Weak Lensing Minima and Peaks: Cosmological Constraints and the Impact of Baryons

Understand

We present a novel statistic to extract cosmological information in weak lensing data: the lensing minima.

• We also investigate the effect of baryons on the cosmological constraints from peak and minimum counts.
• Using the \texttt{MassiveNuS} simulations, we find that lensing minima are sensitive to non-Gaussian cosmological information and are complementary to the lensing power spectrum and peak counts.
• For an LSST-like survey, we obtain $95\%$ credible intervals from a combination of lensing minima and peaks that are significantly stronger than from the power spectrum alone, by $44\%$, $11\%$, and $63\%$ for the neutrino mass sum $\sum m_\nu$, matter density $\Omega_m$, and amplitude of fluctuation $A_s$, respectively.