Self-consistent magnetotail theory - General solution for the quiet tail with vanishing field-aligned currents

Details Self-consistent magnetotail theory - General solution for the quiet tail with vanishing field-aligned currents Self-consistent magnetotail theory - General solution for the quiet tail with vanishing field-aligned currents

Sep 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.5143b&link_type=abstract

Journal of Geophysical Research, vol. 84, Sept. 1, 1979, p. 5143-5152. Research supported by the Deutsche Forschungsgemeinschaf

Physics

9

Electric Current, Field Aligned Currents, Geomagnetic Tail, Magnetic Field Configurations, Cross Sections, Differential Equations, Graphs (Charts), Lines Of Force, Magnetopause, Solar Wind

Scientific paper

The three-dimensional theory of the quiet magnetotail of Birn et al. (1977) is revised and generalized. The general static solution is presented for the case of vanishing field-aligned currents for quiet times with small bulk velocities and negligible pressure anisotropy. Since the knowledge of particle entry, transport, and loss and of the interaction of the magnetosphere with the solar wind is too small to determine the solution by appropriate initial and boundary conditions, the free functions of the general solution have been adjusted to the observational material inside the tail. It is shown that the quiet tail data can be fitted by a self-consistent model without flux loss through the boundary (closed magnetosphere). Restrictions following from self-consistency provide further (indirect) evidence for plasma sheet thickening towards the flanks. The effect of dipole tilt on neutral sheet position and tail aberration can also be included in the model. It turns out that the curvature of the field lines in the x, y plane is connected with the occurence of field-aligned currents.

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