Improved bounds on non-luminous matter in solar orbit

Details Improved bounds on non-luminous matter in solar orbit Improved bounds on non-luminous matter in solar orbit

1995-03-17

arxiv.org/abs/hep-ph/9503368v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, Latex

Scientific paper

10.1086/176017

We improve, using a larger set of observations including Voyager 2 Neptune flyby data, previous bounds on the amount of dark matter (DM) trapped in a spherically symmetric distribution about the sun. We bound DM by noting that such a distribution would increase the effective mass of the sun as seen by the outer planets and by finding the uncertainty in that effective mass for Uranus and Neptune in fits to the JPL Developmental Ephermeris residuals, including optical data and those two planets' Voyager 2 flybys. We extend our previous procedure by fitting more parameters of the developmental ephemerides. Additionally, we present here the values for Pioneer 10 and 11 and Voyager 1 and 2 Jupiter ranging normal points (and incorporate these data as well). Our principal result is to limit DM in spherically symmetric distributions in orbit about the sun interior to Neptune's orbit to less than an earth mass and interior to Uranus' orbit to about 1/6 of an earth's mass.

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