1202.1776 (Moshe Elitzur)
Moshe Elitzur
The inevitable spread in properties of the toroidal obscuration of active
galactic nuclei (AGNs) invalidates the widespread notion that type 1 and 2 AGNs
are intrinsically the same objects. Instead, AGNs are drawn
\emph{preferentially} from the distribution of torus covering factors; type 2
are more likely drawn from the distribution higher end, type 1 from its lower
end. Type 2 AGNs have a higher IR luminosity, lower narrow-line luminosity and
a higher fraction of Compton thick X-ray obscuration than type 1. Meaningful
studies of unification statistics cannot be conducted without first determining
the intrinsic distribution function of torus covering factors.
View original:
http://arxiv.org/abs/1202.1776
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