Simulating weak lensing by large scale structure

Details Simulating weak lensing by large scale structure Simulating weak lensing by large scale structure

2003-03-25

arxiv.org/abs/astro-ph/0303555v1

Astrophys.J.592:699-709,2003

Astronomy and Astrophysics

Astrophysics

11 pages

Scientific paper

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.

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