17-24 July 2013
KTH and Stockholm University Campus
Europe/Stockholm timezone

Neutrino masses from Large Scale Structures - including theoretical errors

19 Jul 2013, 17:00
45m
F3 (KTH Campus)

F3

KTH Campus

Talk presentation Cosmology and Gravity Cosmology and Gravity

Speaker

Benjamin Audren (EPFL Lausanne)

Description

I will present forecasts for the accuracy of determining the parameters of a minimal LCDM and the total neutrino mass for a Euclid-like survey. To include as much information as possible, and use the midly non-linear scales in a meaningful way, I will present our method of including theoretical errors. Two sets of errors are considered: (i) one to account for uncertainties in the modelling of the effect of neutrinos on the non-linear galaxy power spectrum and (ii) to parametrize the overall residual uncertainties in modelling the non-linear galaxy power spectrum at small scales. I will discuss how the inclusion of these errors impact the error on Mnu by comparing different ansatz, and I will also mention the effect of taking into account data from smaller scales considering our current understanding of non-linearities. I will also discuss how this method can be extended to other probes to have a reliable estimate of the current and achievable sensitivity to the total neutrino mass.

Primary author

Benjamin Audren (EPFL Lausanne)

Presentation Materials