Fig. 6

Equilibrium bulk Lorentz factor resulting of the external Compton emission for different external photon sources. The geometry is described in Fig. 1 with the following parameters: finite and infinite accretion disk have an inner radius Rin = 3RS; the finite disk has an outer radius Rout = 5 × 104RS; Dtorus = 105RS, Rtorus = 5 × 104RS, RBLR = 103RS, and cosωmax = 0.9.
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