Abstract
We show observational evidence that double bars are present in Seyfert galaxies, and describe how they fit in with the idea that self-gravitating gas flows in a bar potential play a key role in fueling activity. In addition our results show that in each case the inner bar is closely aligned with the axis of the radiation cones emerging from the nucleus. We propose that the collimating torus of molecular gas responsible for the anisotropy of the radiation field is created at an Inner Inner Lindblad Resonance, and is fed by gas streaming in along the inner nuclear bar, and is thus regulated by the overall dynamical behaviour of the parent galaxy.
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Axon, D.J., Robinson, A. (1996). Bar triggered nuclear activity and the anisotropic radiation fields of Active Galactic Nuclei. In: Sandqvist, A., Lindblad, P.O. (eds) Barred Galaxies and Circumnuclear Activity. Lecture Notes in Physics, vol 474. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0101981
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DOI: https://doi.org/10.1007/BFb0101981
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