Urry and Padovani 1995 proposed a unified model for Active Galactic Nuclei, which has since been recognised as a good model for AGN. If AGN are randomly oriented, then I'd expect there to be more obscured AGN than unobscured, because there would be more orientations that would make us look through the sides, than along the axis:

enter image description here

Is this the case? In other words, how many obscured-type AGNs (Seyfert 1 or 2 Galaxies, radio galaxies, radio-quiet quasars, NLRs) are there, compared to unobscured AGN (BLRs, blazars, radio-loud quasars)?

  • $\begingroup$ Nice picture. Does the radio-loud/radio-quite line reflect a real asymmetry, or is just conflating diagrams of two different types of AGN $\endgroup$ Jul 1, 2019 at 20:45
  • $\begingroup$ I think it's just conflating two diagrams, as a concise way of explaining theRL/RQ dichotomoy. $\endgroup$
    – Jim421616
    Jul 1, 2019 at 21:28


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