The well-known correspondence between quasinormal modes of any stationary, spherically
symmetric and asymptotically flat or de Sitter black hole and parameters of the circular null …

A bstract We explore analytical aspects of correlators involving Dirac spinors in d+ 1-
dimensional de Sitter space. Adapting the formalism of Sleight and Taronna, we show how …

Hod's proposal claims that the least damped quasinormal mode of a black hole must have
the imaginary part smaller than half of the surface gravity at the event horizon. The Strong …

It was recently shown that the Strong Cosmic Censorship conjecture might be violated for
near-extremally-charged black holes in de Sitter space. Here, we extend our study to …

We calculate the exact values of the quasinormal frequencies for an electromagnetic field
and a gravitational perturbation moving in D-dimensional de Sitter spacetime (D≥ 4). We …

Abstract Bardeen de-Sitter (BdS) black hole is a spherically symmetric solution of Einstein's
equation which is coupled to nonlinear electromagnetic field in a way that one gets a regular …

We study the quasinormal spectrum of a massive scalar field in a D-dimensional black hole
background. We found a qualitatively different dependence of the fundamental modes on …

We investigate the charged scalar field propagating in a (2+ 1) charged Bañados-Teitelboim-
Zanelli black hole. The conditions for stability are studied unveiling, for each black hole …

Massive perturbations in asymptotic flat black holes leave a distinct signature in their late-
time evolution “tail”: an oscillatory behavior modulated by the Compton wavelength of the …

We find exact solutions of the Dirac equation in the 2+ 1 dimensional curved background by
separation of variables. These solutions are given in terms of hypergeometric functions. We …