Constraints on dark energy models from radial baryon acoustic scale measurements

Details Constraints on dark energy models from radial baryon acoustic scale measurements Constraints on dark energy models from radial baryon acoustic scale measurements

2008-10-12

arxiv.org/abs/0810.2104v3

Astrophys.J.701:1373-1380,2009

Astronomy and Astrophysics

Astrophysics

24 pages, 8 figures, 1 table. Minor changes to match the published version

Scientific paper

10.1088/0004-637X/701/2/1373

We use the radial baryon acoustic oscillation (BAO) measurements of Gaztanaga et al. (2008) to constrain parameters of dark energy models. These constraints are comparable with constraints from other "non-radial" BAO data. The radial BAO data are consistent with the time-independent cosmological constant model but do not rule out time-varying dark energy. When we combine radial BAO and the Kowalski et al. (2008) Union type Ia supernova data we get very tight constraints on dark energy.

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