Baryon Acoustic Oscillations and Dynamical Dark Energy

Details Baryon Acoustic Oscillations and Dynamical Dark Energy Baryon Acoustic Oscillations and Dynamical Dark Energy

2006-09-04

arxiv.org/abs/astro-ph/0609075v2

JCAP 0704:015,2007

Astronomy and Astrophysics

Astrophysics

4 pages, added sections and references, matches published version

Scientific paper

10.1088/1475-7516/2007/04/015

We compute the impact of dark energy at last scattering on measurements of baryon acoustic oscillations (BAOs). We show that an early dark energy component can contribute a systematic uncertainty to BAO measurements of up to 2.5%. Whilst this effect turns out to only slightly affect current BAO surveys, the results of future BAO surveys might become biased. We find that BAO surveys alone appear unable to resolve this systematic uncertainty, so supplementary measurements are necessary.

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