Characterizing the roles of transitory obscured phases and inner torus in shaping the fractions of obscured AGN at cosmic noon

[2509.04553] Characterizing the roles of transitory obscured phases and inner torus in shaping the fractions of obscured AGN at cosmic noon Skip to main content We gratefully acknowledge support from the Simons Foundation, member institutions , and all contributors.
It is unclear whether obscured AGN are primarily due to line-of-sight effects, a transitory, dust-enshrouded phase in galaxy evolution, or a combination of both.
Evolution models characterized by AGN LCs with relatively short pre-peak obscured phases followed by more extended optical/UV visible post-peak phases, struggle to reproduce the high fraction of obscured AGN at z~2-3 inferred from X-ray surveys.
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