Kavli Affiliate: Scott A. Hughes
| First 5 Authors: Emanuele Berti, Vitor Cardoso, Gregorio Carullo, Jahed Abedi, Niayesh Afshordi
| Summary:
The "ringdown" radiation emitted by oscillating black holes has great
scientific potential. By carefully predicting the frequencies and amplitudes of
black hole quasinormal modes and comparing them with gravitational-wave data
from compact binary mergers we can advance our understanding of the two-body
problem in general relativity, verify the predictions of the theory in the
regime of strong and dynamical gravitational fields, and search for physics
beyond the Standard Model or new gravitational degrees of freedom. We summarize
the state of the art in our understanding of black hole quasinormal modes in
general relativity and modified gravity, their excitation, and the modeling of
ringdown waveforms. We also review the status of LIGO-Virgo-KAGRA ringdown
observations, data analysis techniques, and the bright prospects of the field
in the era of LISA and next-generation ground-based gravitational-wave
detectors.
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