Browsing by Author "Green, D. A."
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Item The faint radio source population at 15.7 GHz – IV. The dominance of core emission in faint radio galaxies(Oxford University Press, 2020) Whittam, I. H.; Green, D. A.; Jarvis, M. J.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.Item A wide-area GMRT 610-MHz survey of ELAIS N1 field(Oxford University Press, 2020) Taylor, A. R.; Ishwara-Chandra, C. H.; Green, D. A.In this paper, we present a wide-area 610-MHz survey of the ELAIS N1 field with the GMRT, covering an area of 12.8 deg2 at a resolution of 6 arcsec and with an rms noise of ∼40 μJy beam−1. This is equivalent to ∼20 μJy beam−1 rms noise at 1.4 GHz for a spectral index of −0.75. The primary goal of the survey was to study the polarized sky at sub-mJy flux densities at < GHz frequencies, alongwith a range of other science goals such as investigations into the nature of the low-frequency μJy source populations and alignments of radio jets. A total of 6400 sources were found in this region, the vast majority of them compact.