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 …

We study here circular timelike geodesics in the Janis-Newman-Winicour and Gamma
metric spacetimes which contain a strong curvature naked singularity and reduce to the …

We develop here a new procedure within Einstein's theory of gravity to generate equilibrium
configurations that result as the final state of gravitational collapse from regular initial …

Gravitational collapse is one of the most fruitful subjects in gravitational physics. It is well
known that singularity formation is inevitable in complete gravitational collapse. It was …

We study strong gravitational lensing in a static, spherically symmetric, naked singularity
spacetime, without a photon sphere. The nature of the singularity is found to be lightlike. We …

We study the motion of test particles in the gravitational field of a Schwarzschild black hole
surrounded by a spherical dark matter cloud with nonzero tangential pressure, and compute …

The final fate of the spherically symmetric collapse of a perfect fluid which follows the γ-law
equation of state and adiabatic condition is investigated. Full general relativistic …

The final fate of gravitational collapse of massive stars has been a subject of interest for a
long time since such a collapse may lead to black holes and naked singularities alike. Since …

Though the cosmic censorship conjecture states that spacetime singularities must be hidden
from an asymptotic observer by an event horizon, naked singularities can form as the end …

Motivated by the lack of rotating solutions sourced by matter in General Relativity as well as
in modified gravity theories, we extend a recently discovered exact rotating solution of the …