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dc.contributor.authorOcran, E.F
dc.contributor.authorTaylor, A.R
dc.contributor.authorVaccari, M
dc.date.accessioned2021-06-03T09:25:09Z
dc.date.available2021-06-03T09:25:09Z
dc.date.issued2021
dc.identifier.citationOcran, E.F. et al. (2021). The evolution of the low-frequency radio AGN population to z 1.5 in the ELAIS N1 field. Monthly Notices of the Royal Astronomical Society, 500(4), 4685-4702en_US
dc.identifier.issn00358711
dc.identifier.uri10.1093/mnras/staa3538
dc.identifier.urihttp://hdl.handle.net/10566/6248
dc.description.abstractWe study the cosmic evolution of radio sources out to z 1.5 using a GMRT 610 MHz survey covering ∼1.86 deg2 of the ELAIS N1 field with a minimum/median rms noise 7.1/19.5 μJy beam-1 and an angular resolution of 6 arcsec. We classify sources as star forming galaxies (SFGs), radio-quiet (RQ) and radio-loud (RL) Active Galactic Nuclei (AGNs) using a combination of multiwavelength diagnostics and find evidence in support of the radio emission in SFGs and RQ AGN arising from star formation, rather than AGN-related processes. At high luminosities, however, both SFGs and RQ AGN display a radio excess when comparing radio and infrared star formation rates. The vast majority of our sample lie along the SFR M 'main sequence' at all redshifts when using infrared star formation rates. We derive the 610 MHz radio luminosity function for the total AGN population, constraining its evolution via continuous models of pure density and pure luminosity evolution with Φ ∗(1+ z)(2.25± 0.38)-(0.63± 0.35)z and &mathit L610\, MHz &propto, (1+ z)(3.45± 0.53)-(0.55± 0.29) z, respectively. For our RQ and RL AGN, we find a fairly mild evolution with redshift best fitted by pure luminosity evolution with L 610\, MHz (1+ z)(2.81± 0.43)-(0.57± 0.30) z for RQ AGN and &mathit L610\, MHz(, 1+ z)(3.58± 0.54)-(0.56± 0.29) z for RL AGN.en_US
dc.language.isoenen_US
dc.publisherOxford University Pressen_US
dc.subjectGalaxies: activeen_US
dc.subjectGalaxies: luminosity functionen_US
dc.subjectLarge-scale structure of universeen_US
dc.subjectRadio continuum: Galaxiesen_US
dc.subjectAGN populationen_US
dc.titleThe evolution of the low-frequency radio AGN population to z 1.5 in the ELAIS N1 fielden_US
dc.typeArticleen_US


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