论文标题
在中子星和GW190814的最大质量上
On the maximum mass of neutron stars and GW190814
论文作者
论文摘要
在二进制合并GW190814中，最近发现了一个紧凑型物体$ 2.5 { - } 2.67 \，\ mathrm {m} _ \ odot $的质量，我们重新审视了中子星（NSS）最大质量的问题。我们使用马尔可夫链蒙特卡洛方法来产生约200万个现象学的状态方程，并没有一阶相变。我们固定状态的外壳方程，仅在较高的密度下假设因果关系。我们展示了如何通过对NS半径和质量的观察来推断最大NS质量的严格上限。派生的上限仅取决于相对论和因果关系，因此不受核物理不确定性的影响。我们展示了NSS的最大质量的下限，以及Ligo/Pirgo和Noter对NS Radii的即将进行的测量，将如何限制密集物质状态的方程。最后，我们讨论了对GW190814的影响。
Motivated by the recent discovery of a compact object with mass in the range $2.5{-}2.67\, \mathrm{M}_\odot$ in the binary merger GW190814, we revisit the question of the maximum mass of neutron stars (NSs). We use a Markov Chain Monte Carlo approach to generate about 2 million phenomenological equations of state with and without first order phase transitions. We fix the crust equation of state and only assume causality at higher densities. We show how a strict upper bound on the maximum NS mass can be inferred from upcoming observation of NS radii and masses. The derived upper bounds depend only on relativity and causality, so it is not affected by nuclear physics uncertainties. We show how a lower limit on the maximum mass of NSs, in combination with upcoming measurements of NS radii by LIGO/Virgo and NICER, would constrain the equation of state of dense matter. Finally, we discuss the implications for GW190814.
