16–17 Sept 2024
Sestri Levante
Europe/Rome timezone

Nonlinear galaxy clustering in massive neutrino cosmologies

16 Sept 2024, 14:40
20m
Sestri Levante

Sestri Levante

Hotel Grande Albergo, Via Vittorio Veneto, 2, 16039 Sestri Levante (GE)

Speaker

Francesco Verdiani (SISSA)

Description

Upcoming data from galaxy surveys has the potential to yield a detection of the sum of the neutrino masses. Therefore, state-of-the-art models for full-shape analyses of correlation functions need a complete validation in the context of massive neutrino cosmologies.
We perform a joint analysis of the power spectrum and bispectrum using a suite of mock galaxy catalogs built upon N-body simulations with massive neutrinos. The accuracy, constraining power, and degeneracies of the 1-loop EFT-based model, along with the role of the priors, are assessed.
To the same end, we investigate the potential ambiguities in the generalization of the Kaiser formula, as well as the issue of velocity bias, in the presence of massive neutrinos. These are relevant for an accurate modeling of the anisotropic clustering.

Primary author

Presentation materials