Snapshots of the gas density ρ (top row) and radiation energy density E_r,0 (bottom row) during the passage of the solid sphere through the AGN disk, at four successive times t = 0.021,  0.092,  0.164,  and 0.246 T₀ (left to right). The white solid and dotted contours mark the surface where the electron-scattering optical depth integrated from above reaches τ_es = 1 and 7.