Morphology of Weak Lensing Convergence Maps

Understand

We study the morphology of convergence maps by perturbatively reconstructing their Minkowski Functionals (MFs).

• We present a systematics study using a set of three generalised skew-spectra as a function of source redshift and smoothing angular scale.
• Using an approach based on pseudo-$S_{\ell}$s (PSL) we show how these spectra will allow reconstruction of MFs in the presence of an arbitrary mask and inhomogeneous noise in an unbiased way.
• Our theoretical predictions are based on a recently introduced fitting function to the bispectrum.