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arXiv · astro-ph/0607122

Dark energy and curvature from a future baryonic acoustic oscillation survey using the Lyman-alpha forest

Patrick McDonald·Daniel Eisenstein
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Abstract

We explore the requirements for a Lyman-alpha forest (LyaF) survey designed to measure the angular diameter distance and Hubble parameter at 2~ 250 spectrograph is sufficient to measure both the radial and transverse oscillation scales to 1.4% from the LyaF (or better, if fainter magnitudes and possibly Lyman-break galaxies can be used). At fixed integration time and in the sky-noise-dominated limit, a wider, noisier survey is generally more efficient; the only fundamental upper limit on noise being the need to identify a quasar and find a redshift. Because the LyaF is much closer to linear and generally better understood than galaxies, systematic errors are even less likely to be a problem.

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Patrick McDonald, Daniel Eisenstein. 2006-07-07. Dark energy and curvature from a future baryonic acoustic oscillation survey using the Lyman-alpha forest. https://doi.org/10.1103/physrevd.76.063009

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