Where do Seyfert galaxies fit into the unified and accretion disk models for AGN?
A) Seyferts are young active galaxies that have not yet become quasars.
B) Seyferts are former quasars that have become less active as a result of depletion of the source material needed to sustain the accretion disk around the central black hole.
C) Seyferts are what we observe when looking at an active galaxy without jets.
D) When an active galaxy has its accretion disk oriented so that the jets lie in the plane of the galaxy rather than perpendicular to it, the beams of synchrotron radiation can generate spiral arms, and the galaxy becomes a Seyfert.
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