响,也对它的作用,结合中微子冷却,在确定所产生的超大质量中子星的性质,产生的中微子,和喷出的物质。我们发现的喷出物与最近的其他研究是一致的,这些研究发现,小质量比产生更多的喷出物比相同质量的情况下(在一定限度内),这种喷出物更富含中子。这一趋势表明,为了能够提取有关核物质状态方程的信息,未来的千新星观测必须测量相关的双星中子星系统的单个质量,这可能是通过同时进行的引力波观测得到的

英文摘要:

We study the merger of binary neutron stars with different mass ratios adopting three different realistic, microphysical nuclear equations of state, as well as incorporating neutrino cooling effects. In particular, we concentrate on the influence of the equation of state on the gravitational wave signature and also on its role, in combination with neutrino cooling, in determining the properties of the resulting hypermassive neutron star, of the neutrinos produced, and of the ejected material. The ejecta we find are consistent with other recent studies that find that small mass ratios produce more ejecta than equal mass cases (up to some limit) and this ejecta is more neutron rich. This trend indicates the importance with future kilonovae observations of measuring the individual masses of an associated binary neutron star system, presumably from concurrent gravitational wave observations, in order to be able to extract information about the nuclear equation of state

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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