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Fast radio bursts (FRBs) are radio transients lasting only about a fewmilliseconds. They seem to occur at cosmological distances. We propose thatthese events can be originated in the collapse of the magnetosphere ofKerr-Newman black holes (KNBHs). We show that the closed orbits of chargedparticles in the magnetosphere of these objects are unstable. After examiningthe dependencies on the specific charge of the particle and the spin and chargeof the KNBH, we conclude that the resulting timescale and radiation mechanismfit well with the extant observations of FRBs. Furthermore, we argue that themerger of a KNBH binary is one of the plausible central engines for potentialgamma-ray or radio afterglow following a certain FRBs, and can also account forgravitational wave (GW) events like GW 150914. Our model leads to predictionsthat can be tested by combined multi-wavelength electromagnetic and GWobservations.

Fast radio bursts and their gamma-ray or radio afterglows as Kerr-Newman black hole binaries