Simulating weak lensing by large-scale structure

被引：102
|
作者：
Vale, C
White, M
机构：
[1] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA
[2] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
来源：
ASTROPHYSICAL JOURNAL | 2003年 / 592卷 / 02期
关键词：
cosmology : theory; gravitational lensing; large-scale structure of universe;
D O I：
10.1086/375867
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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.
引用
收藏
页码：699 / 709
页数：11
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