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

Mar 26, 2004
4 pages
Published in:
  • Phys.Rev.Lett. 92 (2004) 121101
DOI:
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Abstract: (APS)
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.
  • 04.80.Cc
  • 95.85.Bh
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