论文标题
残留磁盘的性质和低质量黑孔中的恒星合并产生的动力射出
Properties of the remnant disk and the dynamical ejecta produced in low-mass black hole-neutron star mergers
论文作者
论文摘要
我们系统地对低质量黑洞中的星星合并进行了数值差异模拟，该模型的质量比$ q = m _ {\ rm bh}/m _ {\ rm bh}/m _ {\ rm ns} $，范围为1.5至4.4，范围为4.4至4.4，在状态的三个中子 - 梅尔孔中的三个中子 - 均属于黑洞的情况下，并且在黑色洞中的三个中子 - 均具有较黑色的物质和均具有较黑色的物质。我们特别注意依赖二进制的质量比。发现在合并之后，其余质量剩余的质量仅依赖于质量比低的模型的质量比。还可以澄清的是，弹射器的其余质量在$ q \ sim 3 $处的峰值峰值，并且随着低质量比率情况的质量比下降而急剧下降。我们提出了一种新的分析方法，用于合并期间物质的行为，重点是特定能量和特定角动量的相位空间中的物质分布。然后，我们在合并期间和之后对物质分布进行建模。利用分析的结果，我们讨论了喷射的属性。
We systematically perform numerical-relativity simulations for low-mass black hole-neutron star mergers for the models with seven mass ratios $Q=M_{\rm BH}/M_{\rm NS}$ ranging from 1.5 to 4.4, and three neutron-star equations of state, focusing on properties of matter remaining outside the black hole and ejected dynamically during the merger. We pay particular attention to the dependence on the mass ratio of the binaries. It is found that the rest mass remaining outside the apparent horizon after the merger depends only weakly on the mass ratio for the models with low mass ratios. It is also clarified that the rest mass of the ejecta has a peak at $Q \sim 3$, and decreases steeply as the mass ratio decreases for the low mass-ratio case. We present a novel analysis method for the behavior of matter during the merger, focusing on the matter distribution in the phase space of specific energy and specific angular momentum. Then we model the matter distribution during and after the merger. Using the result of the analysis, we discuss the properties of the ejecta.
