The universe as a 'non-ideal' gas of galaxies

Details The universe as a 'non-ideal' gas of galaxies The universe as a 'non-ideal' gas of galaxies

Mar 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...204l..59y&link_type=abstract

Astrophysical Journal, vol. 204, Mar. 1, 1976, pt. 2, p. L59-L62. Research supported by the U.S.-Israel Binational Science Foun

Physics

Condensed Matter

Statistical Mechanics

10

Bbgky Hierarchy, Galactic Clusters, Spatial Distribution, Statistical Mechanics, Universe, Big Bang Cosmology, Cosmology, Galaxies, Kinetic Energy, Thermal Expansion, Velocity Distribution

Scientific paper

The dynamics of correlations among mass-points in an expanding universe is studied using the BBGKY (Bogolybov, Born, Green, Kirkwood, Yvon) equations. It is shown that the observed spatial correlation function of galaxies, as determined by Peebles and his collaborators (1974), requires that the correlation energy of galaxies be comparable to or greater than their random kinetic energy.

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