Quote:
Originally Posted by dgruss23
...You also should look at a paper published in ApJ Letter last year by Morley Bell which contrasts the quasars - which don't seem to show much of a magnitude redshift relation, with radio galaxies - which do show a fairly tight magnitude redshift relation. ...
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http://arxiv.org/abs/0704.1631v1
http://www.journals.uchicago.edu/doi/abs/10.1086/522337
I assume that the above paper is the one that you refer to.