Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...326..616e&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 326, March 15, 1988, p. 616-638.
Astronomy and Astrophysics
Astrophysics
46
Density Wave Model, Interstellar Gas, Interstellar Magnetic Fields, Molecular Clouds, Wave Fronts, Conservation Equations, Lines Of Force, Magnetic Flux, Star Formation
Scientific paper
Collisional and magnetic interactions between clouds in moving pressure fronts are investigated. The interstellar magnetic field is assumed to randomize the incident cloud streaming motions. Conservation equations for mass, momentum, magnetic flux, and energy are derived. The equations include the usual terms for kinematic, turbulent and magnetic pressures and energy densities, and they also consider self-gravitiy, magnetic diffusion, and energy dissipation from clump-clump collisions and Alfvén waves. The equations are solved as a function of time for three examples of cloud-cloud collision fronts: (1) diffuse cloud collisions in spiral density waves, pressure-driven shells, and small cloud complexes, (2) clump collisions in molecular clouds, and (3) molecular cloud collisions in spiral density waves.
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