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Fig. 10
Evolution of the coherence, γ2, with spectral shape represented by the soft photon index Γ1 of the broken power law. The color scale represents averaged γ2 values at individual Fourier frequencies fi. Upper panel: 
between bands 4 and 3, middle panel: 
between bands 4 and 2, lower panel: 
between bands 4 and 1.
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