Mathematics – Probability
Scientific paper
May 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agusmsm23c..01o&link_type=abstract
American Geophysical Union, Spring Meeting 2005, abstract #SM23C-01
Mathematics
Probability
2716 Energetic Particles, Precipitating, 2720 Energetic Particles, Trapped, 2730 Magnetosphere: Inner, 2764 Plasma Sheet, 2768 Plasmasphere
Scientific paper
We examine electron precipitation bands: spikes of energetic electron precipitation extending over 1/3-L in low altitude observations by SAMPEX and POES. We demonstrate that MeV precipitation bands occur over a wide range of geomagnetic activity and quiescence, with a typical occurrence probability of about 12% over the L range from 5-7 on the night side, with emphasis on the midnight sector. We also demonstrate that though common, bands do not result in a substantial depletion of the trapped MeV electron population. We consider four possible causes for the precipitation: ECH, EMIC, and Chorus waves as well as field-line-curvature scattering. We use the L, MLT, and energy dependence of the bands as well as the simultaneous proton response to evaluate each of these four possible causes.
Green James C.
Looper Mark Dixon
Mazur J. E.
O'Brien P. T. .
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