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

Parkinson, David and Forster, Karl and Martin, D. Christopher and Wyder, Ted K. (2012) The WiggleZ Dark Energy Survey: Final data release and cosmological results. Physical Review D, 86 (10). Art. No. 103518. ISSN 0556-2821. http://resolver.caltech.edu/CaltechAUTHORS:20130111-161415492

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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, {Ω_(b)h^2,Ω_(CDM)h^2,H_0,τ,A_s,n_s}, and five supplementary parameters {n_(run),r,w,Ω_k,∑m_ν}. In combination with the cosmic microwave background, our results are consistent with the ΛCDM concordance cosmology, with a measurement of the matter density of Ωm=0.29±0.016 and amplitude of fluctuations σ_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 ΛCDM 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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevD.86.103518DOIUNSPECIFIED
http://link.aps.org/doi/10.1103/PhysRevD.86.103518PublisherUNSPECIFIED
Additional Information:© 2012 American Physical Society. Received 31 August 2012; published 16 November 2012. D. P. thanks Antony Lewis, Andrew Liddle and Beth Reid for helpful discussions. We acknowledge financial support from the Australian Research Council through Discovery Project Grants No. DP0772084 and No. DP1093738, funding the positions of S. B., D. P., M. P., G. P. and T.M. D., and Linkage International travel Grant No. LX0881951. D.C. and S.C. acknowledge the support of an Australian Research Council through QEII Fellowships. M. J.D. and T. M.D. thank the Gregg Thompson Dark Energy Travel Fund for financial support. GALEX (the Galaxy Evolution Explorer) is a NASA Small Explorer, launched in 2003 April. We gratefully acknowledge NASAs support for construction, operation and science analysis for the GALEX mission, developed in cooperation with the Centre National dEtudes Spatiales of France and the Korean Ministry of Science and Technology. Finally, we thank the Anglo-Australian Telescope Allocation Committee for supporting the WiggleZ survey over nine semesters, and we are very grateful for the dedicated work of the staff of the Australian Astronomical Observatory in the development and support of the AAOmega spectrograph, and the running of the AAT.
Group:Space Radiation Laboratory, Space Astrophysics Laboratory
Funders:
Funding AgencyGrant Number
Australian Research CouncilDP0772084
Australian Research CouncilDP1093738
Linkage International travel GrantLX0881951
Australian Research Council QEII FellowshipUNSPECIFIED
Gregg Thompson Dark Energy Travel FundUNSPECIFIED
Classification Code:PACS: 98.80.-k
Record Number:CaltechAUTHORS:20130111-161415492
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20130111-161415492
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:36337
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:14 Jan 2013 18:22
Last Modified:28 Aug 2016 20:19

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