Sheared-pancake instability and protocluster fragmentation

Details Sheared-pancake instability and protocluster fragmentation Sheared-pancake instability and protocluster fragmentation

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984pazh...10..820k&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 10, Nov. 1984, p. 820-826) Soviet Astronomy Letters (ISSN 0360-0327), vol. 10, Nov.-Dec

Astronomy and Astrophysics

Astronomy

Cosmic Gases, Cosmology, Gas Dynamics, Gravitational Effects, Flow Stability, Fragmentation, Galactic Evolution, Supersonic Flow, Wave Reflection

Scientific paper

The dynamics of the flattened extended gas layers with a steep transverse shear-velocity gradient that should develop through gravitational instability during the nonlinear phase of an expanding universe is investigated. Hydrodynamic instability will cause these pancake structures to fragment, creating a favorable environment for galaxy formation. The case of supersonic-flow instability is discussed.

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