Black Hole and Equipotential Photon Surface Uniqueness in 4-dimensional Asymptotically Flat Electrostatic Electro-Vacuum Spacetimes

Abstract

We study 4-dimensional asymptotically flat electrostatic electro-vacuum spacetimes with a connected black hole, photon sphere, or equipotential photon surface inner boundary. Our analysis, inspired by the potential theory approach by Agostiniani-Mazzieri, allows to give self-contained proofs of known uniqueness theorems of the sub-extremal, extremal and super-extremal Reissner-Nordström spacetimes. We also obtain new results for connected photon spheres and for connected photon surfaces in the extremal case. Finally, we provide, up to a restriction on the range of their radii, the uniqueness result for connected (both non-degenerate and degenerate) photon surfaces in the super-extremal case, not yet treated in the literature.

63 pages

References in corpus (7)

• Aspherical Photon and Anti-Photon Surfaces
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• Metamorphoses of a photon sphere
• Uniqueness of static photon surfaces: Perturbative approach
• Photon sphere uniqueness in higher-dimensional electrovacuum spacetimes
• Nonexistence of Degenerate Horizons in Static Vacua and Black Hole Uniqueness
• Analyticity of strictly static and strictly stationary, inheriting and non-inheriting Einstein-Maxwell solutions

Cited by in corpus (1)

• Uniqueness of equipotential photon surfaces in 4-dimensional static vacuum asymptotically flat spacetimes for positive, negative, and zero mass -- and a new partial proof of the Willmore inequality