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 …

Searching for violations of the no-hair theorem (NHT) is a powerful way to test gravity, and
more generally fundamental physics, particularly with regards to the existence of additional …

The bumblebee gravity model, with a vector field nonminimally coupled to gravity, is a
natural extension of the Einstein-Maxwell theory. In this theory, a black hole can carry a …

In this review, various researches on finding the bending angle of light deflected by a
massive gravitating object which regard the Gauss-Bonnet theorem as the premise have …

In this letter we obtain wormhole solutions from the Karmarkar condition in f (Q) gravity
formalism, in which Q is the nonmetricity scalar. We show that the combination of such …

Motivated by (i) more and more interest in strong gravitational lensing by supermassive
black holes due to the achievement of EHT observations,(ii) the ongoing popular topic on …

The nonminimal coupling of the nonzero vacuum expectation value of the self-interacting
antisymmetric Kalb-Ramond field with gravity leads to a power-law hairy black hole having a …

In recent years there has been a growing interest in the field of Casimir wormhole. In
classical general relativity (GR), it is known that the null energy condition (NEC) has to be …

In this paper, we investigate Schwarzschild-like black holes within the framework of metric-
affine bumblebee gravity. We explore the implications of such a gravitational setup on …

The Lorentz symmetry of gravity is spontaneously broken when the nonminimally coupled
Kalb-Ramond field acquires a nonzero vacuum expectation value. In this work, we present …