Perturbations of black holes, initially considered in the context of possible observations of
astrophysical effects, have been studied for the past 10 years in string theory, brane-world …

Perturbations of stars and black holes have been one of the main topics of relativistic
astrophysics for the last few decades. They are of particular importance today, because of …

Extracting quasinormal modes from compact binary mergers to perform black hole
spectroscopy is one of the fundamental pillars in current and future strong-gravity tests …

Gravitational waves emitted by perturbed black holes or relativistic stars are dominated
byquasinormal ringing', damped oscillations at single frequencies which are characteristic of …

We study characteristic (quasinormal) modes of a D-dimensional Schwarzschild black hole.
It is shown that the real parts of the complex quasinormal modes, representing the real …

This work investigates several key aspects of a non-commutative theory with mass
deformation. We calculate thermodynamic properties of the system and compare our results …

In the analysis of a binary black hole coalescence, it is necessary to include gravitational self-
interactions in order to describe the transition of the gravitational wave signal from the …

The purpose of this chapter is to provide an overview of the exciting field of black hole quasi-
normal modes and its capabilities to test general relativity in the 21st century. After …

We present an improvement of the continued fraction technique for the numerical calculation
of quasinormal modes of Schwarzschild black holes. On this basis it becomes possible to …

In this work, we present the inverted harmonic oscillator (IHO) Hamiltonian as a paradigm to
understand the quantum mechanics of scattering and time-decay in a diverse set of physical …