Multipole Expansion Model in Gravitational Lensing
Astrophysics
2009-10-30 v1
Abstract
Non-transparent models of multipole expansion model and two point-mass model are analyzed from the catastrophe theory. Singularity behaviours of -pole moments are discussed. We apply these models to triple quasar PG1115+080 and compare with the typical transparent model, softened power law spheroids. Multipole expansion model gives the best fit among them.
Cite
@article{arxiv.astro-ph/9702003,
title = {Multipole Expansion Model in Gravitational Lensing},
author = {T. Fukuyama and Y. Kakigi and T. Okamura},
journal= {arXiv preprint arXiv:astro-ph/9702003},
year = {2009}
}
Comments
24 pp, Latex, 5 PostScript Figures