CFHTLS weak-lensing constraints on the neutrino masses

Ismael Tereno , Carlo Schimd (1) , Jean-Philippe Uzan , Martin Kilbinger , Frederic H. Vincent , Liping Fu

1 LAM - Laboratoire d'Astrophysique de Marseille

We use measurements of cosmic shear from CFHTLS, combined with WMAP-5 cosmic microwave background anisotropy data, baryonic acoustic oscillations from SDSS and 2dFGRS and supernovae data from SNLS and Gold-set, to constrain the neutrino mass. We obtain a 95% confidence level upper limit of 0.54 eV for the sum of the neutrino masses, and a lower limit of 0.03 eV. The preference for massive neutrinos weakens when shear-measurement systematics are included in the analysis.

Domaines: Cosmologie et astrophysique extra-galactique [astro-ph.CO]

Ismael Tereno, Carlo Schimd, Jean-Philippe Uzan, Martin Kilbinger, Frederic H. Vincent, et al.. CFHTLS weak-lensing constraints on the neutrino masses. 2008. ⟨hal-00370562⟩