Search for intermediate mass black hole binaries in the first and second observing runs of the Advanced LIGO and Virgo network
Search for intermediate mass black hole binaries in the first and second observing runs of the Advanced LIGO and Virgo network
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DOI：
10.1103/physrevd.100.064064
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发表时间：
2019-09-30
影响因子：
5
通讯作者：
Papa, M. A.
中科院分区：
文献类型：
--
作者：
Abbott, B. P.;Abbott, R.;Papa, M. A.
引力波天文学已经牢固地建立在对十个恒星质量的双星黑洞和一个中子星星双星合并产生的引力波的探测上。本文报道了Advanced LIGO和Virgo网络在第一次和第二次观测运行中对中等质量黑洞双星引力波的全天搜索。搜索使用三个独立的算法：两个基于匹配滤波的数据与波形模板的引力波信号从紧凑的二进制文件，第三，模型无关的算法，采用没有信号模型的传入信号。在这次搜索中没有发现中等质量的黑洞双星事件。因此，我们把一个家庭的中等质量黑洞双星的合并率密度的上限。特别地，我们选择具有总质量M = m（1）+ m（2）的源是[120，800] M圆点的元素，并且质量比q = m（2）/m（1）是[0.1，1.0]的元素。第一次，使用数值相关性波形（其包括更高模式）作为真实的发射信号的模型来完成该计算。对于质量m（1，2）= 100 M圆点、无量纲自旋chi（1，2）= 0.8且与双星轨道角动量一致的等质量双星，我们给出了最严格的上限为0.20 Gpc（-3）yr（-1）（在90%置信水平下以共动单位表示）。这比Advanced LIGO第一次观测运行后报告的结果提高了5倍。
Gravitational-wave astronomy has been firmly established with the detection of gravitational waves from the merger of ten stellar-mass binary black holes and a neutron star binary. This paper reports on the all-sky search for gravitational waves from intermediate mass black hole binaries in the first and second observing runs of the Advanced LIGO and Virgo network. The search uses three independent algorithms: two based on matched filtering of the data with waveform templates of gravitational-wave signals from compact binaries, and a third, model-independent algorithm that employs no signal model for the incoming signal. No intermediate mass black hole binary event is detected in this search. Consequently, we place upper limits on the merger rate density for a family of intermediate mass black hole binaries. In particular, we choose sources with total masses M = m(1) + m(2) is an element of [120, 800] M-circle dot and mass ratios q = m(2)/m(1) is an element of [0.1,1.0]. For the first time, this calculation is done using numerical relativity waveforms (which include higher modes) as models of the real emitted signal. We place a most stringent upper limit of 0.20 Gpc(-3) yr(-1) (in comoving units at the 90% confidence level) for equal-mass binaries with individual masses m(1,2) = 100 M-circle dot and dimensionless spins chi(1,2) = 0.8 aligned with the orbital angular momentum of the binary. This improves by a factor of similar to 5 that reported after Advanced LIGO's first observing run.