Constraints on Galileon-induced precessions from solar system orbital motions

Abstract

We use latest data from solar system planetary orbital motions to put constraints on some Galileon-induced precessional effects. Due to the Vainshtein mechanism, the Galileon-type spherically symmetric field of a monopole induces a small, screened correction proprtional to \sqrt{r} to its usual r^-1 Newtonian potential which causes a secular precession of the pericenter of a test particle. In the case of our solar system, latest data from Mars allow to constrain the magnitude of such an interaction down to α<= 0.3 level. Another Galileon-type effect which might impact solar system dynamics is due to an unscreened constant gradient induced by the peculiar motion of the Galaxy. The magnitude of such an effect, depending on the different gravitational binding energies of the Sun and the planets, is ξ<= 0.004 from the latest bounds on the supplementary perihelion precession of Saturn.

LaTex2e, 11 pages, 1 table, no figures, 35 references. To appear in Journal of Cosmology and Astroparticle Physics (JCAP)

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• Generalized Galileons: All scalar models whose curved background extensions maintain second-order field equations and stress tensors
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Cited by in corpus (11)

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• Dynamical analysis of generalized Galileon cosmology
• Vainshtein Mechanism in Binary Pulsars
• Constraining some Horndeski gravity theories
• Metric-affine gravity effects on terrestrial (exo-)planets profiles
• Local cosmological effects of the order of H in the orbital motion of a binary system
• The two-body potential of Vainshtein screened theories
• Non-homogeneous exoplanets in metric-affine gravity
• Constraining dark matter sub-structure with the dynamics of astrophysical systems
• Dynamical system analysis in modified Galileon cosmology