An exact rotating black-hole solution in pure Einstein-Maxwell theory admits a cosmological horizon whose radius is set by the electromagnetic field strength alone.
Supersymmetry of the static Reissner-Nordstr\"om black hole in Bertotti-Robinson ($\mathrm{AdS}_2 \times \mathbb{S}^2$)
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abstract
We examine supersymmetry of charged and accelerating black holes embedded in a Bertotti-Robinson universe, in the context of $N=2$, $D=4$ supergravity. After a review of the solution, we study the constraints that guarantee supersymmetry and explicitly compute the Killing spinors of the spacetime. We show that the supersymmetric solution saturates the BPS bound, and we use this result to compute the mass of the black hole and to analyze the thermodynamics of the solution. Finally, we present a generalization of the extremal solution to include the cosmological constant.
years
2026 2representative citing papers
Constructs multi-center extremal black hole solutions in Bertotti-Robinson spacetime via monodromy-matrix factorization, producing Majumdar-Papapetrou-type metrics with AdS2 × S2 near-horizons and BR asymptotics.
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New Rotating Black Hole in Electromagnetic Fields: Cosmological Horizon without Cosmological Constant
An exact rotating black-hole solution in pure Einstein-Maxwell theory admits a cosmological horizon whose radius is set by the electromagnetic field strength alone.
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Multi--black holes in Bertotti--Robinson spacetime
Constructs multi-center extremal black hole solutions in Bertotti-Robinson spacetime via monodromy-matrix factorization, producing Majumdar-Papapetrou-type metrics with AdS2 × S2 near-horizons and BR asymptotics.