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dc.contributor.authorRaccanelli, Alvise
dc.contributor.authorZhao, Gong-Bo
dc.contributor.authorBacon, David J.
dc.contributor.authorJarvis, M.J.
dc.contributor.authorPercival, Will J.
dc.contributor.authorNorris, Ray P.
dc.contributor.authorRottgering, Huub
dc.contributor.authorAbdalla, Filipe B.
dc.contributor.authorCress, Catherine M.
dc.contributor.authorKubwimana, Jean-Claude
dc.contributor.authorLindsay, Sam
dc.contributor.authorNichol, Robert C.
dc.contributor.authorSantos, Mario G.
dc.contributor.authorSchwarz, Dominik J.
dc.date.accessioned2012-08-14T16:01:00Z
dc.date.available2012-08-14T16:01:00Z
dc.date.issued2012-08
dc.identifier.citationRaccanelli , 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 & Schwarz , D J 2012 , ' Cosmological measurements with forthcoming radio continuum surveys. ' , Monthly Notices of the Royal Astronomical Society , vol. 424 , no. 2 , pp. 801-819 . https://doi.org/10.1111/j.1365-2966.2012.20634.x
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 976790
dc.identifier.otherPURE UUID: bf0b808b-f6bc-4898-9b3a-07ae9413e46f
dc.identifier.otherWOS: 000306356800001
dc.identifier.otherScopus: 84863879003
dc.identifier.urihttp://hdl.handle.net/2299/8828
dc.description.abstractWe 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, the Australian Square Kilometre Array Pathfinder (ASKAP) and the Westerbork 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 SachsWolfe effect), the cross-correlation 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 SachsWolfe effect. In addition, we show that the use of the integrated SachsWolfe 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 Evolutionary Map 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 the modified gravity parameters {s(?0) = 0.10, s(mu 0) = 0.05}, assuming Planck CMB+SN (current data) priors. Finally, we show that radio surveys would detect a primordial non-Gaussianity of fNL= 8 at 1s, and we briefly discuss other promising probes.en
dc.format.extent19
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.titleCosmological measurements with forthcoming radio continuum surveys.en
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
rioxxterms.versionSMUR
rioxxterms.versionofrecordhttps://doi.org/10.1111/j.1365-2966.2012.20634.x
rioxxterms.typeOther
herts.preservation.rarelyaccessedtrue


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