Simulating weak lensing by large scale structure
- Author(s): Vale, Chris
- White, Martin
- et al.
Published Web Locationhttps://doi.org/10.1086/375867
We model weak gravitational lensing of light by large-scale structure using ray tracing through N-body simulations. The method is described with particular attention paid to numerical convergence. We investigate some of the key approximations in the multi-plane ray tracing algorithm. Our simulated shear and convergence maps are used to explore how well standard assumptions about weak lensing hold, especially near large peaks in the lensing signal.