Bayesian reconstruction of the gravitational potential from weak lensing
Szepietowski, Rafal (Institute of Cosmology and Gravitation, Univeristy of Portsmouth)

Mass mapping using weak lensing has been a very successful technique in cosmology as proven by the indication of a Dark Matter component in the Bullet Cluster. In addition, if combined with information from clustering and peculiar velocities, it can be a promising probe of Dark Energy and Modified Gravity. Here, I review the Bayesian approaches to weak lensing potential reconstruction and propose a Maximum-Probability method. I discuss how to incorporate prior information in the reconstruction process of 2D and 3D maps of the gravitational potential due to large scale structure and show the results of applying this method to N-body simulations.