Fig. 3
From: Event Horizon Telescope observations exclude compact objects in baseline mimetic gravity
Mimetic black hole photon sphere, shadow, and effective potential. Left panel: evolution of the size of the photon ring (red dot-dashed curve) and shadow (black solid curve) of the mimetic black hole as a function of the parameter \(r_f.\) The dark green and light green (dark blue and light blue) regions are consistent with the EHT image of M87\(^{\star }\) [Sgr A\(^{\star }\)] at \(1\sigma\) and \(2\sigma\) respectively. Right panel: Effective potential profile of the mimetic black hole space-time, for both the exterior (cyan solid curve) and interior (magenta dot-dashed curve) solutions, with the dashed vertical curve indicating the location of the apparent horizon at \(r_H=2M.\)
