Gravitational and electromagnetic signatures of accretion into a charged black hole

Abstract

We present the derivation and the solutions to the coupled electromagnetic and gravitational perturbations with sources in a charged black hole background. We work in the so called ghost gauge and consider as source of the perturbations the infall of radial currents. In this way, we study a system in which it is provoked a response involving both, gravitational and electromagnetic waves, which allows us to analyze the dependence between them. We solve numerically the wave equations that describe both signals, characterize the waveforms and study the relation between the input parameters of the infalling matter with those of the gravitational and electromagnetic responses.

17 pages, 9 figures

References in corpus (5)

• GW151226: Observation of Gravitational Waves from a 22-Solar-Mass Binary Black Hole Coalescence
• Collisions of charged black holes
• On the accretion-induced QNM excitation of a Schwarzschild black hole
• The properties of hypervelocity stars and S-stars originating from an eccentric disc around a supermassive black hole
• Electromagnetic partner of the gravitational signal during accretion onto black holes

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• Immortality through the dark forces: Dark-charge primordial black holes as dark matter candidates