The faint radio source population at 15.7 GHz-IV. The dominance of core emission in faint radio galaxies
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We present 15-GHz Karl G. Jansky Very Large Array observations of a complete
sample of radio galaxies selected at 15.7 GHz from the Tenth Cambridge (10C)
survey. 67 out of the 95 sources (71 per cent) are unresolved in the new
observations and lower-frequency radio observations, placing an upper limit on
their angular size of ~2 arcsec. Thus compact radio galaxies, or radio galaxies
with very faint jets, are the dominant population in the 10C survey. This
provides support for the suggestion in our previous work that low-luminosity
(
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1365-2966