论文标题
通过检测镜头的宿主星系和重力波信号来限制恒星二进制黑洞合并的起源
Constraining the origin of stellar binary black hole mergers by detections of their lensed host galaxies and gravitational wave signals
论文作者
论文摘要
第三代重力波（GW）探测器可能会镜头和检测大量恒星二进制黑洞（SBBH）合并。他们的镜头宿主星系可能可检测到，因此有助于准确地定位这些来源，并提供了一种研究SBBH的起源的新方法。在本文中，我们调查了镜头镜头合并的镜头宿主星系的可检测性。我们发现，如果SBBHs通过不同的机制产生，例如大型二元星星的演变，密集的恒星簇中的动力相互作用，并且由活跃的银河系核或大量的黑孔（诸如巨大的二元相互作用），则具有给定限制幅度的调查的宿主星系对镜头GW事件的检测分数可能会显着不同。此外，我们说明，由不同的SBBH形成通道引起的宿主中这些镜头SBBH的统计空间分布可能彼此不同。因此，通过第三代GW探测器和未来的大规模星系调查，可以通过检测镜头的镜头宿主签名来独立限制SBBH来源，并限制不同SBBH形成机制的贡献分数
A significant number of stellar binary black hole (sBBH) mergers may be lensed and detected by the third generation gravitational wave (GW) detectors. Their lensed host galaxies may be detectable, which thus helps to accurately localize these sources and provide a new approach to study the origin of sBBHs. In this paper, we investigate the detectability of the lensed host galaxies for the lensed sBBH mergers. We find that the detection fraction of the host galaxies to the lensed GW events can be significantly different for a survey with a given limiting magnitude if sBBHs are produced by different mechanisms, such as the evolution of massive binary stars, the dynamical interactions in dense star clusters, and that assisted by active galactic nuclei or massive black holes. Furthermore, we illustrate that the statistical spatial distribution of those lensed sBBHs in its hosts resulting from different sBBH formation channels can be different from each other. Therefore, with the third generation GW detectors and future large scale galaxy surveys, it is possible to independently constrain the sBBH origin via the detection fraction of those lensed events with identifiable lensing host signatures and/or even constrain the contribution fractions from different sBBH formation mechanisms
