z~1质量团簇的超低频引力波
Ultra-Low Frequency Gravitational Waves from Massive Clusters at z~1
摘要：
最近的进展与脉冲星定时阵列实验，特别是从NANOGrav合作表明，我们是在尖端检测到显着的信号从螺旋状的超大质量黑洞二进制（SMBHB）。虽然最近的分析集中在附近的星系作为最响亮的信号的可能来源，我们发现，在z~1的已确定的集群合并可以有更大的应变振幅。我们做了一个估计比较附近的2 MASS红移调查星系样本与更遥远的MaDCoWS集群样本，表明后者可能会贡献更多，更响亮，引力波事件。因此，第一个单独的源检测很可能是来自z~1的星系团中的超大质量BH，而不是附近的星系。
英文摘要：
Recent progress with pulsar timing array experiments, especially from the NANOGrav collaboration indicate that we are on the cusp of detecting significant signals from the inspiral of super-massive black hole binaries (SMBHB). While recent analysis has focused on nearby galaxies as possible sources of the loudest signals, we show that mergers in identified clusters at z~1 can have larger strain amplitudes. We make an estimate comparing the nearby 2MASS redshift survey galaxy sample with the more distant MaDCoWS cluster sample, showing that the latter might be expected to contribute more, and louder, gravitational wave events. Thus the first individual source detections may well be from ultra-massive BH in clusters at z~1, rather than nearby galaxies.
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