论文标题
来自带状尺寸尺寸估计的类星体的微透镜观测值的大量LIGO/处女座黑洞
Abundance of LIGO/Virgo Black Holes from Microlensing Observations of Quasars with Reverberation Mapping Size Estimates
论文作者
论文摘要
假设有一群黑洞（BHS）的人口，其中Ligo/处女座从BH合并推断出的质量范围内，我们使用Quasar微透镜观测值来估计它们的丰度。我们认为恒星和BHS的混合群以及存在光滑的暗物质成分。我们采用了类星体大小的混响映射估计。根据对测得的微透镜的贝叶斯分析，质量为$ \ sim $ 30 $ m _ {\ odot} $的BHS人口占置信水平68％的总物质的0.4％（在90％的信心下低于0.9％）。我们已经探索了Ligo/处女座BHS的整个质量范围，发现该上限在68％C.L.时为0.5％至0.4％。 （在90％C.L.时从1.1％到0.9％）当BHS质量从10变为60 $ m _ {\ odot} $时。我们估计恒星的16％贡献，与以前的研究一致，基于单个质量人群，这些研究不明确考虑BHS的存在。这些结果与Ligo/处女座合并统计的BH丰度的估计值一致，并排除了PBHS（或任何类型的紧凑型物体），在此质量范围内占暗物质的很大一部分。
Assuming a population of Black Holes (BHs) with masses in the range inferred by LIGO/Virgo from BH mergers, we use quasar microlensing observations to estimate their abundances. We consider a mixed population of stars and BHs and the presence of a smooth dark matter component. We adopt reverberation mapping estimates of the quasar size. According to a Bayesian analysis of the measured microlensing magnifications, a population of BHs with masses $\sim$ 30$M_{\odot}$ constitutes less than 0.4 % of the total matter at 68 % confidence level (less than 0.9 % at 90 % confidence). We have explored the whole mass range of LIGO/Virgo BHs finding that this upper limit ranges from 0.5 % to 0.4 % at 68 % C.L. (from 1.1 % to 0.9 % at 90 % C.L.) when the BHs mass change from 10 to 60$M_{\odot}$. We estimate a 16 % contribution from the stars, in agreement with previous studies based on a single mass population that do not consider explicitly the presence of BHs. These results are consistent with the estimates of BH abundances from the statistics of LIGO/Virgo mergers and rule out that PBHs (or any type of compact objects), in this mass range constitute a significant fraction of the dark matter.
