A comparison of approximate gravitational lens equations and a proposal for an improved new one

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dc.creatorBozza, V.
dc.date2008-07-24
dc.date2008-10-28
dc.date.accessioned2026-07-07T12:15:06Z
dc.date.available2026-07-07T12:15:06Z
dc.descriptionKeeping the exact general relativistic treatment of light bending as a reference, we compare the accuracy of commonly used approximate lens equations. We conclude that the best approximate lens equation is the Ohanian lens equation, for which we present a new expression in terms of distances between observer, lens and source planes. We also examine a realistic gravitational lensing case, showing that the precision of the Ohanian lens equation might be required for a reliable treatment of gravitational lensing and a correct extraction of the full information about gravitational physics.
dc.description11 pages, 6 figures, to appear on Physical Review D
dc.identifierhttps://arxiv.org/abs/0807.3872
dc.identifierhttp://arxiv.org/abs/0807.3872
dc.identifierPhys.Rev.D78:103005,2008
dc.identifierdoi:10.1103/PhysRevD.78.103005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/211409
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.titleA comparison of approximate gravitational lens equations and a proposal for an improved new one
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