HR: 1340h
AN: SM13A-1186    [Abstracts]
TI: A model on the interaction of magnetospheric relativistic electrons with Ultra-Low-Frequency (ULF) Waves
AU: * Shao, X
EM: shao@mail630.gsfc.nasa.gov
AF: NASA/GSFC, Space Physics Data Facility NASA/GSFC, Code 632, Greenbelt, MD 20771 United States
AU: Fung, S
EM: fung@mail630.gsfc.nasa.gov
AF: NASA/GSFC, Space Physics Data Facility NASA/GSFC, Code 632, Greenbelt, MD 20771 United States
AU: Tan, L
EM: ltan@mail630.gsfc.nasa.gov
AF: QSS Group, Inc., QSS Group, INc. NASA/GSFC, Code633, Greenbelt, MD 20771 United States
AB: Recent paper by Tan, Fung and Shao [2004] shows evidences of resonant interaction and acceleration of energectic electrons with PC5 ULF waves (1-10 mHz) by analyzing CRRES and GOES satellites observations for Aug. 27, 1991 event. The event shows energetic electron flux being modulated and enhanced in 2 hours. In this presentation, we present a model of characteristic distributions of toroidal and poloidal waves in the equatorial plane during the event. By tracing particles in the electric field mapped out with CRRES observations using this model, we compared details of energetic electron flux variation to those observed by CRRES. We will also compare efficiencies of acceleration by toroidal wave to those by poloidal wave. Discussions will be given on furtehr implications of the model. Tan, L. C., S. F. Fung, and X. Shao (2004), Observation of magnetospheric relativistic electrons accelerated by Pc-5 ULF waves, Geophys. Rev. Lett., L14802, doi:10.1029/2004GL019459.
DE: 2716 Energetic particles, precipitating
DE: 2730 Magnetosphere--inner
DE: 2752 MHD waves and instabilities
DE: 2753 Numerical modeling
SC: SPA-Magnetospheric Physics [SM]
MN: 2004 AGU Fall Meeting