Magnification relations in gravitational lensing via multidimensional residue integrals

Neal Dalal, Jeffrey M. Rabin

Research output: Contribution to journalArticlepeer-review

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 languageEnglish (US)
Pages (from-to)1818-1836
Number of pages19
JournalJournal of Mathematical Physics
Volume42
Issue number4
DOIs
StatePublished - Apr 2001
Externally publishedYes

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Mathematical Physics

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