Dark energy and cosmic curvature: Monte-Carlo Markov Chain approach

Details Dark energy and cosmic curvature: Monte-Carlo Markov Chain approach Dark energy and cosmic curvature: Monte-Carlo Markov Chain approach

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aps..tsf.j5007w&link_type=abstract

American Physical Society, 2007 Joint Fall Meeting of the Texas Sections of the APS and AAPT; Zone 13 of SPS, October 18-20, 200

Physics

Scientific paper

We use the Monte-Carlo Markov Chain method to explore the dark energy property and the cosmic curvature by fitting two popular dark energy parameterizations to the observational data. The new 182 gold supernova Ia data and the ESSENCE data both give good constraint on the DE parameters and the cosmic curvature for the dark energy model φ0+φaz/(1+z) The cosmic curvature is found to be φk<=0.03 For the dark energy model φ0+φaz/(1+z)^2 the ESSENCE data gives better constraint on the cosmic curvature and we get φk<=0.02.

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