The Ray Bundle method for calculating weak magnification by gravitational lenses
Astrophysics
2009-10-31 v1
Abstract
We present here an alternative method for calculating magnifications in gravitational lensing calculations -- the Ray Bundle method. We provide a detailed comparison between the distribution of magnifications obtained compared with analytic results and conventional ray-shooting methods. The Ray Bundle method provides high accuracy in the weak lensing limit, and is computationally much faster than (non-hierarchical) ray shooting methods to a comparable accuracy. The Ray Bundle method is a powerful and efficient technique with which to study gravitational lensing within realistic cosmological models, particularly in the weak lensing limit.
Keywords
Cite
@article{arxiv.astro-ph/9812300,
title = {The Ray Bundle method for calculating weak magnification by gravitational lenses},
author = {C. J. Fluke and R. L. Webster and Daniel J. Mortlock},
journal= {arXiv preprint arXiv:astro-ph/9812300},
year = {2009}
}
Comments
9 pages Latex, 8 figures, submitted to MNRAS