Relativistic gravitational deflection of light and its impact on the modeling accuracy for the Space Interferometry Mission

Abstract

We study the impact of relativistic gravitational deflection of light on the accuracy of future Space Interferometry Mission (SIM). We estimate the deflection angles caused by the monopole, quadrupole and octupole components of gravitational fields for a number of celestial bodies in the solar system. We observe that, in many cases, the magnitude of the corresponding effects is significantly larger than the 1 uas accuracy expected from SIM. This fact argues for the development of a relativistic observational model for the mission that would account for the influence of both static and time-varying effects of gravity on light propagation. Results presented here are different from the ones obtained elsewhere by the fact that we specifically account for the differential nature of the future SIM astrometric measurements. We also obtain an estimate for the accuracy of possible determination of the Eddington's parameter γvia SIM global astrometric campaign; we conclude that accuracy of ~7 x 10^{-6} is achievable via measurements of deflection of light by solar gravity.

arXiv commentrevtex4, 20 pages, 9 figures, 13 tables

References in corpus (20)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• The Confrontation between General Relativity and Experiment
• The Confrontation between General Relativity and Experiment
• GAIA: Composition, Formation and Evolution of the Galaxy
• The IAU 2000 resolutions for astrometry, celestial mechanics and metrology in the relativistic framework: explanatory supplement
• Astrometry and geodesy with radio interferometry: experiments, models, results
• Lorentz Covariant Theory of Light Propagation in Gravitational Fields of Arbitrary-Moving Bodies
• The Measurement of the Light Deflection from Jupiter: Experimental Results
• Experimental Tests of General Relativity
• Gravitomagnetic Effects in the Propagation of Electromagnetic Waves in Variable Gravitational Fields of Arbitrary-Moving and Spinning Bodies
• Taking the Measure of the Universe: Precision Astrometry with SIM PlanetQuest
• Gravitational bending of light by planetary multipoles and its measurement with microarcsecond astronomical interferometers
• Astrometric Effects of Secular Aberration
• Micro-arcsecond light bending by Jupiter
• On the Gravitomagnetic Time Delay
• Physically adequate proper reference system of a test observer and relativistic description of the GAIA attitude
• Space-based research in fundamental physics and quantum technologies
• General relativistic model for experimental measurement of the speed of propagation of gravity by VLBI
• Radio Tests of GR
• Analytical Modeling of the White Light Fringe

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• Plan for VLBI observations of close approaches of Jupiter to compact extragalactic radio sources in 2014-2016