To have the correct picture of a black hole as a whole, it is of crucial importance to
understand its interior. The singularities that lurk inside the horizon of the usual Kerr …

It has been argued that ultracompact objects, which possess light rings but no horizons, may
be unstable against gravitational perturbations. To test this conjecture, we revisit the …

We explore a class of compact charged spheres made of a charged perfect fluid with a
polytropic equation of state. The charge density is chosen to be proportional to the energy …

We derive an exact Maxwell-Einstein metric for a spherically symmetric static perfect fluid
with mass and charge (Q), that electrifies the Tolman-VII metric and meets applicable …

We put independent model dynamical constraints on the net electric charge Q of some
astronomical and astrophysical objects by assuming that their exterior spacetimes are …

A family of charge analogues of a neutral solution with g 44=(1+ Cr 2) 6 has been obtained
by using a specific electric intensity, which involves a parameter K. Both neutral and charged …

We study information transmission over a fully correlated amplitude damping channel acting
on two qubits. We derive the single-shot classical channel capacity and show that …

The main aim of this paper is essentially to point out that the Buchdahl compactness limit of
a static object is given by gravitational field energy being less than or equal to half of its non …

Black holes are extreme spacetime deformations where even light is imprisoned. There is an
extensive astrophysical evidence for the real and abundant existence of these prisons of …

Considering electrically charged test particles, we continue our study of the exterior
dynamics of a charged Weyl black hole which has been previously investigated regarding …