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Kerr-Newman metric
The Kerr-Newman metric is a solution of Einstein's general relativity field equation that describes the spacetime geometry in the exterior region around a charged (Qneq0), rotating (Jneq0) black hole of mass m. Like the Kerr metric, the interior solution exists mathematically and satisfies Einstein's field equations, but is probably not representative of the actual metric of a physical black hole due to stability issues.
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