Résumé
A lot of fundamental tests of gravitational theories rely on highly
precise measurements of the travel time and/or the frequency shift of
electromagnetic signals propagating through the gravitational field of
the Solar System. In practically all of the previous studies, the
explicit expressions of such travel times and frequency shifts as
predicted by various metric theories of gravity are derived from an
integration of the null geodesic differential equations. However, the
solution of the geodesic equations requires heavy calculations when one
has to take into account the presence of mass multipoles in the
gravitational field or the tidal effects due to the planetary motions,
and the calculations become quite complicated in the
post-post-Minkowskian approximation. This difficult task can be avoided
using the time transfer function's formalism. We present here our last
advances in the formulation of the one-way frequency shift using this
formalism up to the post-post-Minkowskian approximation.
langue originale | Anglais |
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titre | SF2A-2012: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics |
Pages | 145-148 |
Etat de la publication | Publié - 2012 |