%0 Journal Article
%T Time-delay and Doppler tests of the Lorentz symmetry of gravity
%A Quentin G. Bailey
%J Physics
%D 2009
%I arXiv
%R 10.1103/PhysRevD.80.044004
%X Modifications to the classic time-delay effect and Doppler shift in General Relativity (GR) are studied in the context of the Lorentz-violating Standard-Model Extension (SME). We derive the leading Lorentz-violating corrections to the time-delay and Doppler shift signals, for a light ray passing near a massive body. It is demonstrated that anisotropic coefficients for Lorentz violation control a time-dependent behavior of these signals that is qualitatively different from the conventional case in GR. Estimates of sensitivities to gravity-sector coefficients in the SME are given for current and future experiments, including the recent Cassini solar conjunction experiment.
%U http://arxiv.org/abs/0904.0278v2