论文标题
空间重力波干涉仪将检测到多少个半乳酸恒星质量黑洞？
How many extra-Galactic stellar-mass binary black holes will be detected by space gravitational-wave interferometers?
论文作者
论文摘要
在GWTC-3的基础上，我们讨论了通过空间重力波干涉仪进行半乳酸外二元黑洞（BBH）的检测前景。特别是，针对约5-100 $ m_ \ odot $的组件质量的BBH，我们直接纳入了检测到的62个BBH的CHIRP质量分布。我们发现，由于合并合并速率和加权平均值的降低，预期的检测数通常比GW150914报告后立即获得的同一作者获得的结果小得多。对于LISA，总BBH检测估计为$ n _ {\ rm tot} \ sim 2（t/4 {\ rm yr}）^{3/2}（ρ_{\ rm thr}/10/10阈值，$ t $：观察期）。 Tianqin将有一个总检测号$ n _ {\ rm tot} $类似于Lisa。同时，天气有可能找到$ n _ {\ rm mer} \ sim0.6（t/4 {\ rm yr}）^{7/4}（ρ_{\ rm thr}/10）由于最佳带之间的差异，该合并BBHS的数字是LISA的4-5倍。我们还研究了多个检测器联合操作的前景，发现并发观察结果比顺序更有利。
On the basis of GWTC-3, we discuss the detection prospect of extra-Galactic binary black holes (BBHs) by space gravitational-wave interferometers. In particular, targeting BBHs with component masses around 5-100$M_\odot$, we directly incorporate the chirp mass distribution of the 62 BBHs detected at high significance. We find that, due to the reduction of both the comoving merger rate and a weighted average of chirp masses, the expected detection numbers are generally much smaller than the results obtained by the same authors immediately after the report of GW150914. For LISA, the total BBH detections are estimated to be $N_{\rm tot}\sim 2 (T/4{\rm yr})^{3/2}(ρ_{\rm thr}/10)^{-3}$, dominated by nearly monochromatic BBHs ($ρ_{\rm thr}$: the detection threshold, $T$: the observational period). TianQin will have a total detection number $N_{\rm tot}$ similar to LISA. Meanwhile, TianQin has potential to find $N_{\rm mer}\sim0.6 (T/4{\rm yr})^{7/4}(ρ_{\rm thr}/10)^{-3}$ BBHs that merge in the observational period. This number for merging BBHs is 4-5 times larger than that of LISA, because of the difference between the optimal bands. We also investigate prospects for joint operations of multiple detectors, finding that concurrent observations will be more advantageous than sequential ones.
