Fig. 5: Impact of annulus number on ray trajectories.
From: Optical analogues to the equatorial Kerr–Newman black hole
The angular deviation of the ray trajectory (Φray) from the geodesic (Φgeo) at the horizon for an optical Schwarzschild black hole with outer radius P0 = 6, as a function of the initial impact parameter \(\hat{b}_\infty\) and number of annuli used in the construction.
