Comparison between UFO velocities from the literature (dots and squares) and the results of the present work as a function of λ_Edd. The theoretical limit according to the terminal velocity, v_t, for R₀ ≥ 50 r_G corresponds to the orange shaded area. The limit according to the maximum (but short-lived) velocity, v_max, corresponds to the light-blue area. See Appendix E for a description of the sample and the related references.