Other
Scientific paper
Jan 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....95...61s&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Jan. 1, 1990, p. 61-73. Research sponsored by DOE.
Other
18
Geomagnetic Tail, Magnetic Field Configurations, Magnetohydrodynamics, Discontinuity, Magnetospheric Ion Density, Rotating Plasmas
Scientific paper
This paper gives the first explicit test of the rotational discontinuity-slow expansion fan structure predicted by MHD models of the open tail boundary. The magnetic field and plasma data collected by IMP 8 during its magnetotail boundary crossings at geocentric distances near 25 Re and high latitudes are analyzed. Many crossings show the particle and field signatures of the paired MHD tail boundary structure. The openness of the tail is revealed by rotational discontinuities. They often show relatively large normal magnetic field components. Other crossings show properties that suggest a tangential discontinuity and reveal regions where, or times when, the tail is closed. Examples of each are given here.
Gosling Jack T.
Hones Edward W. Jr.
Lepping Ronald P.
Sanchez Ennio R.
Siscoe George L.
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