Solar wind energy transfer regions inside the dayside magnetopause. I - Evidence for magnetosheath plasma penetration

Details Solar wind energy transfer regions inside the dayside magnetopause. I - Evidence for magnetosheath plasma penetration Solar wind energy transfer regions inside the dayside magnetopause. I - Evidence for magnetosheath plasma penetration

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984p%26ss...32..745l&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 32, June 1984, p. 745-755. Research supported by the Swedish Board for Space

Computer Science

47

Energy Transfer, Magnetopause, Magnetosheath, Solar Terrestrial Interactions, Solar Wind, Space Plasmas, Daytime, Electric Fields, Geomagnetism, Magnetohydrodynamics, Polar Regions, Prognoz Satellites

Scientific paper

The magnetosheath plasma penetration of the dayside magnetopause to form high density, high-beta, magnetosheath-like regions inside the magnetopause may play an important role in transferring solar wind energy into the magnetosphere. The transfer regions are characterized by a strong perpendicular flow toward dawn or dusk, but are also observed to expand rapidly along the boundary layer field lines. This increased flow component corresponds to a predominantly radial electric field, indicating that the injected magnetosheath plasma causes an enhanced polarization of the boundary layer. This polarization may be considered to be due to a local MHD process in which magnetosheath plasma excess momentum is converted into electromagnetic energy. It is noted that the boundary layer is charged up to tens of kV, a potential which may be highly variable.

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