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 …

The dawn of the twenty-first century came with very positive prospects for gravity, cosmology,
and astrophysics. Technological progress made it possible for cosmology to enter to its …

We review spherical and inhomogeneous analytic solutions of the field equations of Einstein
and of scalar–tensor gravity, including Brans–Dicke theory, non-minimally (possibly …

We consider a simple spherical model consisting of a Schwarzschild black hole of mass M
and a dark matter of mass ΔM around it. The general formula for the radius of black-hole …

We investigate the effects of quintessence dark energy on the shadows of black hole,
surrounded by various profiles of accretions. For the thin-disk accretion, the images of the …

Shadows and gravitational weak lensing by the Schwarzschild black hole in the string cloud
background with quintessential field - IOPscience This site uses cookies. By continuing to use …

This paper is devoted to studying thermodynamics and particle acceleration around charged
rotating BHs surrounded by perfect fluid dark matter. In the beginning, we discuss BH …

In the present work we study the geodesic motion and accretion process of a test particle
near an Anti-de Sitter (ADS) BH surrounded by a dark fluid with a Chaplygin-like equation …

Black holes with hair represented by generic fields surrounding the central source of the
vacuum Schwarzschild metric are examined under the minimal set of requirements …

We have explored the effect of both uniform and nonuniform distributed plasma medium on
gravitational lensing around static black hole in the presence of perfect fluid dark matter …