Journal
ASTROPHYSICAL JOURNAL
Volume 592, Issue 2, Pages 699-709Publisher
UNIV CHICAGO PRESS
DOI: 10.1086/375867
Keywords
cosmology : theory; gravitational lensing; large-scale structure of universe
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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 multiplane 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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