Degollado, Juan Carlos; Gualajara, Victor; Moreno, Claudia; Núñez, Darío Electromagnetic partner of the gravitational signal during accretion onto black holes. (English) Zbl 1308.83086 Gen. Relativ. Gravitation 46, No. 11, Article ID 1819, 18 p. (2014). Summary: We investigate the generation of electromagnetic and gravitational radiation in the vicinity of a perturbed Schwarzschild black hole. The gravitational perturbations and the electromagnetic field are studied by solving the Teukolsky master equation with sources, which we take to be locally charged, radially infalling, matter. Our results show that, in addition to the gravitational wave generated as the matter falls into the black hole, there is also a burst of electromagnetic radiation. This electromagnetic field has a characteristic set of quasinormal frequencies, and the gravitational radiation has the quasinormal frequencies of a Schwarzschild black hole. 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