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Measuring baryon acoustic oscillations with future SKA surveys

Bull, Philip and Camera, Stefano and Raccanelli, Alvise and Blake, Chris and Ferreira, Pedro G. and Santos, Mario G. and Schwarz, Dominik J. (2015) Measuring baryon acoustic oscillations with future SKA surveys. In: Advancing Astrophysics with the Square Kilometre Array. Proceedings of Science. Vol.215. SISSA , Trieste, Italy, Art. No. 024. ISBN 9781909204706.

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The imprint of baryon acoustic oscillations (BAO) in large-scale structure can be used as a standard ruler for mapping out the cosmic expansion history, and hence for testing cosmological models. In this chapter we briefly describe the scientific background to the BAO technique, and forecast the potential of the Phase 1 and 2 SKA telescopes to perform BAO surveys using both galaxy catalogues and intensity mapping, assessing their competitiveness with current and future optical galaxy surveys. We find that a 25,000 deg^2 intensity mapping survey on a Phase 1 array will preferentially constrain the radial BAO, providing a highly competitive 2% constraint on the expansion rate at z ≃ 2. A 30,000 deg2^ galaxy redshift survey on SKA2 will outperform all other planned experiments for z ≾ 1.4.

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Santos, Mario G.0000-0003-3892-3073
Additional Information:© 2015 owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-ShareAlike. Published on: 2015 May 29.
Series Name:Proceedings of Science
Record Number:CaltechAUTHORS:20180821-092326816
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:88975
Deposited By: Tony Diaz
Deposited On:21 Aug 2018 18:34
Last Modified:09 Mar 2020 13:19

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