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Gravitational lensing in metric theories of gravity

M. Sereno
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Abstract

Gravitational lensing in metric theories of gravity is discussed. I introduce a generalized approximate metric element, inclusive of both post-post-Newtonian (ppN) contributions and gravito-magnetic field. Following Fermat's principle and standard hyphoteses, I derive the time delay function and deflection angle caused by an isolated mass distribution. Several astrophysical systems are considered. In most of the cases, the gravito-magnetic correction offers the best perspectives for an observational detection. Actual measurements distinguish only marginally different metric theories one from another.

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BibTeXRIS

M. Sereno. 2003-01-15. Gravitational lensing in metric theories of gravity. https://doi.org/10.1103/physrevd.67.064007

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