论文标题
来自重力波捕获的中子星 - 黑色孔合并
Neutron Star-Black Hole Mergers from Gravitational Wave Captures
论文作者
论文摘要
Ligo的第三次观察跑（O3）报告了几个中子星光洞（NSBH）合并候选者。从理论的角度来看，NSBH合并在社区中受到的关注少于二进制黑洞（BBHS）或二进制中子星（BNSS）。在这里，我们检查了不同类型的恒星簇中的单个单个单个（GW）捕获 - 银河系核（GN），球状簇（GC）和Young Stellar簇（YSC） - 并比较该通道与文献中其他提出的合并通道的合并速率。目前，每个合并渠道都有大量不确定性，对NSBH合并的起源做出了明确的结论。但是，要牢记这些不确定性，我们发现Sin-Sin GW捕获不太可能显着促进NSBH合并率。通常，看来该场或集群中孤立的二进制演变以及三重配置中动态相互作用的二进制方法可能会导致更高的合并速率。
LIGO's third observing run (O3) has reported several neutron star-black hole (NSBH) merger candidates. From a theoretical point of view, NSBH mergers have received less attention in the community than either binary black holes (BBHs), or binary neutron stars (BNSs). Here we examine single-single (sin-sin) gravitational wave (GW) captures in different types of star clusters -- galactic nuclei (GN), globular clusters (GC), and young stellar clusters (YSC) -- and compare the merger rates from this channel to other proposed merger channels in the literature. There are currently large uncertainties associated with every merger channel, making a definitive conclusion about the origin of NSBH mergers impossible. However, keeping these uncertainties in mind, we find that sin-sin GW capture is unlikely to significantly contribute to the overall NSBH merger rate. In general, it appears that isolated binary evolution in the field or in clusters, and dynamically interacting binaries in triple configurations, may result in a higher merger rate.
