Mimicking a rotating black hole with nonlinear electrodynamics

TL;DR

This paper presents the first analogue model of a rotating black hole using nonlinear electrodynamics, demonstrating features like ergosurfaces and horizons similar to Kerr black holes in Minkowski spacetime.

Contribution

It introduces a novel analogue model of a rotating black hole based on nonlinear electrodynamics with a Kerr-like optical metric.

Findings

The model predicts the existence of an ergosurface and horizon.

The optical metric has a Kerr-Schild form.

The model replicates key features of Kerr black holes.

Abstract

We exhibit the first analogue model of a rotating black hole constructed in the framework of nonlinear electrodynamics. The background electromagnetic field is assumed to be algebraically special and adapted to a geodesic shear-free congruence of null rays in Minkowski spacetime, the Kerr congruence. The corresponding optical metric has a Kerr-Schild form and, it is shown to be characterized by three parameters, thus predicting the existence of an ergosurface, a horizon, and a slice identical to one also present in the Kerr metric.