Dynamical effects of a cosmological constant

Details Dynamical effects of a cosmological constant Dynamical effects of a cosmological constant

2000-02-07

arxiv.org/abs/astro-ph/0002152v2

Astronomy and Astrophysics

Astrophysics

7 pages, standard Latex, no macros. Added reference and minor clarifications

Scientific paper

The observational evidence for the existence of a non-zero cosmological constant is getting stronger. It is therefore timely to address the question of its eventual effect on the dynamics of galaxies, clusters and larger structures in the Universe. We find, contrary to a recent claim, that the influence of the cosmological constant has to be negligible for, e.g., the rotation curves of galaxies. On larger scales, starting with large galaxy clusters, there are potentially measurable effects from the repulsive addition to the Newtonian gravitational force caused by the cosmological constant.

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