Topical Review: Greybody Factors and Quasinormal Modes for Black Holes in Various Theories -- Fingerprints of Invisibles

TL;DR

This review introduces black hole greybody factors and quasinormal modes, emphasizing recent advances in their calculation for various geometries, revealing potential signatures of invisible phenomena through radiation spectra analysis.

Contribution

It provides a comprehensive overview of recent developments in calculating GFs and QNMs for diverse black hole geometries, highlighting methods like WKB and Bogoliubov coefficient bounds.

Findings

Identification of characteristic radiation spectra signatures.

Application of WKB and Bogoliubov coefficient bounding methods.

Insights into the fingerprints of invisible phenomena.

Abstract

We give a pedagogical introduction to black holes (BHs) greybody factors (GFs) and quasinormal modes (QNMs) and share the recent developments on those subjects. In this study, our primary focus will be on the bosonic and fermionic GFs and QNMs of various BH and brane geometries and reveal the fingerprints of the invisibles with the radiation spectra to be obtained by the WKB approximation and bounding the Bogoliubov coefficients (together with the Miller-Good transformation) methods. (*Due to the notification of arXiv "The Abstract field cannot be longer than 1,920 characters", the appeared Abstract is shortened. For the full Abstract, please download the Article.)