Gravitational quasinormal modes of the Hayward spacetime

Abstract We study gravitational quasinormal modes of the Hayward spacetime, a regular black-hole geometry that also admits an interpretation as an effective quantum-corrected solution within asymptotically safe gravity. Using both the higher-order WKB method supplemented with Padé approximants and time-domain integration with Prony analysis, we obtain accurate spectra for axial perturbations and explore the impact of the quantum parameter $$\gamma $$ <mml:math xmlns:mml="http://www.w3.org/1998/M