Numerical computation of quasinormal modes in the first-order approach to black hole perturbations in modified gravity
Hugo Roussille,
David Langlois,
Karim Noui
Abstract:We present a novel approach to the numerical computation of quasi-normal modes, based on the first-order (in radial derivative) formulation of the equations of motion and using a matrix version of the continued fraction method. This numerical method is particularly suited to the study of static black holes in modified gravity, where the traditional second-order, Schrödinger-like, form of the equations of motion is not always available. Our approach relies on the knowledge of the asymptotic behaviours of the pe… Show more
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