Journal
PHYSICAL REVIEW D
Volume 100, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.100.062006
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Funding
- French Centre National de la Recherche Scientique (CNRS)
- Italian Istituto Nazionale di Fisica Nucleare (INFN)
- Dutch Nikhef
- JSPS KAKENHI [JP17H06358, JP16K05347, JP15H02087, JP16K05356, JP17H06357]
- U.S. National Science Foundation
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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.
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