Cosmological Surveys with the Australian Square Kilometre Array Pathfinder
A. R. Duffy A C , A. Moss B and L. Staveley-Smith A
+ Author Affiliations
- Author Affiliations
A ICRAR, The University of Western Australia, M468, 35 Stirling Hwy, WA 6009, Australia
B Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC, V6T 1Z1, Canada
C Corresponding author. Email: alan.duffy@icrar.org
Publications of the Astronomical Society of Australia 29(2) 202-211 https://doi.org/10.1071/AS11013
Submitted: 21 March 2011 Accepted: 21 March 2012 Published: 3 May 2012
Journal Compilation © Astronomical Society of Australia 2012
Abstract
This is a design study into the capabilities of the Australian Square Kilometre Array Pathfinder in performing a full-sky low redshift neutral hydrogen survey, termed WALLABY, and the potential cosmological constraints one can attain from measurement of the galaxy power spectrum. We find that the full sky survey will likely attain 6 × 105 redshifts which, when combined with expected Planck CMB data, will constrain the Dark Energy equation of state to 20%, representing a coming of age for radio observations in creating cosmological constraints.
Keywords: (cosmology): cosmological parameters — galaxies: statistics — methods: numerical — radio lines: galaxies — telescopes
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