Bound on the Dark Matter Density in the Solar System from Planetary Motions

Astronomy and Astrophysics – Astrophysics

Scientific paper

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7 pages, 1 figure

Scientific paper

10.1103/PhysRevD.77.083005

High precision planet orbital data extracted from direct observation, spacecraft explorations and laser ranging techniques enable to put a strong constraint on the maximal dark matter density of a spherical halo centered around the Sun. The maximal density at Earth's location is of the order $10^5$ ${\rm GeV/cm^3}$ and shows only a mild dependence on the slope of the halo profile, taken between 0 and -2. This bound is somewhat better than that obtained from the perihelion precession limits.

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