Cosmology seminar: Signe Riemer-Sørensen

Signe Riemer-Sørensen is a post doc. working at the University of Queensland.

Neutrino mass and cosmology results from the WiggleZ Dark Energy Survey power spectrum modelling

 

The absolute neutrino mass scale is currently unknown, but can be constrained from cosmology. We use the large-scale structure information from the WiggleZ Dark Energy Survey to constrain the sum of neutrino masses and other cosmological parameters. The WiggleZ sample of high redshift blue galaxies minimise systematic effects that plague other surveys such as theoretical modelling, non-linear structure formation, pairwise galaxy velocities, redshift-space distortions, and galaxy bias.  The precision of our data combined with extensive testing on simulated data implies that the cosmological results are very sensitive to the modelling approach, and several commonly used approaches lead to systematic errors in the recovered parameter values. I will discuss the power spectrum modelling and the cosmological results.
 
Published Apr. 8, 2013 11:10 AM - Last modified Apr. 8, 2013 11:10 AM