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 …

We investigate the gravitational lensing effect around a spherically symmetric black hole,
whose metric is obtained from the Einstein field equation with electric charge and perfect …

The study of charged particle dynamics in the combined gravitational and magnetic field can
provide important theoretical insight into astrophysical processes around black holes. In this …

Spin of a test particle is a fundamental property that can affect its motion in a gravitational
field. In this work we consider the effect of particle spin on its deflection angle and …

In this study, we explore the properties of a non-rotating black hole in the Einstein-Maxwell-
scalar (EMS) theory and investigate the luminosity of the accretion disk surrounding it. We …

We derive the exact solutions for electrically charged black holes both in the absence and
presence of a cosmological constant in the gravitational theory with Lorentz violation …

Equations of a rotating body with one point constrained to move freely on a plane (dancing
top) are deduced from the Lagrangian variational problem. They formally look like the Euler …

We investigate the dynamics of spinning particles with an electric charge orbiting electrically
charged Kerr–Newman black holes. First, we derive the equations of motion for the test …

In this paper, we consider a well-established magnetic Penrose process (MPP) and bring
out its impact on the efficiency of energy extraction from higher dimensional (ie, D> 4) black …

Exploring the effect of exotic fields around black holes on particle dynamics may help to
understand the nature of dark matter and energy. The quintessential field can be treated as …