The WiggleZ Dark Energy Survey: final data release and cosmological results

David Robert Parkinson, S Riemer-Sorensen, Chris Blake, Gregory B Poole, Tamara Maree Davis, Sarah Brough, Matthew Colless, Carlos Contreras, Warrick John Couch, Scott Martin Croom, Darreb Croton, Michael John Drinkwater, Karl Forster, David G Gilbank, Michael Gladders, Karl Glazebrook, Ben Jelliffe, Russell J Jurek, I-hui Li, Barry MadoreDamien C Martin, Kevin Alan Pimbblet, Michael Pracy, Rob Sharp, Emily Wisnioski, David Woods, Ted Wyder, Howard K C Yee

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    Abstract

    This paper presents cosmological results from the final data release of the WiggleZ Dark Energy Survey. We perform full analyses of different cosmological models using the WiggleZ power spectra measured at z = 0.22, 0.41, 0.60, and 0.78, combined with other cosmological data sets. The limiting factor in this analysis is the theoretical modeling of the galaxy power spectrum, including nonlinearities, galaxy bias, and redshift-space distortions. In this paper we assess several different methods for modeling the theoretical power spectrum, testing them against the Gigaparsec WiggleZ simulations (GiggleZ). We fit for a base set of six cosmological parameters, Omega(b)h(2), Omega(CDM)h(2); H-0, tau, A(s), n(s) , and five supplementary parameters n(run), r, w, Omega(k), Sigma m(v) . In combination with the cosmic microwave background, our results are consistent with the Lambda CDM concordance cosmology, with a measurement of the matter density of Omega(m) = 0.29 +/- 0.016 and amplitude of fluctuations sigma(8) = 0.825 +/- 0.017. Using WiggleZ data with cosmic microwave background and other distance and matter power spectra data, we find no evidence for any of the extension parameters being inconsistent with their Lambda CDM model values. The power spectra data and theoretical modeling tools are available for use as a module for CosmoMC, which we here make publicly available at http://smp.uq.edu.au/wigglez-data. We also release the data and random catalogs used to construct the baryon acoustic oscillation correlation function.
    Original languageEnglish
    Pages (from-to)1 - 22
    Number of pages22
    JournalPhysical Review D
    Volume86
    Issue number10
    DOIs
    Publication statusPublished - 2012

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