利用黑洞末级自旋和质量推断观测到的引力波源的形成历史
Using final black hole spins and masses to infer the formation history of the observed population of gravitational wave sources
摘要：
本文提出了一种新的方法，利用合并黑洞（BH）的剩余质量和自旋来约束祖先双星黑洞（BBH）的形成历史。探索不同的模型，我们发现，动态形成的BBH的分布不同的质量自旋平面比那些已经形成隔离。恒星演化配方至关重要的影响残余质量分布，这表明未来的努力应该致力于找到一个共同的方式来模拟单星和双星的演化阶段。我们简单的方法，使我们能够把弱约束的起源，目前观察到的人口合并BH，虽然具有很高的不确定性。我们的研究结果表明，不同的BBH形成通道的指纹将出现，只要LIGO检测到超过$\sim 10^2$合并事件。这项工作提供了一种思维方式，可以很容易地使用的人孤立和动态BBH的形成和演变。
英文摘要：
In this paper we propose a novel technique to constrain the progenitor binary black hole (BBH) formation history using the remnant masses and spins of merged black holes (BHs). Exploring different models, we found that dynamically formed BBHs are distributed differently in the mass-spin plane than those that have formed in isolation. Stellar evolution recipes crucially affect the remnant mass distribution, suggesting that future efforts should be devoted to finding a common way of modelling the evolutionary phases of single and binary stars. Our simple approach has allowed us to place weak constraints on the origin of the presently observed population of merged BHs, although with high uncertainties. Our results show that the fingerprints of different BBH formation channels will emerge as soon as LIGO detects more than $\sim 10^2$ merger events. This work provides a way of thinking that can be easily used both by people working on isolated and on dynamical BBH formation and evolution.
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