Large-scale structure in the universe

Details Large-scale structure in the universe Large-scale structure in the universe

Apr 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978amsci..66..176g&link_type=abstract

American Scientist, vol. 66, Mar.-Apr. 1978, p. 176-184.

Astronomy and Astrophysics

Astronomy

Astronomical Models, Big Bang Cosmology, Galactic Clusters, Galactic Evolution, Universe, Galactic Structure, Galaxies, Gravitational Effects

Scientific paper

The mechanism of galactic cluster formation is considered with reference to the formation of the universe itself. Two models for the formation of individual galaxies are proposed, both of them starting with the big bang theory. In the first, turbulent eddies in regions of uniform density cause early gravitational collapse. In the second, there is slow collapse from random regions of statistical density irregularities. The universe as a whole is expanding. Whether it will ever stop its expansion depends on the mass of the universe versus the escape velocity for that mass. Galactic clusters are seen here as having fragmented out of the general cosmic expansion, gravitational forces binding them together. Effects of the cluster environment on the galaxies which compose them are also investigated.

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