@article { , title = {The WiggleZ Dark Energy Survey: improved distance measurements to z = 1 with reconstruction of the baryonic acoustic feature}, abstract = {We present significant improvements in cosmic distance measurements from the WiggleZ Dark Energy Survey, achieved by applying the reconstruction of the baryonic acoustic feature technique. We show using both data and simulations that the reconstruction technique can often be effective despite patchiness of the survey, significant edge effects and shot-noise. We investigate three redshift bins in the redshift range 0.2 < z < 1, and in all three find improvement after reconstruction in the detection of the baryonic acoustic feature and its usage as a standard ruler. We measure model-independent distance measures DV(rsfid/rs) of 1716 ± 83, 2221 ± 101, 2516 ± 86 Mpc (68 per cent CL) at effective redshifts z = 0.44, 0.6, 0.73, respectively, where DV is the volume-averaged distance, and rs is the sound horizon at the end of the baryon drag epoch. These significantly improved 4.8, 4.5 and 3.4 per cent accuracy measurements are equivalent to those expected from surveys with up to 2.5 times the volume of WiggleZ without reconstruction applied. These measurements are fully consistent with cosmologies allowed by the analyses of the Planck Collaboration and the Sloan Digital Sky Survey. We provide the DV(rsfid/rs) posterior probability distributions and their covariances. When combining these measurements with temperature fluctuations measurements of Planck, the polarization of Wilkinson Microwave Anisotropy Probe 9, and the 6dF Galaxy Survey baryonic acoustic feature, we do not detect deviations from a flat Λ cold dark matter (ΛCDM) model. Assuming this model, we constrain the current expansion rate to H₀ = 67.15 ± 0.98 km s⁻¹Mpc⁻¹. Allowing the equation of state of dark energy to vary, we obtain wDE = −1.080 ± 0.135. When assuming a curved ΛCDM model we obtain a curvature value of ΩK = −0.0043 ± 0.0047.}, doi = {10.1093/mnras/stu778}, eissn = {1365-2966}, issn = {0035-8711}, issue = {4}, journal = {Monthly notices of the Royal Astronomical Society}, pages = {3524-3542}, publicationstatus = {Published}, publisher = {Oxford University Press}, url = {https://hull-repository.worktribe.com/output/375251}, volume = {441}, keyword = {Lasers and Light Matter Interactions, Specialist Research - Other, Cosmological parameters, Distance scale, Large-scale structure of the universe}, year = {2014}, author = {Kazin, Eyal A. and Koda, Jun and Blake, Chris and Padmanabhan, Nikhil and Brough, Sarah and Colless, Matthew and Contreras, Carlos and Couch, Warrick and Croom, Scott and Croton, Darren J. and Davis, Tamara M. and Drinkwater, Michael J. and Forster, Karl and Gilbank, David and Gladders, Mike and Glazebrook, Karl and Jelliffe, Ben and Jurek, Russell J. and Li, I-hui and Madore, Barry and Martin, D. Christopher and Pimbblet, Kevin and Poole, Gregory B. and Pracy, Michael and Sharp, Rob and Wisnioski, Emily and Woods, David and Wyder, Ted K. and Yee, H. K. C.} }