Fig. 5
Distributions of variability Doppler factors δvar,eq at selected frequencies: 2.64, 4.85, 14.6, 32, and 86 GHz from top to bottom. All sources (grey) are shown with FSRQs (black) and BL Lacs (green) superimposed. We note the systematic decrease of δvar,eq towards higher frequencies as well as the difference in the sample between FSRQs and BL Lacs (see text).
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