Fig. 4
Tail of the distribution of the mean Fermi γ-ray fluxes (>300 MeV) for the 1144 sources classified as blazars in Fermi-LAT 3FGL catalogue (Acero et al. 2015). The positions of the the seven quasi-periodic sources proposed by Prokhorov & Moraghan (2017) are indicated by dotted lines, distinguishing BL Lacs (red) and flat spectrum radio quasars (blue).
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