dc.contributor.author Prescott, Matthew dc.contributor.author Mauch, T. dc.contributor.author Jarvis, M.J. dc.contributor.author McAlpine, K. dc.contributor.author Smith, Daniel dc.contributor.author Fine, S. dc.contributor.author Johnston, R. dc.contributor.author Hardcastle, M.J. dc.contributor.author Baldry, I. K. dc.contributor.author Brough, S. dc.contributor.author Brown, M. J. I. dc.contributor.author Bremer, M.N. dc.contributor.author Driver, S. P. dc.contributor.author Hopkins, A. M. dc.contributor.author Kelvin, L. S. dc.contributor.author Loveday, J. dc.contributor.author Norberg, P. dc.contributor.author Obreschkow, D. dc.contributor.author Sadler, E.M. dc.date.accessioned 2016-03-21T09:35:53Z dc.date.available 2016-03-21T09:35:53Z dc.date.issued 2016-03-21 dc.identifier.citation Prescott , M , Mauch , T , Jarvis , M J , McAlpine , K , Smith , D , Fine , S , Johnston , R , Hardcastle , M J , Baldry , I K , Brough , S , Brown , M J I , Bremer , M N , Driver , S P , Hopkins , A M , Kelvin , L S , Loveday , J , Norberg , P , Obreschkow , D & Sadler , E M 2016 , ' Galaxy And Mass Assembly (GAMA) : The 325-MHz Radio Luminosity Function of AGN and Star Forming Galaxies ' , Monthly Notices of the Royal Astronomical Society , vol. 457 , no. 1 , pp. 730-744 . https://doi.org/10.1093/mnras/stv3020 dc.identifier.issn 0035-8711 dc.identifier.other PURE: 9755346 dc.identifier.other PURE UUID: 6527dc68-1ede-4674-a245-db8f31843150 dc.identifier.other ArXiv: http://arxiv.org/abs/1601.00003v1 dc.identifier.other Scopus: 84961590559 dc.identifier.other ORCID: /0000-0001-9708-253X/work/69424395 dc.identifier.uri http://hdl.handle.net/2299/16843 dc.description.abstract Measurement of the evolution of both active galactic nuclei (AGN) and star-formation in galaxies underpins our understanding of galaxy evolution over cosmic time. Radio continuum observations can provide key information on these two processes, in particular via the mechanical feedback produced by radio jets in AGN, and via an unbiased dust-independent measurement of star-formation rates. In this paper we determine radio luminosity functions at 325 MHz for a sample of AGN and star-forming galaxies by matching a 138 deg sq. radio survey conducted with the Giant Metrewave Radio Telescope (GMRT), with optical imaging and redshifts from the Galaxy And Mass Assembly (GAMA) survey. We find that the radio luminosity function at 325 MHz for star-forming galaxies closely follows that measured at 1.4 GHz. By fitting the AGN radio luminosity function out to $z = 0.5$ as a double power law, and parametrizing the evolution as ${\Phi} \propto (1 + z)^{k}$ , we find evolution parameters of $k = 0.92 \pm 0.95$ assuming pure density evolution and $k = 2.13 \pm 1.96$ assuming pure luminosity evolution. We find that the Low Excitation Radio Galaxies are the dominant population in space density at lower luminosities. Comparing our 325 MHz observations with radio continuum imaging at 1.4 GHz, we determine separate radio luminosity functions for steep and flat-spectrum AGN, and show that the beamed population of flat-spectrum sources in our sample can be shifted in number density and luminosity to coincide with the unbeamed population of steep-spectrum sources, as is expected in the orientation based unification of AGN. en dc.language.iso eng dc.relation.ispartof Monthly Notices of the Royal Astronomical Society dc.subject astro-ph.GA dc.title Galaxy And Mass Assembly (GAMA) : The 325-MHz Radio Luminosity Function of AGN and Star Forming Galaxies en dc.contributor.institution School of Physics, Astronomy and Mathematics dc.contributor.institution Centre for Astrophysics Research dc.description.status Peer reviewed rioxxterms.version AM rioxxterms.versionofrecord https://doi.org/10.1093/mnras/stv3020 rioxxterms.type Journal Article/Review herts.preservation.rarelyaccessed true
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