Shadow of a rotating braneworld black hole

Understand

We investigate the shadow cast by a rotating braneworld black hole, in the Randall-Sundrum scenario.

• In addition to the angular momentum, the tidal charge term deforms the shape of the shadow.
• For a given value of the rotation parameter, the presence of a negative tidal charge enlarges the shadow and reduces its deformation with respect to Kerr spacetime, while for a positive charge, the opposite effect is obtained.
• We also analyze the case in which the combination of the rotation parameter and the tidal charge results in a naked singularity.