  We investigate the shadow behaviors of the superentropic black holes in
arbitrary dimensions. Using the Hamilton-Jacobi mechanism, we first obtain the
associated null geodesic equations of motion. By help of a spheric
stereographic projection, we discuss the shadows in terms of one-dimensional
real curves. Fixing the mass parameter m, we obtain certain shapes being
remarkably different than four dimensional geometric configurations. We then
study theirs behaviors by varying the black hole mass parameter. We show that
the shadows undergo certain geometric transitions depending on the spacetime
dimension. In terms of a critical value mc, we find that the four dimensional
shadows exhibit three configurations being the D-shape, the cardioid and the
naked singularity associated with m > mc, m = mc and m < mc, respectively. We
reveal that the D-shape passes to the naked singularity via a critical curve
called cardioid. In higher dimensions, however, we show that such transitional
behaviors are removed.

High Energy Physics - Theory;General Relativity and Quantum Cosmology