Bounds on dark matter in solar orbit

Details Bounds on dark matter in solar orbit Bounds on dark matter in solar orbit

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...342..539a&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 342, July 1, 1989, p. 539-544. Research supported by NSF and DOE.

Astronomy and Astrophysics

Astrophysics

18

Dark Matter, Gravitational Fields, Neptune (Planet), Solar Orbits, Uranus (Planet), Planetary Orbits, Solar System, Voyager 2 Spacecraft

Scientific paper

The possibility is considered that a spherical distribution of dark matter (DM), matter not visible with current instruments, is trapped in the sun's gravitational field. Bounds are placed from the motion of Uranus and Neptune, on the amount of DM that could be so trapped within the radius of those planets' orbits, as follows: from the Voyager 2, Uranus-flyby data new, more accurate ephemeris values are generated. Trapped DM mass is bounded by noting that such a distribution would increase the effective mass of the sun as seen by the outer planets and by using the new ephemeris values to bound such an increase.

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