Statistics – Computation
Scientific paper
Dec 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apjs...71..777h&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 71, Dec. 1989, p. 777-798. Research supported by DOE.
Statistics
Computation
14
Computational Astrophysics, Interstellar Matter, Kelvin-Helmholtz Instability, Star Formation, Thermal Instability, Adiabatic Conditions, Hydrogen Clouds, Interstellar Magnetic Fields, Mach Number, Molecular Clouds
Scientific paper
In the vortex-sheet limit a generalized theory is developed which blends the theory of compressible magnetized Kelvin-Holmholtz (KH) instabilities with the classical astrophysical theory of thermal instabilities. Unstable KH modes can grow more rapidly than in their corresponding adiabatic limits, and a fundamental new instability, the thermal-dynamic instability, often dominates over the maximum KH growths at intermediate to large Mach numbers. At typical flow velocities in the ISM, the thermal-dynamic instability may result in the development of structures in molecular clouds near the interfaces between the clouds and H I regions flowing past them.
Hunter James H. Jr.
Whitaker Rodney W.
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