Binary black hole spectroscopy: A no-hair test of GW190814 and GW190412
Binary black hole spectroscopy: A no-hair test of GW190814 and GW190412
Gravitational waves provide a window to probe general relativity (GR) under extreme conditions. The recent observations of GW190412 and GW190814 are unique high-mass-ratio mergers that enable the observation of gravitational-wave harmonics beyond the dominant $(\ell, m) = (2, 2)$ mode. Using these events, we search for physics beyond GR by …