Comments on the gravitational lensing magnification
Astrophysics
2009-10-30 v1
Abstract
We rederive a relation between gravitational lensing magnification relative to the standard Friedmann distance and one relative to the Dyer-Roeder distance by investigating the null geodesic deviation equation. We show that the relation comes from a natural consequence of the definition of the lensing magnification matrices and is not based on the averaging of the magnifications, which has conventionally been used to derive it. We therefore conclude that the relation is true for each individual ray bundle.
Keywords
Cite
@article{arxiv.astro-ph/9808338,
title = {Comments on the gravitational lensing magnification},
author = {Takashi Hamana},
journal= {arXiv preprint arXiv:astro-ph/9808338},
year = {2009}
}
Comments
6 pages, no figures, LaTex using ptptex.sty and ptp-text.sty