Physics
Scientific paper
Jan 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984georl..11....8a&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 11, Jan. 1984, p. 8-11.
Physics
15
Deceleration, Magnetopause, Plasma Acceleration, Space Plasmas, Electron Plasma, Flow Velocity, Magnetic Field Configurations, Magnetosheath
Scientific paper
This letter presents a detailed experimental analysis of the electric fields and electron flow velocities at a rotational magnetopause discontinuity. It is shown for this event that the magnetosheath plasma velocity is sharply decelerated on entry into the magnetosphere in very good agreement with a theoretical magnetohydrodynamic fit. This type of event is remarkable because the product of the electric-field vector and the Chapman-Ferraro magnetopause current is negative during the magnetopause crossing. This case represents one of two types of valid solution to the MHD boundary conditions. It differs from previously published examples of reconnective magnetopause geometries in that energy is being transferred locally from kinetic energy into electromagnetic energy at the time of these measurements.
Aggson Thomas L.
Gambardella P. J.
Maynard Nelson C.
Ogilvie Keith. W.
Scudder Jack D.
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