2007/01/24 by Paolo Serra, P. Serra, Alan Heavens +2
Physics and Astronomy · #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #Gamma-ray bursts and supernovae #astro-ph #gr-qc #hep-ph
paper · pdf · doi:10.1111/j.1365-2966.2007.11924.x
published as Mon.Not.Roy.Astron.Soc.379:169-175,2007 · 8 Pages, 8 Figures, Discussion on VEGAS extended, References added, typos corrected
arxiv created 2007/01/24 · openalex publication_date 2007/06/22 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We carry out a Bayesian model selection analysis of different dark energy parametrizations using the recent luminosity distance data of high-redshift supernovae from Riess et al. and from the new ESSENCE Supernova Survey. Including complementary cosmological data sets, we found substantial Evidence [Δln (E) ∼ 1] against a time-varying dark energy equation-of-state parameter, and against phantom dark energy models. We find a small preference for a standard cosmological constant over accelerating non-phantom models where w is constant, but allowed to vary in the range −1 to −0.33.