Gravitational and electromagnetic fields near a de Sitter-like infinity

TL;DR

This paper characterizes the behavior of gravitational and electromagnetic fields near de Sitter-like infinity, revealing a universal directional pattern of radiation dependent on the spacetime's algebraic type.

Contribution

It introduces a detailed analysis of the directional dependence of radiative fields near de Sitter-like infinity, extending the standard peeling behavior.

Findings

Radiation vanishes along directions opposite to principal null directions.

The directional pattern of radiation is universal and determined by Petrov type.

Explicit dependence of radiative components on null directions is established.

Abstract

We present a characterization of general gravitational and electromagnetic fields near de Sitter-like conformal infinity which supplements the standard peeling behavior. This is based on an explicit evaluation of the dependence of the radiative component of the fields on the null direction from which infinity is approached. It is shown that the directional pattern of radiation has a universal character that is determined by the algebraic (Petrov) type of the spacetime. Specifically, the radiation field vanishes along directions opposite to principal null directions.