Schematic view of the AGN structure assumed in this work. Dust extends from the dust evaporation radius at pc/ 10 ≤ rin ≤ pc/2 up to distance of rout = 170 × rin from the black-hole (BH). We note that dust from the smooth disk emerges also as a diffuse component into the polar region. Dust clouds are pc sized with cube length of d = 3 × rin. The hot, warm and cold side of the clouds is indicated and for one clump their shadows. The accretion disk in the immediate black-hole environment and the jet is not treated.
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