We introduce a systematic and direct procedure to generate hairy rotating black holes by deforming a spherically symmetric seed solution. We develop our analysis in the context of the gravitational decoupling approach, without resorting to the Newman-Janis algorithm. As examples of possible applications, we investigate how the Kerr black hole solution is modified by a surrounding fluid with conserved energy- momentum tensor. We find nontrivial extensions of the Kerr and Kerr-Newman black holes with primary hair. We prove that a rotating and charged black hole can have the same horizon as Kerr’s, Schwarzschild’s, or Reissner-Nordström’s, thus showing possible observational effects of matter around black holes.

Gravitational decoupling for axially symmetric systems and rotating black holes

Casadio, R.
2021

Abstract

We introduce a systematic and direct procedure to generate hairy rotating black holes by deforming a spherically symmetric seed solution. We develop our analysis in the context of the gravitational decoupling approach, without resorting to the Newman-Janis algorithm. As examples of possible applications, we investigate how the Kerr black hole solution is modified by a surrounding fluid with conserved energy- momentum tensor. We find nontrivial extensions of the Kerr and Kerr-Newman black holes with primary hair. We prove that a rotating and charged black hole can have the same horizon as Kerr’s, Schwarzschild’s, or Reissner-Nordström’s, thus showing possible observational effects of matter around black holes.
2021
Contreras, E.; Ovalle, J.; Casadio, R.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/798487
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