Measurement of the Solar Gravitational Deflection of Radio Waves using Geodetic Very-Long-Baseline Interferometry Data, 1979 1999

Details Measurement of the Solar Gravitational Deflection of Radio Waves using Geodetic Very-Long-Baseline Interferometry Data, 1979 1999 Measurement of the Solar Gravitational Deflection of Radio Waves using Geodetic Very-Long-Baseline Interferometry Data, 1979 1999

Mar 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004phrvl..92l1101s&link_type=abstract

Physical Review Letters, vol. 92, Issue 12, id. 121101

Physics

96

Experimental Tests Of Gravitational Theories, Radio, Microwave

Scientific paper

We used very-long-baseline interferometry (VLBI) to measure the deflection by the Sun of radio waves emanating from distant compact radio sources. This bending is characterized in the parametrized post-Newtonian formalism by γ, which is unity in general relativity. Using a large geodetic VLBI data set, we obtained γ=0.99983±0.00045 (estimated standard error). We found no systematic biases from our analysis of subgroups of data.

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