Mathematics – Logic
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsh51b..04f&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #SH51B-04
Mathematics
Logic
2116 Energetic Particles, Planetary, 2724 Magnetopause, Cusp, And Boundary Layers, 2784 Solar Wind/Magnetosphere Interactions
Scientific paper
The present debate about the source of upstream particles has traditionally centered on the role of the bow shock versus leakage from the magnetosphere as the source for providing the energetic (> 20 keV) component of these upstream particles. With the advent of the Polar and Cluster satellite programs with their modern mass and charge state compositional capabilities, a third possibility has been established. The Polar satellite has discovered that the shocked solar wind plasma enters the weak field region of the polar cusps and produces diamagnetic cavities of tremendous size within the traditional magnetosphere. Within these cavities the local magnetic field is greatly depressed and turbulent and usually carries the remnant signature of the upstream interplanetary magnetic field (IMF) in the two transverse components, By and Bz. Measurements, which demonstrate that ions of recent solar wind origin that have been energized to energies associated with the Earth's ring current, are observed inside these cavities will be presented and discussed. On occasions there are also ions of ionospheric origin that appear to be energized at the same time showing the same spectral and time variations as those ions originating in the solar wind. The Cluster suite of satellites has observed a layer of energetic particles to be continually present at the high latitude magnetopause but these particles are seen upstream more infrequently. Logically the condition for the energetic particles to be seen upstream from this cusp-associated source is the same IMF orientation as that ascribed to the quasi-parallel bow shock. Results of an ongoing study of the correlation of ions upstream of the magnetopause with magnetic field orientation and energetic particle streaming direction will be presented.
No associations
LandOfFree
Evidence for a Cusp Source of Upstream Energetic Particles does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Evidence for a Cusp Source of Upstream Energetic Particles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evidence for a Cusp Source of Upstream Energetic Particles will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1436339