A tentative elementary model of quasars
  A very simple model of quasar and Seyfert galaxy is obtained using the "Coherent Raman Effect on time-Incoherent Light" (CREIL) to explain a part of the observed redshifts. As its redshift is mostly provided by the CREIL, a QSO is not very far, its kernel may be a neutron star fed by the accretion of a disk, fed itself by the fall of many satellites. Disk and satellites are slowed by a relatively dense halo. The electric charges resulting of the friction of the disk produce flat lightnings, thus radio noise emitted mostly perpendicular to the disk, and X rays. The optical spectrum, including the shape of the spectral lines is explained without uncommon physics such as dark matter, by a splitting of the very wide lines resulting from simultaneous absorption and frequency shift, splitting due to a modulation of the redshift resulting from variations of a magnetic field. 
Jacques Moret-Bailly