Time-averaged broad band spectrum of HE 0435-4312 in the IR and optical band (points) in the rest frame (red stars – WISE, blue triangles – 2MASS, red open squares – USNO, filled magenta square – mean Catalina level, black squares – GALEX), together with the parametric fit by the disk (see Sect. 4.5) with the black hole mass M = 2.2 × 109M⊙, accretion rate ṁ = 0.58 in Eddington units, viewing angle i = 23°, and non-rotating black hole spin a = 0. The mid-IR contribution likely comes from the circumnuclear dust and it was modeled as a black body of a temperature of 1100 K (cyan dashed line). Data points are not simultaneous.
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