2016/04/06 by S. R. Hinton, Samuel Hinton, Hinton, Samuel · 3 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #Radio Astronomy Observations and Technology #Scientific Research and Discoveries #astro-ph.CO
paper · pdf · doi:10.48550/arxiv.1604.01830
101 pages, 38 figures
arxiv created 2016/04/06 · openalex publication_date 2016/04/06 · arxiv updated 2016/04/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this thesis, I analyse the 2D anisotropic Baryon Acoustic Oscillation (BAO) signal present in the final WiggleZ dataset. I utilise newly released covariance matrices from the WizCOLA simulations and follow well tested methodologies used in prior analyses of the BAO signal in alternative datasets. The WiggleZ data is presented in two forms - in multipole expansion and in data wedges - both of which are analysed in this thesis. I test my model against previous one dimensional analyses of the BAO signal in the WiggleZ data and against WizCOLA simulations, and find it to be free of bias or systematic offsets. However, the analysis on the wedge data format was unable to properly constrain cosmological parameters, and thus discarded in favour of the multipole analysis. The multipole analysis determined Ωc h2, H(z) and DA(z) for three redshift bins, of effective redshifts z = 0.44, 0.60 and 0.73. The respective constraints on Ωc h2 are 0.119+0.029-0.026, 0.151+0.038-0.025 and 0.140+0.036-0.022. The fits for H(z) are respectively 87 ± 16, 90 ± 15 and 82 ± 13 km s-1 Mpc-1, and for DA(z) I find values of 1300 ± 160, 1300 ± 180 and 1350 ± 160 Mpc. These cosmological constraints are consistent with Flat ΛCDM cosmology.