Numerical Methods in Gravitational Lensing
Astrophysics
2007-05-23 v1
Abstract
Most problems in gravitational lensing require numerical solutions. The most frequent types of problems are (1) finding multiple images of a single source and classifying the images according to their properties like magnification or distortion; (2) propagating light rays through large cosmological simulations; and (3) reconstructing mass distributions from their tidal field. This lecture describes methods for solving such problems. Emphasis is put on using adaptive-grid methods for finding images, issues of spatial resolution and reliability of statistics for weak lensing by large-scale structures, and methodical questions related to shear-inversion techniques.
Cite
@article{arxiv.astro-ph/0304162,
title = {Numerical Methods in Gravitational Lensing},
author = {Matthias Bartelmann},
journal= {arXiv preprint arXiv:astro-ph/0304162},
year = {2007}
}
Comments
gravitational lensing winter school, Aussois, la vieille Europe, 2003