Caustics in special multiple lenses
天体物理学
2011-05-23 v2
摘要
Despite its mathematical complexity, the multiple gravitational lens can be studied in detail in every situation where a perturbative approach is possible. In this paper, we examine the caustics of a system with a lens very far from the others with respect to their Einstein radii, and a system where mutual distances between lenses are small compared to the Einstein radius of the total mass. Finally we review the case of a planetary system adding some new information (area of caustics, duality and higher order terms).
引用
@article{arxiv.astro-ph/9910535,
title = {Caustics in special multiple lenses},
author = {V. Bozza},
journal= {arXiv preprint arXiv:astro-ph/9910535},
year = {2011}
}
备注
11 pages, 7 figures, submitted to A & A