论文标题
使用二进制黑洞的重力波观测来探测大规模结构
Probing the large scale structure using gravitational-wave observations of binary black holes
论文作者
论文摘要
预计第三代重力波（GW）探测器将检测到大型红移的大量二进制黑洞（BBH），并使用它们的聚类对大规模结构进行独立的探测。该探针将与使用星系聚类的探针相辅相成 - 尽管源定位在较大距离（$ \ sim $ n of Square temeres）时，GW事件最多可以观察到非常大的红移（$ z \ sim 10 $）。我们使用其两点（自动）相关函数探索了从观察到的BBH总体的空间分布中探测大规模结构的可能性。我们发现我们可以估计BBH人口的偏见因素（最高$ z \ sim 0.7 $），并与这些检测器进行了几年的观察。我们的方法仅依赖于从GW事件获得的源地点后期，并且不需要来自电磁观测的任何信息。这将有助于确定托有BBH人群的星系类型，从而阐明其起源。
Third generation gravitational-wave (GW) detectors are expected to detect a large number of binary black holes (BBHs) to large redshifts, opening up an independent probe of the large scale structure using their clustering. This probe will be complementary to the probes using galaxy clustering -- GW events could be observed up to very large redshifts ($z \sim 10$) although the source localization will be much poorer at large distances ($\sim$ tens of square degrees). We explore the possibility of probing the large scale structure from the spatial distribution of the observed BBH population, using their two-point (auto)correlation function. We find that we can estimate the bias factor of population of BBH (up to $z \sim 0.7$) with a few years of observations with these detectors. Our method relies solely on the source-location posteriors obtained from the GW events and does not require any information from electromagnetic observations. This will help in identifying the type of galaxies that host the BBH population, thus shedding light on their origins.
