Gravitational lenses: odd or even images?

DOI10.1088/0264-9381/16/6/303zbMath0942.83009OpenAlexW1997328501WikidataQ56866667 ScholiaQ56866667MaRDI QIDQ4699977

Marco J. Lombardi, Fabio Giannoni

Publication date: 18 November 1999

Published in: Classical and Quantum Gravity (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1088/0264-9381/16/6/303

zbMATH Keywords

Morse relationsgravitational lens effectEinstein crosslight rays in vacuum space-timesthin lens model

Mathematics Subject Classification ID

Abstract critical point theory (Morse theory, Lyusternik-Shnirel'man theory, etc.) in infinite-dimensional spaces (58E05) Observational and experimental questions in relativity and gravitational theory (83B05) Equations of motion in general relativity and gravitational theory (83C10)

Related Items (3)

A timelike extension of Fermat's principle in general relativity and applications ⋮ Global variational methods on a class of nonsmooth nonholonomic constraints ⋮ Morse theory of causal geodesics in a stationary spacetime via Morse theory of geodesics of a Finsler metric

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