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Gravitational bending of light by planetary multipoles and its measurement with microarcsecond astronomical interferometers

Published online by Cambridge University Press:  01 October 2007

S. Kopeikin  and
V. Makarov
S. Kopeikin
Affiliation:
Department of Physics & Astronomy, University of Missouri-Columbia, Columbia, MO 65211 email: kopeikins@missouri.edu
V. Makarov
Affiliation:
Michelson Science Center, California Technology Institute, Pasadena, CA 91125 email: vvm@caltech.edu
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Abstract

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General relativistic deflection of light by mass, dipole, and quadrupole moments of gravitational field of a moving massive planet in the Solar system is derived in the approximation of the linearized Einstein equations. All terms of the order of 1 μas and larger are taken into account, parameterized, and classified in accordance with their physical origin. We discuss the observational capabilities of the near-future optical and radio interferometers for detecting the Doppler modulation of the radial deflection, and the dipolar and quadrupolar light-ray bending by Jupiter and Saturn.

Keywords

gravitationgravitational lensingastrometryreference systemsplanets and satellites: individual (Jupiter)Saturntechniques: interferometric
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S248: A Giant Step: from Milli- to Micro-arcsecond Astrometry , October 2007 , pp. 391 - 394
Copyright
Copyright © International Astronomical Union 2008

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