论文标题
Ligo/处女座是否检测到分层三体合并？
Have hierarchical three-body mergers been detected by LIGO/Virgo?
论文作者
论文摘要
提议的二进制黑洞合并的通道之一涉及三个黑洞的动态相互作用。在这种情况下，所有三个黑洞都有可能在所谓的层次合并链中合并，其中两个黑洞首先合并，然后将其残留物与其余的单个黑洞合并。根据动态环境，两个合并都可能出现在可观察到的时间窗口中。在这里，我们在公共可用的Ligo中搜索了此类合并对，并从O1/O2运行中进行了处女座数据。使用常见的P值分配统计，我们没有发现任何重要的合并对候选者，最重要的是GW170809-GW151012对。假设在O3/O4中没有观察到的候选者，我们在合并对上的上限为$ \ sim11-110 \ {\ rm Year^{ - 1} gpc^{ - 3}} $，对应于相对于总合并率为$ \ sim 0.1-1.0 $的速率。我们认为，在未来几年内，检测和非检测都可以用来对某些动态祖细胞模型对有用的约束。
One of the proposed channels of binary black hole mergers involves dynamical interactions of three black holes. In such scenarios, it is possible that all three black holes merge in a so-called hierarchical merger chain, where two of the black holes merge first and then their remnant subsequently merges with the remaining single black hole. Depending on the dynamical environment, it is possible that both mergers will appear within the observable time window. Here we perform a search for such merger pairs in the public available LIGO and Virgo data from the O1/O2 runs. Using a frequentist p-value assignment statistics we do not find any significant merger pair candidates, the most significant being GW170809-GW151012 pair. Assuming no observed candidates in O3/O4, we derive upper limits on merger pairs to be $\sim11-110\ {\rm year^{-1}Gpc^{-3}}$, corresponding to a rate that relative to the total merger rate is $\sim 0.1-1.0$. From this we argue that both a detection and a non-detection within the next few years can be used to put useful constraints on some dynamical progenitor models.
