Constraints on Scalar-Field Dark Energy from Galaxy Cluster Gas Mass Fraction versus Redshift Data
- 23 July 2004
- journal article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 612 (1) , L1-L4
- https://doi.org/10.1086/424037
Abstract
We use the Allen et al. (2004) Chandra measurements of x-ray gas mass fraction of 26 rich clusters to place constraints on the scalar-field dark energy model with inverse power law potential energy density. The constraints are consistent with, and typically more constraining than, those from other cosmological tests, and mildly favor the Einstein cosmological constant limit of the dark energy model.Comment: 10 pages, 3 figures, Version accepted by ApJL, with minor revisions and new referenceKeywords
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