Summary

• Fraction of obscured AGN: 75%­±8%
• Fraction of CT AGN: 37%±7%
• Fundamental physics(?)
• Torus creation process may be luminosity-dependent
• cloud production, (Elitzur & Shlosman 2006)
• Scale (BHM) of the system evolves, anti-hierarchical growth
• Changes critical luminosity where torus “reacts”
• Luminosity-dependence evolution
• Take-away: Select obscured AGN – intrinsically fainter
• Select at different redshifts – different systems