English

Dark matter chaos in the Solar System

Earth and Planetary Astrophysics 2013-02-26 v2 Chaotic Dynamics

Abstract

We study the capture of galactic dark matter particles in the Solar System produced by rotation of Jupiter. It is shown that the capture cross section is much larger than the area of Jupiter orbit being inversely diverging at small particle energy. We show that the dynamics of captured particles is chaotic and is well described by a simple symplectic dark map. This dark map description allows to simulate the scattering and dynamics of 101410^{14} dark matter particles during the life time of the Solar System and to determine dark matter density profile as a function of distance from the Sun. The mass of captured dark matter in the radius of Neptune orbit is estimated to be 21015g2 \cdot 10^{15} g. The radial density of captured dark matter is found to be approximately constant behind Jupiter orbit being similar to the density profile found in galaxies.

Keywords

Cite

@article{arxiv.1211.0903,
  title  = {Dark matter chaos in the Solar System},
  author = {J. Lages and D. L. Shepelyansky},
  journal= {arXiv preprint arXiv:1211.0903},
  year   = {2013}
}

Comments

Accepted in MNRAS Letters, 5 pages, 5 figures

R2 v1 2026-06-21T22:33:03.356Z