Fragmentation of a primordial flat layer, and the formation of internal cluster structure

Details Fragmentation of a primordial flat layer, and the formation of internal cluster structure Fragmentation of a primordial flat layer, and the formation of internal cluster structure

Apr 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980azh....57..259d&link_type=abstract

(Astronomicheskii Zhurnal, vol. 57, Mar.-Apr. 1980, p. 259-267.) Soviet Astronomy, vol. 24, Mar.-Apr. 1980, p. 152-157. Transla

Astronomy and Astrophysics

Astronomy

9

Cosmic Plasma, Cosmology, Galactic Evolution, Gravitational Effects, Magnetohydrodynamic Stability, Adiabatic Conditions, Galactic Structure, Shear Flow

Scientific paper

A discussion is given of gravitational and hydrodynamic instability in a plane layer of matter that can be compressed by external pressure. The dependence of the instability growth rate on the boundary conditions and on shear flows of the material in the layer is established. Estimates are obtained for the parameters and the fragmentation rate of the thin, cool layer which, according to the nonlinear adiabatic theory of gravitational instability, should develop in the central part of the primordial 'pancake'.

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