The radial Teukolsky equation for Kerr-Newman-de Sitter geometry: Revisited
arXiv:2004.09132
Abstract
We use Heun type solutions given in \cite{Suzuki} for the radial Teukolsky equation, written in the background metric of the Kerr-Newman-de Sitter geometry, to calculate the quasinormal frequencies for polynomial solutions and the reflection coefficient for waves coming from the de Sitter horizon and reflected at the outer horizon of the black hole.
7 pages. We add a paragraph, some references and corrected some typoes