Physics
Scientific paper
Sep 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9615767h&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 96, Sept. 1, 1991, p. 15,767-15,778.
Physics
29
Discontinuity, Magnetohydrodynamics, Rotating Fluids, Two Fluid Models, Viscous Fluids, Computerized Simulation, Electron Energy, Hall Effect, Larmor Radius, Magnetic Field Configurations, Magnetic Field Reconnection, Solar Terrestrial Interactions
Scientific paper
A nondissipative gyroviscous two-fluid model in which electron inertia is neglected is used to construct 1D steady-state equilibrium structures of rotational discontinuities (RDs). The gyroviscous terms in the pressure tensor, due to first-order finite ion Larmor radius effects, are included, but the plasma pressure is assumed to be isotropic. The analysis shows that in the ByBz plane the magnetic structure near the fixed point is either a center or a saddle point. For those upstream conditions that give rise to a center point, no RD structure exists; when the fixed point examined is a saddle point, numerical integration of the 1D, steady-state nonlinear gyroviscous two-fluid equations indicates that self-consistent complete RD structures sometimes exist.
Hau Lin-Ni
Sonnerup Bengt U. Ö.
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