Test of the gravitational redshift effect at Saturn

Details Test of the gravitational redshift effect at Saturn Test of the gravitational redshift effect at Saturn

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990phrvl..64.1322k&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 64, March 19, 1990, p. 1322-1325.

Physics

18

Gravitational Effects, Planetary Magnetospheres, Red Shift, Saturn (Planet), Voyager 1 Spacecraft, Frequency Shift, Radiosondes, Saturn, Gravity Effects, Spacecraft Observations, Voyager Missions, Theoretical Studies, Calculations, Radio Methods, Analysis, Radiation, Frequencies, Parameters, Techniques, Equipment, Perturbations, Models

Scientific paper

The results of a test of the gravitational redshift effect at Saturn are reported. Measurements of the redshift were obtained with the Voyager 1 spacecraft during its encounter with Saturn in 1980. Because the spacecraft was equipped with an ultrastable crystal oscillator (USO), it is possible to test the redshift effect at an interesting level of accuracy. Assuming that radiation in the Saturn magnetosphere has had a negligible effect on the USO, the prediction of general relativity to an accuracy of 1 percent is verified. This limit could be of interest for constraining possible alternative theories of gravity.

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