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 …

We discuss a proposal on how gravitational collapse of a null energy condition violating
spherically symmetric fluid distribution can avoid the formation of a zero proper volume …

We investigate the geodesic motion in the background of the Kerr–Sen black hole arising in
heterotic string theory. The nature of the effective potential is discussed in the radial, as well …

One of the strongest tools to verify the predictions of general relativity (GR) has been the
gravitational lensing around various compact objects. Using a dual charged stringy black …

In this paper, we investigate the null geodesics of the static-charged black hole in heterotic
string theory. A detailed analysis of the geodesics are done in the Einstein frame as well as …

Gravitational lensing and black hole shadows are one of the strongest observational
evidences to prove the existence of black holes in the universe. The gravitational lensing …

We investigate the dynamical behavior of phantom energy near a stringy magnetically
charged black hole. For this purpose, we derive equations of motion for steady-state …

We investigate the stability of both timelike as well as null circular geodesics in the vicinity of
a dual (3+ 1) dimensional stringy black hole (BH) spacetime by using an excellent tool so …

We study the time-like geodesics and geodesic deviation for a two-dimensional (2D) stringy
black hole (BH) spacetime in Schwarzschild gauge. We have analyzed the properties of …

We study the kinematics of timelike geodesic congruences, in the spacetime geometry of
rotating black holes in three [the Bañados-Teitelboim-Zanelli (BTZ)] and four (the Kerr) …