Abstract
We investigate the so-called magnification relations of gravitational lensing models. We show that multidimensional residue integrals provide a simple explanation for the existence of these relations, and an effective method of computation. We illustrate the method with several examples, thereby deriving new magnification relations for galaxy lens models and microlensing (point mass lensing).
Original language | English (US) |
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Pages (from-to) | 1818-1836 |
Number of pages | 19 |
Journal | Journal of Mathematical Physics |
Volume | 42 |
Issue number | 4 |
DOIs | |
State | Published - Apr 2001 |
Externally published | Yes |
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Mathematical Physics