Ringing of the Regular Black Hole with Asymptotically Minkowski Core

A Regge–Wheeler analysis is performed for a novel black hole mimicker ‘the regular with asymptotically Minkowski core’, followed by an approximation of the permitted quasi-normal modes propagating waveforms. first-order WKB computed spin zero and one perturbations candidate spacetime. Subsequently, numerical results analysing respective fundamental are compiled various values parameter (which quantifies distortion from Schwarzschild spacetime), multipole numbers ?. Both electromagnetic fluctuations scalar on background spacetime found to possess shorter-lived, higher-energy signals than their counterparts specific range interesting parameter. Comparison between these some analogous both Bardeen Hayward holes considered. Analysis as what happens when permits potential itself then conducted, first in full generality, before specialising general result presented explicating shift under perturbation potential.