Limits on dark matter and cosmological constant from solar system dynamics

P. Jetzer; M. Sereno

doi:10.1051/eas/0936017

All issues

Volume 36 (2009)

EAS Publications Series, 36 (2009) 127-132

Abstract

Issue		EAS Publications Series Volume 36, 2009 Dark Energy and Dark Matter: Observations, Experiments and Theories


Page(s)		127 - 132
DOI		https://doi.org/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

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

Abstract

We discuss the influence of the cosmological constant Λ 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 Λ. Up to now, Earth and Mars data give the best constraint, Λ ~ 10^-36 km^-2. If properly accounting for the gravito-magnetic effect, this upper limit on Λ 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.