A follow-up on intermediate-mass black hole candidates in the second LIGO–Virgo observing run with the Bayes Coherence Ratio
A follow-up on intermediate-mass black hole candidates in the second LIGO–Virgo observing run with the Bayes Coherence Ratio
复制标题
使用贝叶斯相干比对第二次 LIGO-Virgo 观测运行中的中等质量黑洞候选者进行后续跟踪
DOI：
10.1093/mnras/stac2332
复制
发表时间：
2022
影响因子：
4.8
通讯作者：
Xiao, Liting
中科院分区：
文献类型：
--
作者：
Vajpeyi, Avi;Smith, Rory;Thrane, Eric;Ashton, Gregory;Alford, Thomas;Garza, Sierra;Isi, Maximiliano;Kanner, Jonah;Massinger, T. J.;Xiao, Liting
对中等质量黑洞群（102- 106 M）的探测将为它们的形成环境（例如活动星系核盘，球状星团）提供线索，并照亮产生超大质量黑洞的潜在途径。地面引力波探测器对合并非常敏感，合并可以形成重达1.450兆质量的中等质量黑洞。然而，地面探测器数据包含许多不相干的短时间噪声瞬变，可以模拟合并中等质量黑洞的引力波信号，限制了搜索的灵敏度。在这里，我们后续的二进制黑洞合并的候选人使用排名统计，测量多探测器数据中的触发器的相干性或不相干性。我们使用这个统计数据来对候选事件进行排名，这些事件最初是由全天空搜索管道识别的，使用LIGO第二次观测运行的数据，实验室框架总质量为1.55兆赫兹。我们的分析没有提供新的中等质量黑洞的证据。然而，我们发现支持八个恒星质量的二元黑洞没有在第一个LIGO-Virgo引力波瞬态目录GWTC-1中报道，其中七个以前已被其他目录报道。
The detection of an intermediate-mass black hole population (102–106M⊙) will provide clues to their formation environments (e.g. discs of active galactic nuclei, globular clusters) and illuminate a potential pathway to produce supermassive black holes. Ground-based gravitational-wave detectors are sensitive to mergers that can form intermediate-mass black holes weighing up to ∼450 M⊙. However, ground-based detector data contain numerous incoherent short duration noise transients that can mimic the gravitational-wave signals from merging intermediate-mass black holes, limiting the sensitivity of searches. Here, we follow-up on binary black hole merger candidates using a ranking statistic that measures the coherence or incoherence of triggers in multiple-detector data. We use this statistic to rank candidate events, initially identified by all-sky search pipelines, with lab-frame total masses ≳ 55 M⊙using data from LIGO’s second observing run. Our analysis does not yield evidence for new intermediate-mass black holes. However, we find support for eight stellar-mass binary black holes not reported in the first LIGO–Virgo gravitational wave transient catalogue GWTC-1, seven of which have been previously reported by other catalogues.