The recent time witnessed a surge of interest in strong gravitational lensing by black holes is
due to the Event Horizon Telescope (EHT) results, which suggest comparing the black hole …

We study the motion of electrically charged particles, magnetic monopoles, and magnetic
dipoles around electrically and magnetically charged stringy black holes. From the analysis …

We have studied the effect of both (i) uniformly and (ii) non-uniformly distributed plasma on
gravitational lensing around static black hole in Horndeski gravity. It is observed that the …

In this work we have obtained a charged black hole solution in the presence of perfect fluid
dark matter (PFDM) and discuss its energy conditions. The metric corresponding to the …

Recently, an analytical study of radial and circular orbits for null and time-like geodesics that
propagate in the spacetime produced by a Schwarzschild black hole associated with cloud …

Celebrating the centennial of its first experimental test, the theory of General Relativity (GR)
has successfully and consistently passed all subsequent tests with flying colors. It is …

Einstein-Maxwell-dilaton-axion (EMDA) gravity provides a simple framework to investigate
the signatures of string theory. The axion and the dilaton fields arising in EMDA gravity have …

We calculate the exact solutions to the equations of motion that govern the light ray
trajectories as they travel in a Kerr black hole's exterior that is considered to be filled with an …

We derive new constraints on the dilaton parameter appearing in the spherically-symmetric
black hole solution of Einstein-Maxwell-dilaton-axion gravity, by studying the geodesic …

As is well-known, black hole plays an important role in probing the quantum effects of gravity
in the strong-field regime. In this paper, we focus on a polymerized black hole and …