Exploring Lorentz-violating effects of Kalb-Ramond field on charged black hole thermodynamics and photon dynamics

Shadows and gravitational weak lensing by the Schwarzschild black hole in the string cloud background with quintessential field*

Higher order corrections to deflection angle of massive particles and light rays in plasma media for stationary spacetimes using the Gauss-Bonnet theorem

Weak lensing in a plasma medium and gravitational deflection of massive particles using the Gauss-Bonnet theorem. A unified treatment