Optical depth τ_γγ map for a gamma-ray photon of energy ϵ₁ = 1 GeV, integrated along the line of sight up to the observer situated at infinity. The compact object is a M_co = 20 M_⊙ black hole accreting at Ṁ_acc = 10^-8 M_⊙ yr^-1. The inner radius of the disk is R_in = 6 r_g ≈ 1.8 × 10⁷ cm and the outer radius is R_out = 8 × 10⁸ cm. The altitudes z ≡ R_in and z ≡ R_out are indicated by dotted lines. Absorption is calculated with the temperature profile given in Eq. (4). Primary gamma rays are injected along the axis of the disk at an altitude z (r ≡ 0). The observer sees the disk with an inclination ψ. Bright regions indicate low opacity or “unabsorbed” regions, and dark regions high opacity or “absorbed” regions. Level lines τ_γγ = 10^-2, 10^-1, 1, 10, 10² are overplotted.