Measuring baryon acoustic oscillations with future SKA surveys
Abstract
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.
Additional Information
© 2015 owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-ShareAlike. Published on: 2015 May 29.Attached Files
Published - AASKA14_024.pdf
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Additional details
- Eprint ID
- 88975
- Resolver ID
- CaltechAUTHORS:20180821-092326816
- Created
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2018-08-21Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field
- Series Name
- Proceedings of Science