Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.264..729j&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Vol. 264, NO. 3/OCT1, P. 729, 1993
Astronomy and Astrophysics
Astronomy
7
Gravitation - Hydrodynamics - Instabilities - Relativity - Large-Scale Structure Of Universe
Scientific paper
After some 90 years of effort, the phenomenon of gravitational instability elucidated by Jeans continues to attract much attention and to reveal an unexpected richness of structure. A unified and simplified treatment of recent development in this area is presented, and extended to give new, completely general, exact second-order acoustic propagation equations, governing the evolution of the comoving fractional spatial gradient of the density. Newtonian theory and general relativity are considered, and the unity of the two points of view is emphasized. The Einstein static universe and expanding homogeneous isotropic cosmological models are re-examined.
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