论文标题
搜索来自质量紧凑型二进制合并的非线性记忆
Search for nonlinear memory from subsolar mass compact binary mergers
论文作者
论文摘要
我们介绍了在LIGO和处女座检测器的第二次观察运行（O2）期间，搜索从下极二进制黑洞（BBH）合并中寻找非线性记忆的结果。来自低质量BBHS的灵感和合并的振荡CHIRP信号（$ M_ \ MATHRM {TOT} \ LEQ 0.4 M_ \ ODOT $）在非常高的频率上，并且超出了当前地面检测器的灵敏度。但是，合并期间的非振荡记忆信号朝着较低的频率饱和，可以检测到建议的BBH。我们在这项工作中表明，内存信号的形态最大程度地取决于二进制的源参数，因此只有信号变化的总体幅度，因此可以将结果插值用于极低的质量BBH合并。我们找不到任何可以解释为内存信号的信号，我们首次使用$ M_ \ Mathrm {Tot} \ Leq 0.4 M_ \ ODOT $对BBH合并的速率放置上限。
We present the first results of the search for nonlinear memory from subsolar mass binary black hole (BBH) mergers during the second observing run (O2) of the LIGO and Virgo detectors. The oscillatory chirp signal from the inspiral and merger of low mass BBHs ($M_\mathrm{Tot} \leq 0.4 M_\odot$) are at very high frequencies and fall outside the sensitivity band of the current ground-based detectors. However, the non-oscillatory memory signal during the merger saturates towards the lower frequencies and can be detected for those proposed BBHs. We show in this work that the morphology of the memory signal depends minimally upon the source parameters of the binary, thus only the overall amplitude of the signal changes and hence the result can be interpolated for extremely low mass BBH mergers. We did not find any signal which can be interpreted as a memory signal and we place upper limits on the rate of BBH mergers with $M_\mathrm{Tot} \leq 0.4 M_\odot$ for the first time.
