title: Measuring the 2D baryon acoustic oscillation signal of galaxies in WiggleZ: cosmological constraints.
abstract: We present results from the 2D anisotropic baryon acoustic oscillation (BAO) signal present in the final data set from the WiggleZ Dark Energy Survey. We analyse the WiggleZ data in two ways: first using the full shape of the 2D correlation function and secondly focusing only on the position of the BAO peak in the reconstructed data set. When fitting for the full shape of the 2D correlation function we use a multipole expansion to compare with theory. When we use the reconstructed data we marginalize over the shape and just measure the position of the BAO peak, analysing the data in wedges separating the signal along the line of sight from that parallel to the line of sight. We verify our method with mock data and find the results to be free of bias or systematic offsets. We also redo the pre-reconstruction angle-averaged (1D) WiggleZ BAO analysis with an improved covariance and present an updated result. The final results are presented in the form of Ωch2,H(z), andDA(z) for three redshift bins with effective redshiftsz= 0.44, 0.60, and 0.73. Within these bins and methodologies, we recover constraints between 5 and 22 per cent error. Our cosmological constraints are consistent with flat ΛCDM cosmology and agree with results from the Baryon Oscillation Spectroscopic Survey.
authors.affiliation: School of Mathematics and Physics, The University of Queensland, Brisbane, QLD 4072, Australia; ARC Centre of Excellence for All-sky Astrophysics (CAASTRO).
authors.forename: Samuel R
authors.initials: SR
authors.lastname: Hinton
authors.affiliation: ARC Centre of Excellence for All-sky Astrophysics (CAASTRO); Centre for Astrophysics and Supercomputing, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, Australia.
authors.forename: Eyal
authors.initials: E
authors.lastname: Kazin
authors.affiliation: School of Mathematics and Physics, The University of Queensland, Brisbane, QLD 4072, Australia; ARC Centre of Excellence for All-sky Astrophysics (CAASTRO).
authors.forename: Tamara M
authors.initials: TM
authors.lastname: Davis
authors.affiliation: ARC Centre of Excellence for All-sky Astrophysics (CAASTRO); Centre for Astrophysics and Supercomputing, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, Australia.
authors.forename: Chris
authors.initials: C
authors.lastname: Blake
authors.affiliation: Australian Astronomical Observatory, PO Box 915, North Ryde, NSW 1670, Australia.
authors.forename: Sarah
authors.initials: S
authors.lastname: Brough
authors.affiliation: Research School of Astronomy and Astrophysics, The Australian National University, Canberra, ACT 2611, Australia.
authors.forename: Matthew
authors.initials: M
authors.lastname: Colless
authors.affiliation: Australian Astronomical Observatory, PO Box 915, North Ryde, NSW 1670, Australia.
authors.forename: Warrick J
authors.initials: WJ
authors.lastname: Couch
authors.affiliation: School of Mathematics and Physics, The University of Queensland, Brisbane, QLD 4072, Australia.
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Drinkwater
authors.affiliation: Centre for Astrophysics and Supercomputing, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, Australia.
authors.forename: Karl
authors.initials: K
authors.lastname: Glazebrook
authors.affiliation: Australia Telescope National Facility, CSIRO, Epping, NSW 1710, Australia.
authors.forename: Russell J
authors.initials: RJ
authors.lastname: Jurek
authors.affiliation: School of Mathematics and Physics, The University of Queensland, Brisbane, QLD 4072, Australia; ARC Centre of Excellence for All-sky Astrophysics (CAASTRO).
authors.forename: David
authors.initials: D
authors.lastname: Parkinson
authors.affiliation: E.A.Milne Centre for Astrophysics, University of Hull, Cottingham Road, Hull HU6 7RX, UK; School of Physics, Monash University, Clayton, VIC 3800, Australia; Monash Centre for Astrophysics (MoCA), Monash University, Clayton, VIC 3800, Australia.
authors.forename: Kevin A
authors.initials: KA
authors.lastname: Pimbblet
authors.affiliation: School of Physics, University of Melbourne, Parksville, VIC 3010, Australia.
authors.forename: Gregory B
authors.initials: GB
authors.lastname: Poole
authors.affiliation: Sydney Institute for Astronomy, School of Physics, University of Sydney, NSW 2006, Australia.
authors.forename: Michael
authors.initials: M
authors.lastname: Pracy
authors.affiliation: Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, Canada.
authors.forename: David
authors.initials: D
authors.lastname: Woods
keywords: cosmological parameters; dark energy; large-scale structure of Universe