Some properties of a steady-state geomagnetic tail

Details Some properties of a steady-state geomagnetic tail Some properties of a steady-state geomagnetic tail

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980georl...7..833c&link_type=abstract

Geophysical Research Letters, vol. 7, Oct. 1980, p. 833-836.

Physics

2

Earth Mantle, Geomagnetic Tail, Plasma Currents, Plasma Equilibrium, High Temperature Plasmas, Neutral Sheets, Pressure Gradients, Steady State

Scientific paper

The equilibrium conditions on distended reconnected field lines in the distant geomagnetic tail are investigated on the assumption that the field line tension is balanced by tail lobe 'mantle' plasma convecting into the central current sheet. Subject to steady reconnection at a neutral line being possible at some point in the tail, it is shown that steady solutions can be obtained for arbitrary downtail variations of mantle influx. Results are presented for a simple but physically plausible model in which the mantle density and bulk speed at the current sheet increase steadily downtail. Acceleration of lobe plasma in the current sheet is also discussed, and the consequent structure of the hot plasma regions downstream from the neutral line.

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