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• W3207502242 abstract "Spinning black holes create electromagnetic storms when immersed in ambient magnetic fields, illuminating the otherwise epically dark terrain. In an electromagnetic extension of the Penrose process, tremendous energy can be extracted, boosting the energy of radiating particles far more efficiently than the mechanical Penrose process. We locate the regions from which energy can be mined and demonstrate explicitly that they are no longer restricted to the ergosphere. We also show that there can be toroidal regions that trap negative energy particles in orbit around the black hole. We find that the effective charge coupling between the black hole and the superradiant particles decreases as energy is extracted, much like the spin of a black hole decreases in the mechanical analogue. While the effective coupling decreases, the actual charge of the black hole increases in magnitude reaching the energetically-favored Wald value, at which point energy extraction is impeded. We demonstrate the array of orbits for products from the electromagnetic Penrose process." @default.
• W3207502242 created "2021-10-25" @default.
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• W3207502242 date "2021-10-15" @default.
• W3207502242 modified "2023-09-24" @default.
• W3207502242 title "Penrose process for a charged black hole in a uniform magnetic field" @default.
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• W3207502242 doi "https://doi.org/10.1103/physrevd.104.084059" @default.
• W3207502242 hasPublicationYear "2021" @default.
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