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Constraints on the gravitational force on photons from microlensing
Phys. Rev. D 65, 062002 – Published 27 February, 2002
DOI: https://doi.org/10.1103/PhysRevD.65.062002
Abstract
Gravitational microlensing observations are used to study the radial dependence of the gravitational force acting on photons. The Newton inverse square law is shown to be valid at a few % level at a distance scale of a few AU (where is the astronomical unit). Constraints on possible non-Newtonian terms are derived.
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