Detectability of the subdominant mode in a binary black hole ringdown
Detectability of the subdominant mode in a binary black hole ringdown
The ringdown is the late part of the post-merger signature emitted during the coalescence of two black holes and comprises of a superposition of quasi-normal-modes. Within general relativity, because of the no-hair theorems, the frequencies and damping times of these modes are entirely determined by the mass and angular momentum …