Physics
Scientific paper
Jan 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88..111s&link_type=abstract
Journal of Geophysical Research, vol. 88, Jan. 1, 1983, p. 111-124.
Physics
95
Computerized Simulation, Magnetopause, Particle Trajectories, Rotating Matter, Satellite Observation, Space Plasmas, Discontinuity, Electric Fields, Equations Of Motion, Magnetic Fields, Magnetohydrodynamic Flow
Scientific paper
Symmetric and asymmetric rotational discontinuities are studied by means of a one-dimensional computer simulation and by single-particle trajectory calculations. The numerical simulations show the symmetric rotation to be stable for both ion and electron senses of rotation with a thickness of the order of a few ion gyroradii when the rotation angle of the tangential field is 180 deg or less. Larger rotation angles tend to be unstable. In an expansive discontinuity, when the magnetic field on the downstream side of the discontinuity is larger, an expanding transition layer separating the highfield from a low-field region develops on the downstream side, and a symmetric rotational discontinuity forms at the upstream edge. The implication of these results for magnetopause structure and energy flow through the magnetopause is described.
Lee L. G.
Swift Daniel W.
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