Charge, geometry, and effective mass in the Kerr-Newman solution to the Einstein field equations

TL;DR

This paper extends the analysis of charge and effective mass from Reissner-Nordstrom to Kerr-Newman black holes, exploring their geometric and physical properties within Einstein's field equations.

Contribution

It provides a detailed discussion of charge, geometry, and effective mass specifically in the Kerr-Newman solution, building on prior work on Reissner-Nordstrom black holes.

Findings

Charge results in negative curvature in Kerr-Newman spacetime

Effective mass analysis reveals unique geometric signatures

Extension of charge and mass properties from Reissner-Nordstrom to Kerr-Newman

Abstract

It has been shown that for the Reissner-Nordstrom solution to the vacuum Einstein field equations charge, like mass, has a unique space-time signature [Found. Phys. 38, 293-300 (2008)]. The presence of charge results in a negative curvature. This work, which includes a discussion of effective mass, is extended here to the Kerr-Newman solution.