Higher dimensional theories admit astrophysical objects like supermassive
black holes, which are rather different from standard ones, and their
gravitational lensing features deviate from general relativity. It is well
known that a black hole shadow is a dark region due to the falling geodesics of
photons into the black hole and, if detected, a black hole shadow could be used
to determine which theory of gravity is consistent with observations.
Measurements of the shadow sizes around the black holes can help to evaluate
various parameters of the black hole metric. We study the shapes of the shadow
cast by the rotating five-dimensional charged Einstein-Maxwell-Chern-Simons
(EMCS) black holes, which is characterized by the four parameters, i.e., mass,
two spins, and charge, in which the spin parameters are set equal. We integrate
the null geodesic equations and derive an analytical formula for the shadow of
the five-dimensional EMCS black hole, in turn, to show that size of black hole
shadow is affected due to charge as well as spin. The shadow is a dark zone
covered by a deformed circle, and the size of the shadow decreases with an
increase in the charge q when compared with the five-dimensional Myers-Perry
black hole. Interestingly, the distortion increases with charge q. The effect
of these parameters on the shape and size of the naked singularity shadow of
five-dimensional EMCS black hole is also discussed.Comment: 27 pages, 9 figures, matches with published versio
