Tests of gravity at the solar system scale

Details Tests of gravity at the solar system scale Tests of gravity at the solar system scale

2011-07-25

arxiv.org/abs/1107.4987v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages, Proceedings of 46th Rencontres de Moriond

Scientific paper

As confirmed by tests performed in the solar system, General Relativity (GR) presently represents the best description of gravitation. It is however challenged by observations at very large length scales, and already at the solar system scale, tracking of the Pioneer 10/11 probes has failed to confirm their expected behavior according to GR. Metric extensions of GR, which are presented here, have the quality of preserving the fundamental properties of GR while introducing scale dependent modifications. We show that they moreover represent an appropriate family of gravitation theories to be compared with observations when analysing gravity tests. We also discuss different tests which could allow one to determine the metric extension of GR prevailing in the solar system.

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