Constraining neutrino masses with weak-lensing multiscale peak counts

Understand

Massive neutrinos influence the background evolution of the Universe as well as the growth of structure.

• Being able to model this effect and constrain the sum of their masses is one of the key challenges in modern cosmology.
• Weak-lensing cosmological constraints will also soon reach higher levels of precision with next-generation surveys like LSST, WFIRST and Euclid.
• We use the MassiveNus simulations to derive constraints on the sum of neutrino masses $M_{\nu}$, the present-day total matter density $\Omega_{\rm m}$, and the primordial power spectrum normalization $A_{\rm s}$ in a tomographic setting.