The ringdown phase of a binary black-hole merger encodes key information
about the remnant properties and provides a direct probe of the strong-field
regime of General Relativity. While quasi-normal mode frequencies and damping
times are well understood within black-hole perturbation theory, their
excitation amplitudes remain challenging to model, as they depend on the merger
phase. The complexity increases for precessing black-hole binaries, Wo
multiple emission modes can contribute comparably to the ringdown. Dabei
paper, we investigate the phenomenology of precessing binary black hole
ringdowns using the SXS numerical relativity simulations catalog. Precession
significantly impacts the ringdown excitation amplitudes and the related mode
hierarchy. Using Gaussian process regression, we construct the first fits for
the ringdown amplitudes of the most relevant modes in precessing systems.

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