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Title:
Measurements of the solar gravitational deflection of radio waves in agreement with general relativity
Authors:
Fomalont, E. B.; Sramek, R. A.
Affiliation:
AA(National Radio Astronomy Observatory, Green Bank, W. Va.), AB(National Astronomy and Ionosphere Center, Arecibo, P.R.)
Publication:
Physical Review Letters, vol. 36, June 21, 1976, p. 1475-1478. (PhRvL Homepage)
Publication Date:
06/1976
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Gravitational Effects, Radio Sources (Astronomy), Radio Waves, Relativistic Theory, Solar Gravitation, Deflection, Gravitation Theory, Radio Interferometers
DOI:
10.1103/PhysRevLett.36.1475
Bibliographic Code:
1976PhRvL..36.1475F

Abstract

In two experiments in 1974 and 1975 which utilized a radio interferometer of 35-km baseline, the relative positions of three radio sources were monitored over a period of a month when the sun was within 10 deg of the sources. The mean gravitational deflection is 1.007 + or - 0.009 (standard error) times the value predicted by general relativity. These results exclude the Brans-Dicke theory of gravitation with a scalar coupling constant of less than 23 at the 99% confidence level.
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Database: Astronomy
Physics
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