First polar and 1995-034 observations of the midaltitude cusp during a persistent northward IMF condition

Details First polar and 1995-034 observations of the midaltitude cusp during a persistent northward IMF condition First polar and 1995-034 observations of the midaltitude cusp during a persistent northward IMF condition

Jun 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997georl..24.1475g&link_type=abstract

Geophysical Research Letters, Volume 24, Issue 12, p. 1475-1478

Physics

13

Magnetospheric Physics: Magnetopause, Cusp, And Boundary Layers, Magnetospheric Physics: Magnetospheric Configuration And Dynamics, Magnetospheric Physics: Solar Wind/Magnetosphere Interactions

Scientific paper

We present the first observations by Polar and 1995-034 of the mid-altitude cusp. On May 29, 1996, the Polar and 1995-034 spacecraft crossed into an extended cusp region. The region was characterized by intense fluxes of solar wind like ions in the energy range 1-10 keV that had angular distributions that showed evidence of flows and trapping. The ion composition data are combined with energetic proton observations from Polar and plasma observations from 1995-034 and DMSP satellites to examine the spatial and temporal extent and plasma characteristics of the cusp during a persistent northward IMF condition. The composition data is consistent with expected solar wind composition with a source temperature of ~1.25×106K. The combined spacecraft observations show an extended cusp-like region, probably produced by northward IMF.

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