Fig. 6.
PSD slope distribution for different data sets. The green histogram represents the ξ distribution for the test OU light curves (parameters are drawn from Gaussian distributions) used to test of the extraction method. The red histogram represents the ξ distribution of the observed Fermi-LAT data. The blue ξ distribution represents the OU LCs where the OU parameters are calibrated with the observed data. The bins are determined with the Bayesian block algorithm (Scargle et al. 2013).
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