Fig. 14


Distribution of the HGPS source power-law (PL) spectral indices. For consistency, the PL model spectral index is used for all sources, even those for which an exponential cutoff power law (ECPL) fits better. Taking statistical and systematic uncertainties into account, all indices are compatible within 2σ with the mean Γ = 2.4 ± 0.3 of the distribution.

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