论文标题
极端旋转和质量比对高质量二进制中子星的合并后观察结果的影响
Impact of extreme spins and mass ratios on the post-merger observables of high-mass binary neutron stars
论文作者
论文摘要
重力波事件GW170817和GW190425导致了有关密集物质状态和中子星的性质（例如它们的半径和最大质量）的许多重要见解。这些结论中的一些是根据二进制中子星的数值模拟，随着初始旋转的消失而得出的。虽然这可能是相等质量系统中的合理假设，但在存在较大的质量不对称的情况下，伴随着高自旋的存在可能会违反。为了量化高旋转对多通间剂重力波事件的影响，我们进行了一系列高质量的二元中子星级合并，具有高度旋转的原代恒星和大质量不对称性，这些巨大不对称是使用两个温度依赖的状态方程式自我建模的。我们表明，与相等的质量，无那种二进制相比，这些系统可能会导致残余寿命，动态喷射，残余圆盘质量，世俗弹出中的剩余二张，在散装的基洛诺瓦特性上。可以利用这些差异来消除在二元中子星级合并引力波时低旋转和高旋转培训之间的堕落性。
The gravitational-wave events GW170817 and GW190425 have led to a number of important insights on the equation of state of dense matter and the properties of neutron stars, such as their radii and the maximum mass. Some of these conclusions have been drawn on the basis of numerical-relativity simulations of binary neutron-star mergers with vanishing initial spins. While this may be a reasonable assumption in equal-mass systems, it may be violated in the presence of large mass asymmetries accompanied by the presence of high spins. To quantify the impact of high spins on multi-messenger gravitational-wave events, we have carried out a series of high-mass binary neutron-star mergers with a highly spinning primary star and large mass asymmetries that have been modelled self-consistently using two temperature-dependent equations of state. We show that, when compared with equal-mass, irrotational binaries, these systems can lead to significant differences in the remnant lifetime, in the dynamical ejecta, in the remnant disc masses, in the secular ejecta, and on the bulk kilonova properties. These differences could be exploited to remove the degeneracy between low- and high-spin priors in the detection of gravitational waves from binary neutron-star mergers.
