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The restoration of the quadrupole light bending

Published online by Cambridge University Press:  01 October 2007

M. T. Crosta ,
D. Gardiol ,
M. G. Lattanzi  and
R. Morbidelli
M. T. Crosta
Affiliation:
INAF-OATo, Strada Osservatorio 20, Pino Torinese, Torino, Italy, email: [email protected]
D. Gardiol
Affiliation:
INAF-OATo, Strada Osservatorio 20, Pino Torinese, Torino, Italy, email: [email protected]
M. G. Lattanzi
Affiliation:
INAF-OATo, Strada Osservatorio 20, Pino Torinese, Torino, Italy, email: [email protected]
R. Morbidelli
Affiliation:
INAF-OATo, Strada Osservatorio 20, Pino Torinese, Torino, Italy, email: [email protected]
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Abstract

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The ESA astrometric mission Gaia will be able to put to test General Relativity thanks to differential astrometric measurements. The differential experiment, GAREX, implemented in the form of repeated Eddington-like measurement, aims at measuring the quadrupole light bending due to an oblate planet by comparing the evolution of relative distances in stellar fields in the vicinity of it. Simulations which utilize (i) selected fields extracted from the GSCII data base, (ii) a realistic error model as function of the star's magnitude and distance from Jupiter's edge, show the real best scenarios and how to improve the Gaia ability to detect this relativistic effect.

Keywords

astrometryrelativitysolar system: generalcatalogs
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. 395 - 396
Copyright
Copyright © International Astronomical Union 2008

References

Crosta, M. T. & Mignard, F., 2006, Class. Quantum Grav. 23, 4853–4871CrossRefGoogle Scholar
Crosta, M. T., Gardiol, D., Lattanzi, M. G., & Morbidelli, R.The restoration of the quadrupole light bending by Gaia observations, to be submittedGoogle Scholar