The nature of the unidentified high latitude radio sources

Details The nature of the unidentified high latitude radio sources The nature of the unidentified high latitude radio sources

Mar 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978phys...17..361l&link_type=abstract

(Niels Bohr Institut, Teknisk Videnskabelige Forskningsrad, and Nordisk Institut for Teoretisk Atomfysik, Symposium on Quasars a

Astronomy and Astrophysics

Astronomy

1

Astronomical Models, Cosmology, Radio Astronomy, Radio Sources (Astronomy), Flux Density, Northern Hemisphere, Quasars, Radio Galaxies, Red Shift

Scientific paper

A new optical survey of the fields of 3CR radio sources indicates that about 90-95 percent of the high latitude 3CR sources can be identified with radio galaxies and quasars with apparent magnitudes less than about 23. At the faintest magnitudes, m greater than 20 and less than 23, all the new identifications are galaxies. These results suggest that the unidentified high latitude radio sources are radio galaxies and that like quasars they exhibit strong cosmological evolution. The new identifications are candidates for use in classical cosmological tests such as the m-z relation and for studies of the astrophysics of galaxies and radio sources at epochs significantly earlier than the present. The cosmological significance of these studies and of their extension to lower flux densities is described.

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