Bumblebee gravity with a Kerr-Sen-like solution and its Shadow

Understand

Lorentz-Violating (LV) scenario gets involved through a bumblebee field vector field $B_\mu$.

• A spontaneous symmetry breaking allows the field to acquires a vacuum expectation value that generates LV into the system.
• A Kerr-Sen-like solution has been found out starting from the generalized form of a radiating stationery axially symmetric black-hole metric.
• We compute the effective potential offered by the null geodesics in the bumblebee rotating black-hole spacetime.