Science with the TianQin observatory: Preliminary results on stellar-mass binary black holes
Science with the TianQin observatory: Preliminary results on stellar-mass binary black holes
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天琴天文台科学：恒星质量双黑洞的初步结果
DOI：
10.1103/physrevd.101.103027
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发表时间：
2020
影响因子：
5
通讯作者：
Mei Jianwei
中科院分区：
文献类型：
--
作者：
Liu Shuai;Hu Yi-Ming;Zhang Jian-dong;Mei Jianwei
我们研究了利用天琴探测恒星质量双黑洞（SBBHs）的前景。我们使用五种不同的总体模型估计了SBBH样本的期望检测数以及参数估计的精度。我们注意到，天琴可以检测到一些信噪比大于12的SBBH吸气；降低阈值和组合多个检测器都可以提高检测次数。对于大多数高于检测阈值的事件，源参数可以以较高的精度恢复。例如，合并时间的精度最可能发生在1 s附近，可以指导地面探测器的探测；偏心距e0的精度最可能发生在10-4附近，可以区分地层通道；质量参数的精度一般优于10-6，最可能发生在10-7附近。我们特别注意到，对于典型的合并事件，误差体积可能小到只包含宿主星系，这对引力波宇宙学的研究和通过多信使观测的相关研究有很大的帮助。
We study the prospect of using TianQin to detect stellar-mass binary black holes (SBBHs). We estimate the expected detection number as well as the precision of parameter estimation on SBBH inspirals, using five different population models. We note TianQin can possibly detect a few SBBH inspirals with signal to noise ratios greater than 12; lowering the threshold and combining multiple detectors can both boost the detection number. The source parameters can be recovered with good precision for most events above the detection threshold. For example, the precision of the merger time most likely occurs near 1 s, making it possible to guide the detection of the ground-based detectors, the precision of the eccentricity e0 most likely occurs near 10-4, making it possible to distinguish the formation channels, and the precision of the mass parameter is better than 10-6 in general and most likely occurs near 10-7. We note, in particular, that for a typical merger event, the error volume is likely to be small enough to contain only the host galaxy, which could greatly help in the study of gravitational wave cosmology and relevant studies through the multimessenger observation.