Kerr black holes in a magnetic universe

We present exact expressions for the electromagnetic fields associated with arbitrarily charged Kerr–Newman black holes in a magnetic universe. In the particular case of charge Q=2 B0 J, where B0 is the magnetic field parameter and J=ma is the angular momentum, exact expressions for the gravitational field are also presented, while for arbitrarily charged black holes metrical corrections of order B0 are evaluated.

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