Linear and Non-Linear Gravitational Corrections to Conventional Gravitational Lensing

Presented by Bin Chen, University of Oklahoma

I will talk about the Swiss cheese gravitational lensing theory on which our group has been working recently. We claim that a correction to both bending angles and time delays are necessary at the percentage level. We also have found a non-negligible effect of the cosmological constant on cluster lensing. I will also briefly talk about cosmic lensing in a perturbed FLRW universe and the integrated Sachs-Wolfe effect induced by large scale structures.