Fig. 9.
Distribution of the spectral parameters. Top left: 4–120 keV flux (ph/cm2/s). Top right: photon index α. Bottom left: photon index β (for the sources with a broken power-law spectrum). Bottom right: break energy in keV: Ebreak (for the sources with a broken power-law spectrum). Black histograms represent the full catalogue, whereas red histograms represent the brightest 53 sources.
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