Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....84...14n&link_type=abstract
Astronomy and Astrophysics, vol. 84, no. 1-2, Apr. 1980, p. 14-22. Research supported by the Nederlandse Organisatie voor Zuive
Astronomy and Astrophysics
Astronomy
15
Binary Stars, Kelvin-Helmholtz Instability, Magnetohydrodynamic Flow, Radio Sources (Astronomy), Shear Layers, Compressible Flow, Gas Dynamics, Shear Flow, Velocity Distribution
Scientific paper
Two-dimensional computations on shear flow with different plasma betas and magnetic fields are performed. The shocks that emerge are interpreted as corrugation effects. It is argued that beams ('low density') are unstable if and only if clouds ('high density') are unstable and that beams are more easily destroyed than clouds. It is found that equipartition between thermal and magnetic energy densities is not always reached. Places of high current density are present in the shearing media and possibly constitute a site for particle acceleration. 'Viscous behaviour' of magnetic fields is found and interpreted as giving rise to a disruptive situation for beams.
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