Radiation from accelerated black holes in an anti-de Sitter universe

TL;DR

This paper investigates gravitational and electromagnetic radiation emitted by uniformly accelerated charged black holes in anti-de Sitter spacetime, revealing complex directional radiation patterns influenced by acceleration and spacetime structure.

Contribution

It provides an explicit analysis of radiation patterns from accelerated black holes in anti-de Sitter space using the C-metric solution, highlighting differences from de Sitter-like cases.

Findings

Radiation patterns depend on null directions approaching conformal infinity.

Large acceleration divides infinity into domains with distinct null directions.

Radiation structure is more complex than in de Sitter-like spacetimes.

Abstract

We study gravitational and electromagnetic radiation generated by uniformly accelerated charged black holes in anti-de Sitter spacetime. This is described by the C-metric exact solution of the Einstein-Maxwell equations with a negative cosmological constant Lambda. We explicitly find and interpret the pattern of radiation that characterizes the dependence of the fields on a null direction from which the (timelike) conformal infinity is approached. This directional pattern exhibits specific properties which are more complicated if compared with recent analogous results obtained for asymptotic behavior of fields near a de Sitter-like infinity. In particular, for large acceleration the anti-de Sitter-like infinity is divided by Killing horizons into several distinct domains with a different structure of principal null directions, in which the patterns of radiation differ.