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Show simple item record Raccanelli, A Zhao, G-B Bacon, DJ Jarvis, MJ Percival, WJ Norris, RP Rottgering, H Abdalla, FB Cress, CM Kubwimana, J-C Lindsay, S Nichol, RC Santos, MG Schwarz, DJ 2013-04-19T09:50:56Z 2013-04-19T09:50:56Z 2012-08
dc.identifier.citation Raccanelli, A, Zhao, G-B, Bacon, D.J, Jarvis, M.J, Percival, W.J, Norris, R.P, Rottgering, H, Abdalla, F.B, Cress, C.M, Kubwimana, J-C, Lindsay, S, Nichol, R.C, Santos, M.G and Schwarz, D.J. 2012. Cosmological measurements with forthcoming radio continuum surveys. Monthly Notices of the Royal Astronomical Society, vol. 424(2), pp 801-819 en_US
dc.identifier.issn 0035-8711
dc.description Copyright: 2012 Royal Astronomical Society. Published in Monthly Notices of the Royal Astronomical Society, vol. 424(2), pp 801-819 en_US
dc.description.abstract We present forecasts for constraints on cosmological models that can be obtained using the forthcoming radio continuum surveys: the wide surveys with the Low Frequency Array (LOFAR) for radio astronomy, theAustralian SquareKilometreArray Pathfinder (ASKAP) and theWesterbork Observations of the Deep Apertif Northern Sky (WODAN).We use simulated catalogues that are appropriate to the planned surveys in order to predict measurements obtained with the source autocorrelation, the cross-correlation between radio sources and cosmic microwave background (CMB) maps (the integrated Sachs–Wolfe effect), the crosscorrelation of radio sources with foreground objects resulting from cosmic magnification, and a joint analysis together with the CMB power spectrum and supernovae (SNe). We show that near-future radio surveys will bring complementary measurements to other experiments, probing different cosmological volumes and having different systematics. Our results show that the unprecedented sky coverage of these surveys combined should provide the most significant measurement yet of the integrated Sachs–Wolfe effect. In addition, we show that the use of the integrated Sachs–Wolfe effect will significantly tighten the constraints on modified gravity parameters, while the best measurements of dark energy models will come from galaxy autocorrelation function analyses. Using a combination of the EvolutionaryMap of the Universe (EMU) and WODAN to provide a full-sky survey, it will be possible to measure the dark energy parameters with an uncertainty of {s(w0)=0.05, s(wa)=0.12} and themodified gravity parameters {s( 0) = 0.10, s(µ0) = 0.05}, assuming Planck CMB+SN (current data) priors. Finally, we show that radio surveys would detect a primordial non-Gaussianity of f NL =8 at 1s, and we briefly discuss other promising probes. en_US
dc.language.iso en en_US
dc.publisher Royal Astronomical Society en_US
dc.relation.ispartofseries Workflow;10443
dc.subject Cosmological parameters en_US
dc.subject Cosmology en_US
dc.subject Radio continuum en_US
dc.subject Cosmological models en_US
dc.subject Galaxies en_US
dc.subject Cosmological measurements en_US
dc.subject Cosmic microwave background en_US
dc.subject CMB en_US
dc.subject Low frequency array en_US
dc.subject LOFAR en_US
dc.title Cosmological measurements with forthcoming radio continuum surveys en_US
dc.type Article en_US

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