20-27 July 2011
Alpes Congrès - Alpexpo
Europe/Paris timezone

Supernova Legacy Survey 3-years data sample

22 Jul 2011, 09:45
Berlioz (Alpes Congrès - Alpexpo)


Alpes Congrès - Alpexpo

Parallel session talk Cosmology and Gravity


Dr Delphine Hardin (LPNHE)


We present the recent results from the analysis of the Supernova Legacy Survey 3-years data sample. For the dark energy equation of state, assuming a flat universe, we measure a w parameter consistent with a cosmological constant with a precision of 0.2. We have paid particular attention to the systematic uncertainties. We combine the SNe data with baryon acoustic oscillation measurements from the Sloan Digital Sky Survey (SDSS) and measurements of the cosmic microwave background power spectrum from the WMAP-7 year data, to obtain, under the flat universe hypothesis, a measurement of the dark energy equation of state w = -1.068 with a precision of 0.08.

Primary author

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