Nuw CDM cosmology from the weak lensing convergence PDF

Understand

Pinning down the total neutrino mass and the dark energy equation of state is a key aim for upcoming galaxy surveys.

• Weak lensing is a unique probe of the total matter distribution whose non-Gaussian statistics can be quantified by the one-point probability distribution function (PDF) of the lensing convergence.
• We calculate the convergence PDF on mildly non-linear scales from first principles using large-deviation statistics, accounting for dark energy and the total neutrino mass.
• For the first time, we comprehensively validate the cosmology-dependence of the convergence PDF model against large suites of simulated lensing maps, demonstrating its percent-level precision and accuracy.