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Fig. 11


X-ray photon index as a function of λEDD for the X-WISSH quasars with X-ray spectroscopy. Symbol as in Fig. 10. The blue solid line represents the relation found by Shemmer et al. (2008); the blue dashed line represents the relation by Brightman et al. (2013). Errors on Γ are consistently reported at 90% c.l. for all the sources.

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