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Measurement of the Gravitational Redshift Using A Clock in an Orbiting SatelliteA hydrogen maser clock is proposed for enclosure in an orbiting satellite to measure the gravitational effect on time scales with high accuracy. This experiment is used to test the principle of equivalence for clocks in space. Extremely narrow linewidth of Fe-57 radiation and absorption due to Mossbauer effect over 75 ft vertical distance was used to confirm the prediction of the equivalence principle to 1 part in 100. The fractional frequency shift of a satellite-borne oscillator observed from earth is also given.
Document ID
19720006136
Acquisition Source
Legacy CDMS
Document Type
Other - N/A
Authors
R F C Vessot (Smithsonian Astrophysical Observatory Cambridge, United States)
M W Levine (Harvard College Observatory Cambridge, United States)
Date Acquired
August 6, 2013
Publication Date
November 1, 1971
Publication Information
Publication: Proceedings of the Conference on Experimental Tests of Gravitation Theories
Publisher: National Aeronautics and Space Administration
Subject Category
Geophysics
Meeting Information
Meeting: Proceedings of the Conference on Experimental Tests of Gravitation Theories
Location: Pasadena, CA
Country: US
Start Date: November 11, 1970
End Date: November 13, 1970
Sponsors: National Aeronautics and Space Administration, Jet Propulsion Laboratory, European Space Research Organization
Accession Number
72N13785
Funding Number(s)
CONTRACT_GRANT: NSR-09-015-098
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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