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

Supernova Legacy Survey 3-years data sample

22 Jul 2011, 09:45
35m
Berlioz (Alpes Congrès - Alpexpo)

Berlioz

Alpes Congrès - Alpexpo

Parallel session talk Cosmology and Gravity

Speaker

Dr Delphine Hardin (LPNHE)

Description

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

Presentation Materials