HR: 0800h
AN: SM21A-0321    [Abstracts]
TI: Whistlers observed outside the plasmasphere: Correlation to plasmaspheric/plasmapause features and implications for the scattering of radiation-belt electrons
AU: * Adrian, M L
EM: Mark.L.Adrian@nasa.gov
AF: NASA/Goddard Space Flight Center, Laboratory for Geospace Physics, Code 673 8800 Greenbelt Road, Greenbelt, MD 20771, United States
AU: Gallagher, D L
EM: Dennis.L.Gallagher@nasa.gov
AF: NASA/Marshall Space Flight Center, National Space Science & Technology Center, Mail Code VP62 320 Sparkman Drive, Huntsville, AL 35805, United States
AB: Magnetospherically reflected, lightning-generated whistler waves are an important potential contributor to pitch- angle scattering loss processes of the electron radiation belts. While lightning-generated whistlers are a common feature at, and just inside, the plasmapause, they are infrequently observed outside the plasmasphere. As such, their potential contribution to outer radiation belt loss processes is more tenuous. Recently, Platino et al. [2005] has reported on whistlers observed outside the plasmasphere by Cluster. Here, we present correlative global observations of the plasmasphere, for the reported periods of Cluster-observed whistlers outside the plasmasphere, using IMAGE-EUV data. The intent of this study is to seek the underlying mechanisms that result in whistlers outside the plasmasphere and consequently the anticipated morphology and significance these waves may have on radiation belt dynamics.
DE: 2716 Energetic particles: precipitating
DE: 2730 Magnetosphere: inner
DE: 2768 Plasmasphere
DE: 2772 Plasma waves and instabilities (2471)
SC: SPA-Magnetospheric Physics [SM]
MN: 2007 Fall Meeting