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arXiv · 1112.6349

Shadow of a rotating braneworld black hole

Leonardo Amarilla·Ernesto F. Eiroa
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Abstract

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. We discuss the observational prospects corresponding to the supermassive black hole at the Galactic center.

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Leonardo Amarilla, Ernesto F. Eiroa. 2012-03-16. Shadow of a rotating braneworld black hole. https://doi.org/10.1103/physrevd.85.064019

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