论文标题
通过潮汐破坏事件校准核星簇中的二进制黑洞种群
Calibrating the binary black hole population in nuclear star clusters through tidal disruption events
论文作者
论文摘要
随着引力波（GW）仪器的灵敏度提高，新网络开始运行，数百个合并恒星质量的黑洞（SBHS）和中间质量黑洞（IMBHS）预计将在未来几年内观察到。在各种动力环境中，SBH和IMBH二进制文件的起源和分布是GW天文学中的一个基本科学问题。在本文中，我们讨论了潮汐破坏事件（TDES）可能在核星形簇（NSC）中为二进制SBHS和IMBH的组装和合并提供独特的电磁窗口。我们讨论主机NSC质量和密度以及黑洞质量函数的斜率如何设置轨道性质和经历TDE的二进制物的质量。对于典型的NSC属性，我们预测$ \ sim 10^{ - 6} $ - $ 10^{ - 7} \ {\ rm yr}^{ - 1} $ palaxy的tde速率。在二进制的轨道时期，NSC中TDE的灯弯可能会被伴侣黑洞中断和调节。这些应该很容易通过光学瞬态调查（例如Zwicky瞬态设施和LSST）检测到。
As the sensitivity of gravitational wave (GW) instruments improves and new networks start operating, hundreds of merging stellar-mass black holes (SBHs) and intermediate-mass black holes (IMBHs) are expected to be observed in the next few years. The origin and distribution of SBH and IMBH binaries in various dynamical environments is a fundamental scientific question in GW astronomy. In this paper, we discuss ways tidal disruption events (TDEs) may provide a unique electromagnetic window into the assembly and merger of binary SBHs and IMBHs in nuclear star clusters (NSCs). We discuss how the host NSC mass and density and the slope of the black-hole mass function set the orbital properties and the masses of the binaries that undergo a TDE. For typical NSC properties, we predict a TDE rate of $\sim 10^{-6}$--$10^{-7}\ {\rm yr}^{-1}$ per galaxy. The lightcurve of TDEs in NSCs could be interrupted and modulated by the companion black hole on the orbital period of the binary. These should be readily detectable by optical transient surveys such as the Zwicky Transient Facility and LSST.
