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Hi Orestis,
I am interested to see what unfolds from your question!
All I vaguely know of this issue comes from reading the book "Arp Atlas of Peculiar Galaxies". My understanding is that Halton Arp reported a high correlation between the location of quasars and the galaxies that he classified as peculiar. How could this be as the red shift of the quasars puts them at great distance beyond the galaxies? His argument is that the red shift of quasars is not due only to the expansion of the universe, but also to some intrinsic property of the quasar. Basically that the peculiar galaxies created the quasars and ejected them as a result. His idea of intrinsic red shift is not widely regarded as compatible with mainstream physics.
I suspect that you will get replies by people far more educated, eloquent and committed in this regard than me.
I think the argument against Arp is in part based on doubt about the statistics of his claimed correlation between peculiar galaxies and quasars.
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