a) Photosphere radius for photons with E = 0.1, 1, and 10 GeV from bottom to top as a function of λ_2−10keV in the model with δ = 10^-3, a = 0.95, β = 1 (in other models the dependence of r_ph on λ_2−10keV is very similar). b) λ_1−10GeV as a function of λ_2−10keV in models with η_p> 0 and s = 2.1; the dotted lines plot models N with δ = 10^-3, (magenta) circles indicate models N with a = 0.95 and β = 9 with ṁ = 0.05, 0.1, and 0.3, (green) squares stand for a = 0, β = 9, ṁ = 0.1, 0.3 and 0.5; the dashed lines show models H_0.1 with δ = 10^-3, (black) circles models with a = 0.95, β = 1 with ṁ = 0.033, 0.1, 0.3 and 0.5; (blue) squares indicate a = 0.95, β = 1 with ṁ = 0.1, 0.3, 0.5, 0.8 and 1.2; the solid lines show models N with δ = 0.5, (red) squares depict a = 0, β = 1 with ṁ = 0.004, 0.01, 0.033, 0.1 and 0.3; (orange) circles stand for a = 0.95, β = 9 with ṁ = 0.003, 0.01, 0.033 and 0.1. c) The high-energy part of the observed spectra of leptonic emission. (Black) solid lines indicate model H_0.1 with δ = 10^-3, a = 0.95, β = 1 and ṁ = 0.033, 0.1, 0.3; (red) dashed lines show model N with δ = 0.5, a = 0, β = 1 and ṁ = 0.004, 0.01, 0.033, 0.1; (blue) dotted line shows model N with δ = 0.5, a = 0.95, β = 9 and ṁ = 0.01.