Collisionless matter and galaxy formation

Details Collisionless matter and galaxy formation Collisionless matter and galaxy formation

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983entr........48c&link_type=abstract

Energy and Technology Review, March 1983, p. 48-61.

Physics

Astronomical Models, Big Bang Cosmology, Galactic Evolution, Gravitational Fields, Matter (Physics), Compact Galaxies, Dark Matter, Galactic Clusters, Hydrodynamics, Mass Distribution, Neutrinos, Universe

Scientific paper

The hypothesis that neutrinos of nonzero rest mass may be responsible for the coalescence of matter into galaxies, galactic clusters, and galactic superclusters is examined using numerical experiments. Three-dimensional simulations of the gravitational clumping of the dark or invisible matter are presented which are highly suggestive of the observed distributions of galaxies in superclusters. One-dimensional calculations performed to model the gravitational interaction of visible matter with invisible matter are less encouraging. The visible matter tends to be overheated as it falls into the gravitational potentials of the unseen matter, and subsequent condensation of the visible matter into compact galaxies with stars appears difficult if not impossible. Three-dimensional calculations with full interactions of visible and invisible matter may be required to establish the feasibility of the dark matter hypothesis of galaxy formation.

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