EAS Publications Series

Issue		EAS Publications Series Volume 36, 2009 Dark Energy and Dark Matter: Observations, Experiments and Theories
Page(s)		127 - 132
DOI		10.1051/eas/0936017
Published online		30 May 2009

Dark Energy and Dark Matter: Observations, Experiments and Theories
E. Pécontal, T. Buchert, Ph. Di Stefano and Y. Copin (eds)
EAS Publications Series, 36 (2009) 127-132
DOI: 10.1051/eas/0936017

Limits on dark matter and cosmological constant from solar system dynamics

P. Jetzer and M. Sereno

Institut für Theoretische Physik, Universität Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland

Published online: 30 May 2009

Abstract
We discuss the influence of the cosmological constant $\Lambda$ on the solar system dynamics. Observational constraints are derived from measurements of the periastron advance of the planets. Moreover, we consider the change in the mean motion due to $\Lambda$ . Up to now, Earth and Mars data give the best constraint, $\Lambda~\sim~10^~\mathrm{km}^$ . If properly accounting for the gravito-magnetic effect, this upper limit on $\Lambda$ could greatly improve in the near future thanks to new data from planned or already operating space-missions. Dark matter or modifications of the Newtonian inverse-square law in the solar system are discussed as well. Variations in the 1/r² behavior are considered in the form of either a possible Yukawa-like interaction or a modification of gravity of MOND type.

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