Gravitational perturbation of homogeneous collisionless dark matter

Details Gravitational perturbation of homogeneous collisionless dark matter Gravitational perturbation of homogeneous collisionless dark matter

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985japa....6..247p&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 6, Dec. 1985, p. 247-260.

Astronomy and Astrophysics

Astrophysics

Galactic Clusters, Gravitational Effects, Missing Mass (Astrophysics), Universe, Big Bang Cosmology, Galactic Rotation, Neutrinos, Perturbation Theory, Steady State

Scientific paper

The effect of a perturbing mass on a homogeneous collisionless cloud of dark matter is considered in the linear approximation. It is shown that the gravitational potential can have turning points, in sharp contrast with gravitating systems of finite extent. The model offers a reasonable explanation for the observed secondary maxima in the density distribution of rich clusters. The relevance of the model to the flatness of the rotation curves of galaxies is also discussed.

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