General relativity has been widely tested in weak gravitational fields but still stands largely
untested in the strong-field regime. According to the no-hair theorem, black holes in general …

Abstract The Galactic Center (GC) of the Milky Way, thanks to its proximity, allows to perform
astronomical observations that investigate physical phenomena at the edge of astrophysics …

We study shadows cast by a certain class of rotating wormholes and point out the crucial
role of a rotating wormhole throat in the formation of a shadow. Overlooking this crucial role …

In this paper, we investigate the effects of a dark matter (DM) spike on the neighborhood of
Sgr A*, the black hole (BH) in the center of the Milky Way. Our main goal is to investigate …

The Newman-Janis (NJ) algorithm has been extensively used in the literature to generate
rotating black hole solutions from nonrotating seed spacetimes. In this work, we show, using …

The shadow of a rotating non-Kerr black hole has been studied, and it was shown that in
addition to the specific angular momentum a, the deformation parameter of non-Kerr …

We investigate the shadow cast by a rotating braneworld black hole, in the Randall-
Sundrum scenario. In addition to the angular momentum, the tidal charge term deforms the …

A black hole casts a shadow as an optical appearance because of its strong gravitational
field. We study the shadow cast by the five-dimensional Myers-Perry black hole with equal …

We study the shadow produced by a spinning Kaluza-Klein black hole in Einstein gravity
coupled to a Maxwell field and a dilaton. The size and the shape of the shadow depend on …

It is believed that curvature singularities are a creation of general relativity and, hence, in the
absence of a quantum gravity, models of nonsingular black holes have received significant …