Kerr Ringdown · Quasinormal Modes
unseel.com · perturbed horizon · damped gravitational waves · ω = ω_R − i/τ
Frequency f — Hz
Damping τ — ms
phase
Kerr horizon
Light ring (photon orbit)
Ringdown waveform h(t)
Gravitational-wave ripple
Horizon perturbation
Unseel.com · Kerr Ringdown: Quasinormal Modes of a Perturbed Black Hole