论文标题
LIGO/处女座黑孔和暗物质：空间聚类的效果
LIGO/Virgo black holes and dark matter: The effect of spatial clustering
论文作者
论文摘要
我们讨论聚类对确定Ligo质量范围内二元黑洞合并速率的影响。尽管对于泊松的初始分布和孤立的二进制文件，但原始黑洞（PBHS）允许到深色物质（DM）的允许部分是百分之几，但我们表明，如果PBH簇聚集，则可以放松这种结合。更确切地说，我们表明，对于大量聚类，合并速率可以随着PBH的增加而下降，从而引入了与给定当前合并率一致的理论参数中的退化，并允许所有DM以恒星质量PBH的形式形式。但是，通过查看与红移的合并速率的演变，可以打破这种退化。对于我们考虑的简单聚类模型，我们表明，通过观察引力波的随机背景，具有相同当前合并速率的不同聚类分布可以通过观察到引力波的随机背景来解散。
We discuss the effect of clustering for the determination of the merger rate of binary black holes in the LIGO mass range. While for a Poissonian initial distribution, and assuming isolated binaries, the allowed fraction of Primordial Black Holes (PBHs) to dark matter (DM) is a few percent, we show that this bound can be relaxed if PBHs are clustered. More precisely we show that for large clustering the merger rate can drop with increasing fraction of PBHs, introducing a degeneracy in the parameters of the theory consistent with a given present merger rate, and allowing all the DM to be in the form of stellar mass PBHs. This degeneracy can however be broken by looking at the evolution of the merger rate with redshift. For a simple clustering model that we consider, we show that the LIGO projected sensitivity can disentangle, through the observation of a stochastic background of gravitational waves, different clustered distributions having the same present merger rate.
