We propose a logarithmic parametrization form of energy density for the scalar field dark
energy in the framework of the standard theory of gravity, which supports the necessary …

From the microscopic point of view, realistic black holes are time-dependent and the
teleological concept of the event horizon fails. At present, the apparent or trap** horizon …

In this paper, we investigate the phenomenon of the accelerated cosmic expansion in the
late universe and the mass accretion process for a four-dimensional Einstein-Aether black …

In this paper, we exhibit analytical solutions for the evolution of the mass of an astrophysical
object accreting cosmic fluid according to the Bondi–Hoyle–Lyttleton mechanism. The key …

Herein, we have discussed about the accretion of two extremely interesting forms of dark
energies, namely “Modified Chaplygin–Jacobi Gas”(MCJG) and “Modified Chaplygin–Abel …

We assume the most general static spherically symmetric black hole metric. The accretion of
any general kind of fluid flow around the black hole is investigated. The accretion of the fluid …

We study the adiabatic accretion process of ordinary baryonic gas onto spherically
symmetric black holes in Einstein-Maxwell-scalar theory, with two parameters α and β in the …

We present a theorem which allows one to recognize and classify the asymptotic behavior
and causal structure of McVittie metrics for different choices of scale factor, establishing …

We study backreaction of accreting matter onto a spherically symmetric black hole in a
perturbative way, when accretion is in a quasi-steady state. General expressions for …

We study the evolution of primordial black holes by considering present universe is no more
matter dominated rather vacuum energy dominated. We also consider the accretion of …