Cosmological constraints from HSC Y1 lensing convergence PDF

Understand

We utilize the probability distribution function (PDF) of normalized convergence maps reconstructed from the Subaru Hyper Suprime-Cam (HSC) Y1 shear catalogue, in combination with the power spectrum, to measure the matter clustering amplitude $S_8=\sigma_8\sqrt{\Omega_m/0.3}$.

• The large-scale structure's statistical properties are incompletely described by the traditional two-point statistics, motivating our investigation of the PDF -- a complementary higher-order statistic.
• By defining the PDF over the standard deviation-normalized convergence map we are able to isolate the non-Gaussian information.
• We use tailored simulations to compress the data vector and construct a likelihood approximation.