期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 379, 期 1, 页码 169-175出版社
OXFORD UNIV PRESS
DOI: 10.1111/j.1365-2966.2007.11924.x
关键词
cosmic microwave background; cosmological parameters; cosmology : miscellaneous; distance scale; large-scale structure of Universe
We carry out a Bayesian model selection analysis of different dark energy parametrization s 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 [Delta ln (E) similar to 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.
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