论文标题
恒星簇的破坏，在银河核中超级质量和中间质量黑洞的合并
Mergers of supermassive and intermediate-mass black holes in galactic nuclei from disruptions of star clusters
论文作者
论文摘要
引力波（GWS）提供了一个前所未有的机会，可以调查天空并检测紧凑物体的合并。尽管没有合理怀疑的中间质量黑洞（IMBH）在动态或积聚的签名中尚未被发现，但GW景观似乎非常有前途。 IMBH与超大质量黑洞（SMBH）的合并将是计划中的空间任务丽莎的主要来源，可以观察到遥远的宇宙。 SMBH-IMBH二进制文件可以是由于恒星簇在星系中心的迁移和合并而形成的，SMBH潜伏。 We build for the first time a semi-analytical framework to model this scenario, and find that the the comoving merger rate of SMBH-IMBH binaries is $\sim 10^{-4}$ Gpc$^{-3}$ yr$^{-1}$ in the local Universe for a unity IMBH occupation fraction, scales linearly with it, and has a peak at $z\approx 0.5 $ - $ 2 $。我们的模型预测$ \ sim 0.1 $ event yr $^{ - 1} $在Redshift $ z \中，如果$ 10 \％$的Inspiralled Star簇的$ 10 \％$托管IMBH，而$ \ sim 1 $ Events yr $^{ - 1} $用于UNITY职业分数。 Lisa可以检测到这些系统中超过90美元的$ 90 \％$，其信噪比大于$ 10 $，有望有可能找到IMBHS家族。
Gravitational waves (GWs) offer an unprecedented opportunity to survey the sky and detect mergers of compact objects. While intermediate-mass black holes (IMBHs) have not been detected beyond any reasonable doubt with either dynamical or accretion signatures, the GW landscape appears very promising. Mergers of an IMBH with a supermassive black hole (SMBH) will be primary sources for the planned space-based mission LISA and could be observed up to the distant Universe. SMBH-IMBH binaries can be formed as a result of the migration and merger of stellar clusters at the center of galaxies, where an SMBH lurks. We build for the first time a semi-analytical framework to model this scenario, and find that the the comoving merger rate of SMBH-IMBH binaries is $\sim 10^{-4}$ Gpc$^{-3}$ yr$^{-1}$ in the local Universe for a unity IMBH occupation fraction, scales linearly with it, and has a peak at $z\approx 0.5$-$2$. Our model predicts $\sim 0.1$ event yr$^{-1}$ within redshift $z\approx 3.5$ if $10\%$ of the inspiralled star clusters hosted an IMBH, while $\sim 1$ events yr$^{-1}$ for a unity occupation fraction. More than $90\%$ of these systems will be detectable with LISA with a signal-to-noise ratio larger than $10$, promising to potentially find a family of IMBHs.
