Other
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsm21a0335l&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #SM21A-0335
Other
2483 Wave/Particle Interactions (7867), 2720 Energetic Particles: Trapped, 2730 Magnetosphere: Inner, 2774 Radiation Belts
Scientific paper
There has been increased interest in relativistic electrons in the inner magnetosphere mainly due to the correlation between the occurrence of enhancing relativistic electron flux and spacecraft operation anomalies or even failures [e.g., Baker et al, 1994]. However, the dominant processes which accelerate magnetospheric electrons to MeV energies are not well understood. Many recent observations suggested that enhancement of energetic electrons are closely associated with ULF waves in Pc4 (7-22 mHz) or Pc5 (1-7 mHz) frequency ranges. Our goal is to examine the electron drift-resonance interaction with Pc5 ULF waves during magnetic storm time. Here, we will show the results of observations from ground based magnetometers, Polar spacecraft, LANL Geosynchronous satellites and the CRRES Medium Energy A (MEA) spectrometer. We observed very strong Pc5 oscillations during the great magnetic storm of March 24, 1991 [ Lee et al., 2007] and electron flux simultaneously oscillating with the same frequencies in the time domain. We also characterized a number of other events and present an examination of the relationship between the electron flux modulation and Pc5 ULF pulsations.
Lee Edward
Mann Ian R.
Ozeke L. G.
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