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Fig. 4


Accretion disk luminosity [Eddington units] vs. mass of the central black hole [ M]. The orange stars are the RLNLS1s of the present sample (see Table 2) and filled orange stars indicate those detected at γ rays; the red circles are the FSRQs, and the blue squares are the BL Lac objects (blue arrows indicates upper limits in the accretion luminosity) from Ghisellini et al. (2010). We noted some BL Lacs with strong accretion disk, in the region occupied by FSRQs: these are the so-called intruders (Ghisellini et al. 2011; Giommi et al. 2012).

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