Speaker: Matin Kunz (University of Geneva)
Title: Lensing and large-scale structure observations
Abstract:
We often assume that we observe the universe the way it is there, but actually there are things happening to light between there and here. An important such effect is gravitational lensing, which affects all observations made across our clumpy universe. In my talk I will particularly focus on observations of the large-scale structure and show some recent results on the impact of lensing on number counts, and some ideas (partially preliminary) on how to extract the lensing information from such observations.