Revisiting the Unified Model of Active Galactic Nuclei

  title={Revisiting the Unified Model of Active Galactic Nuclei},
  author={Hagai Netzer},
  journal={Annual Review of Astronomy and Astrophysics},
  • H. Netzer
  • Published 4 May 2015
  • Physics
  • Annual Review of Astronomy and Astrophysics
This review describes recent developments related to the unified model of active galactic nuclei (AGNs). It focuses on new ideas about the origin and properties of the central obscurer (torus) and the connection to its surroundings. The review does not address radio unification. AGN tori must be clumpy but uncertainties about their properties persist. Today's most promising models involve disk winds of various types and hydrodynamic simulations that link the large-scale galactic disk to the… 

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