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Fig. 5.
PSD slope vs. observing frequency for samples of BL Lacs and a few individual targets. Filled red symbols: samples in Table 6; open purple square: FSRQ 3C 279 (this work); open purple circles: 3C 279 (Chatterjee et al. 2008); filled purple square: PKS 2155−304 (H.E.S.S. Collaboration 2017).
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