Physics
Scientific paper
Jun 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997kosis..35..253p&link_type=abstract
Kosmicheskie Issledovaniia, Tom 35, No. 3, p. 253 - 262
Physics
2
Magnetohydrodynamics: Jets, Magnetohydrodynamics: Earth Magnetosphere
Scientific paper
Three-dimensional numerical MHD simulation of a sub-Alfvenic plasma jet in transversal magnetic field has shown that an influence of field line accumulation in front of the jet is not considerable. The jet moves magnetic field lines apart. This effect of magnetic field decrease inside the jet is absent in the case of two-dimensional approximation. Longitudinal (field-aligned) currents generated by the jet determine basic perturbations of the magnetic field. Two layers of oppositely directed currents bound a region of considerable distortion. The longitudinal currents are transported along the field by an Alfvenic wave. An energy lost by the jet and by the confined plasmoid may be transferred to ambient plasma and a field of Alfvenic waves. Two oppositely directed velocity vortexes appear in a plane perpendicular to the jet velocity and the initial magnetic field. The vortexes are created if the longitudinal current appeared owing to a winding up of magnetic field lines.
Podgornyj A. I.
Podgornyj I. M.
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