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AGNs, and why there is a torus

  1. Jan 8, 2007 #1
    In one of my lectures that I had a few weeks ago, the lecturer was talking about Active galactic nuclei, he spoke of a model in which there was a BH at the centre of a galaxy, and that around the BH, there is a torus of gas and dust, and so it explains the seyfarts 1 & 2 which are simply 2 different ways of looking at the same thing, but why is it that the dust forms a torus around the BH, why does it not form a sphere? I suppose the question is similar to asking why all the planets in the solar system for orbits within the same approximate plane (which would also be interesting 2 know).
    Thank you
  2. jcsd
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