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Fig. 9.
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As in Fig. 4, but assuming different values for coronal optical depth (τ). In both panels, the wedge opening angle is set to α = 30°, the spin of the BH is set to a = 0, the inner radius of the corona is set to Rcorona = 6RG, and the inner radius of the AD to Rdisk = 25RG. When τ decreases, Π increases.
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