Fig. 2.
Power spectral density in the 0.3–0.7 keV energy band (black line), 0.7–1.5 keV (blue line), and 3–5 keV (red line) with rtrc = 10rg and rsh = 5rg. The soft and hard zones of the inner flow have the spectral photon indices Γs = 2.5 and Γh = 2.0, respectively. We fix NF = 0.5 so that all energy bands are different due to the values of the intrinsic flux ratio Fs/Fh.
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