Radio Interferometric Tests of General Relativity

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Radio Interferometric Tests of General Relativity

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Title: Radio Interferometric Tests of General Relativity
Author: Fomalont, Edward B.; Kopeikin, Sergei M.
Keywords: gravitation
interferometric techniques
Date: 2009-12-20
Publisher: arXiv
Citation: arXiv:0912.4038v1
Abstract: Since VLBI techniques give microarcsecond position accuracy of celestial objects, tests of GR using radio sources as probes of a gravitational field have been made. We present the results from two recent tests using the VLBA: In 2005, the measurement of the classical solar deflection; and in 2002, the measurement of the retarded gravitational deflection associated with Jupiter. The deflection experiment measured PPN-gamma to an accuracy of 0.0003; the Jupiter experiment measured the retarded term to 20% accuracy. The controversy over the interpretation of the retarded term is summarized.
URI: http://hdl.handle.net/10355/6814

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