Searching for black hole echoes from the LIGO-Virgo catalog GWTC-1
Searching for black hole echoes from the LIGO-Virgo catalog GWTC-1
复制标题
从 LIGO-Virgo 目录 GWTC-1 中搜索黑洞回波
DOI：
10.1103/physrevd.100.062006
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发表时间：
2019
影响因子：
5
通讯作者：
Tanaka Takahiro
中科院分区：
文献类型：
--
作者：
Uchikata Nami;Nakano Hiroyuki;Narikawa Tatsuya;Sago Norichika;Tagoshi Hideyuki;Tanaka Takahiro
我们已经搜索了可能的引力波回波信号的9个二元黑洞合并事件所观察到的先进LIGO和处女座在第一次和第二次观测运行。为了构造一个回波模板，我们考虑克尔时空，其中事件视界被反射膜所取代。我们使用一个依赖于频率的反射率在角势垒，这是拟合的数值数据通过求解Teukolsky方程。该反射率给出了在模板中在较低频率处被抑制的频率依赖性透射率。我们还考虑了波形的整体相移作为参数，当波在膜和势垒处反射时产生。使用这个基于黑洞扰动的模板，我们在双黑洞合并事件中没有发现明显的回波信号。
We have searched for possible gravitational wave echo signals for nine binary black hole merger events observed by Advanced LIGO and Virgo during the first and second observation runs. To construct an echo template, we consider Kerr spacetime, where the event horizon is replaced by a reflective membrane. We use a frequency-dependent reflection rate at the angular potential barrier, which is fitted to the numerical data obtained by solving Teukolsky equations. This reflection rate gives a frequency-dependent transmission rate that is suppressed at lower frequencies in the template. We also take into account the overall phase shift of the waveform as a parameter, which arises when the wave is reflected at the membrane and potential barrier. Using this template based on black hole perturbation, we find no significant echo signals in the binary black hole merger events.