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Probing chromatic onsets of gravitational wave overtones
Hai-Tian Wang, Yi-Ming Hu, Peng-Cheng Li +1
The ringdown data of both GW150914 and GW190521\_074359 (GW190521r) show evidence supporting the presence of overtone. Previous studies all adopt a fundamental assumption, which we…
Correspondence of eikonal quasinormal modes and unstable fundamental photon orbits for Kerr-Newman black hole
Peng-Cheng Li, Tsai-Chen Lee, Minyong Guo +1
In this work, we study the relation of the eikonal quasinormal modes (EQNMs) and the unstable fundamental photon orbits (UFPOs) in the Kerr-Newman spacetime. We find that in the ei…
Quasinormal-modes of the Kerr-Newman black hole: GW150914 and fundamental physics implications
Hai-Tian Wang, Shao-Peng Tang, Peng-Cheng Li +1
We develop an analytical ringdown waveform model, including both the fundamental and the overtone quasinormal modes, for charged black holes and show that it is precise enough to a…
Tight constraints on Einstein-dilation-Gauss-Bonnet gravity from GW190412 and GW190814
Hai-Tian Wang, Shao-Peng Tang, Peng-Cheng Li +2
Gravitational-wave (GW) data can be used to test general relativity in the highly nonlinear and strong field regime. Modified gravity theories such as Einstein-dilation-Gauss-Bonne…