A uniqueness theorem for degenerate Kerr-Newman black holes

TL;DR

This paper proves that under certain conditions, the structure of degenerate Kerr-Newman black holes is uniquely determined, extending the understanding of black hole solutions in general relativity.

Contribution

It establishes a uniqueness theorem for degenerate Kerr-Newman black holes, showing they are characterized by their domain of dependence under specified conditions.

Findings

Degenerate Kerr-Newman black holes are uniquely determined by their domain of dependence.

The theorem applies to stationary, analytic, electrovacuum spacetimes with a connected, rotating, degenerate horizon.

The result extends the classification of black hole solutions in general relativity.

Abstract

We show that the domains of dependence of stationary, $I^+$-regular, analytic, electrovacuum space-times with a connected, non-empty, rotating, degenerate event horizon arise from Kerr-Newman space-times.