Relations Between the Optical and Radio Properties of Extragalactic Radio Sources

E. M. Burbidge
1977 Symposium - International astronomical union  
Correlations between the radio and optical properties of radio sources have proved elusive and the main conclusion to be drawn from this is that there is a great variety of objects in the universe that emit nonthermal radiation, so that attempts to use these objects for cosmological purposes can be frustrated unless one can find some way of selecting objects that do have common intrinsic properties. Despite this, the search for relations and correlations is interesting quite apart from
more » ... , because such correlations should provide a groundwork for a physical theory or theories of what is really happening in sources of nonthermal radiation.
doi:10.1017/s007418090001620x fatcat:6ykji6z2bjdxbildg47t2tdtm4