Observational constraints on the early dark energy model

Details Observational constraints on the early dark energy model Observational constraints on the early dark energy model

Jul 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011raa....11..751f&link_type=abstract

Research in Astronomy and Astrophysics, Volume 11, Issue 7, pp. 751-758 (2011).

Astronomy and Astrophysics

Astrophysics

Scientific paper

Dark energy can be studied by its influence on the expansion of the Universe. We investigate current constraints on early dark energy (EDE) achievable by the combined observational data from type Ia supernovae (557), baryon acoustic oscillations, the current cosmic microwave background and the observed Hubble parameter. We find that combining these data sets provides powerful constraints on early dark energy and the best fit values of the parameters in 68% and 95% confidence-level regions are: Ωm0 = 0.2897+0.0149+0.0207-0.0138-0.0194, Ωe = 0.0129+0.0272+0.0381-0.0129-0.0129, w0 = -1.0415+0.0891+0.1182-0.109-0.1604, and h = 0.6988+0.0059+0.0083-0.0058-0.0081.

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