Horizon-scale images of black holes (BHs) and their shadows have opened an
unprecedented window onto tests of gravity and fundamental physics in the strong-field …

Searching for violations of the no-hair theorem (NHT) is a powerful way to test gravity, and
more generally fundamental physics, particularly with regards to the existence of additional …

We study the tideless traversable wormholes in the f (R) gravity metric formalism. First we
consider three shape functions of wormholes and study their viabilities and structures. The …

In this paper, we investigate the gravitational lensing effects in the weak and strong field
limits of a static black hole with conformally coupled scalar field. In the weak field limit, with …

We consider the propagation of a charged massive scalar field in the background of a four-
dimensional Ernst black hole and study its stability analyzing the quasinormal modes …

In recent times, the study of the Casimir effect in quantum field theory has garnered
increasing attention because of its potential to be an ideal source of exotic matter needed for …

We compute the quasinormal frequencies for scalar perturbations of hairy black holes in four-
dimensional Einstein-Maxwell-dilaton theory assuming a non-trivial scalar potential for the …

We construct conformally scalar NUT-like dyon black holes in nonlinear electrodynamics
(NLE) which possess conformal and duality-rotation symmetries and are characterized by a …

The influence of the angular momentum of the particle on the Lyapunov exponent has been
studied. In this paper, we investigate influences of the charge and angular momentum of a …

The 'no-hair'conjecture claims that for a spherically symmetric black hole, only the
information regarding the mass and charge of the black hole is available to an external …