Other
Scientific paper
May 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agusmsm32a..06s&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #SM32A-06
Other
7807 Charged Particle Motion And Acceleration, 2716 Energetic Particles: Precipitating, 2723 Magnetic Reconnection (7526, 7835), 2748 Magnetotail Boundary Layers
Scientific paper
An automated algorithm for detecting Low Energy Ion Cutoffs (LEIC) in the energy spectra of precipitating ion was developed. LEIC are indicative of time-of-flight effects. The occurrence of LEIC spectra was mapped in DMSP observations. There are four distinct components to this map, two of which are produced by reconnection. On the dayside LEIC are seen in cusp, mantle and open-LLBL precipitation, predominantly at sub-keV energies, as the result of dayside reconnection. On the nightside LEIC are seen at the poleward edge of the oval at super-keV energies (usually dispersed with latitude), that indicate magnetotail reconnection. There is another super-keV population seen on the dusk side at the equatorward edge of the oval, possibly indicating the onset of isotropy or possibly due to time-of-flight effects following particle injection. Finally, there is a sub-keV population seen throughout the auroral oval that is thought to consist of ions accelerated out of the opposing hemisphere.
Meng Chun
Newell Patrick
Rich F.
Sotirelis Thomas
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