We study the possibility of identifying dark matter in the galactic center from the physical
properties of the electromagnetic radiation emitted from an optically-thin disk region around …

The prospect of identifying wormholes by investigating the shadows of wormholes constitute
a foremost source of insight into the evolution of compact objects and it is one of the …

Metric of axially symmetric asymptotically flat black holes in an arbitrary metric theory of
gravity can be represented in the general form which depends on infinite number of …

The timelike and null-like geodesics around compact objects are some of the best tools to
classify and understand the structure of a space-time. We study the null geodesics around …

The null geodesics of the regular and rotating magnetically charged black hole in a non-
minimally coupled Einstein-Yang-Mills theory surrounded by a plasma medium is studied …

We study the properties of the null geodesics of four-dimensional Einstein–Gauss–Bonnet
(4D EGB) black holes surrounded by quintessence matter, recently derived by Shah et …

In general, energy extraction methods such as the Penrose process and the magnetic
Penrose process are thought to be reliant on the existence of an ergoregion. Inside an …

In this paper, the Penrose process is used to extract rotational energy from regular black
holes. Initially, we consider the rotating Simpson–Visser regular spacetime, which describes …

Most black hole solutions are characterized with asymptotically flat, or asymptotically (anti)
de-Sitter behaviors, but some black holes with unusual asymptotics have also been …

It is expected that the astrophysical black holes are surrounded by a luminous accretion flow
that is a necessary ingredient for imaging a black hole. In this paper, we study the influence …