Fig. 2
Variation of the fraction of obscured sources (fobs) and of the half-opening angle of the torus (θOA) with the 2–10 keV luminosity for three of the most recent medium X-ray (2–10 keV, Hasinger 2008), hard X-ray (15–55 keV, Burlon et al. 2011), and IR (Maiolino et al. 2007) studies (Eqs. (1)–(3)).
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