Absorption rate of the Kerr-de Sitter black hole and the Kerr-Newman-de Sitter black hole

TL;DR

This paper derives an analytic formula for the absorption rates of Kerr-de Sitter and Kerr-Newman-de Sitter black holes using solutions to the Teukolsky equation, advancing understanding of their interaction with fields.

Contribution

It provides the first explicit analytic expressions for absorption rates in these black hole geometries, extending previous numerical or approximate methods.

Findings

Analytic absorption rate formulas derived for Kerr-de Sitter and Kerr-Newman-de Sitter black holes.

The formulas enable precise calculations of black hole absorption properties.

The work enhances theoretical understanding of black hole field interactions.

Abstract

By using an analytic solution of the Teukolsky equation in the Kerr-de Sitter and Kerr-Newman-de Sitter geometries, an analytic expression of the absorption rate formulae for these black holes is calculated.