National Aeronautics and Space Administration

Living With A Star

Targeted Research and Technology

Relativistic Electron Acceleration and Transport: CRRES and SCATHA Observations in the Inner Magnetosphere

ROSES ID: NNH05ZDA001N      Selection Year: 2006      

Program Element: Independent Investigation

Principal Investigator: James Roeder

Project Member(s):
chen, yue Co-I Los Alamos National Laboratory
O'Brien, Thomas Paul Co-I The Aerospace Corporation
Thorne, Richard M Co-I UCLA
Fennell, Joseph F. Co-I Aerospace Corp.
Friedel, Reiner H.W. Collaborator Los Alamos National Laboratory


Observations by the NASA/USAF SCATHA and CRRES satellite missions will be used to test candidate mechanisms for the acceleration and transport of radiation belt electrons in the energy range 0.05-6 MeV. Radial profiles of the measured energetic electron phase space density will be constructed at constant first and second adiabatic invariants. The profiles at a range of values for the second invariant, from near zero to large values, will help determine whether local wave particle interactions actively contribute to the electron acceleration. Electron and wave data from SCATHA and CRRES will also be used to test diffusion models of the wave-particle interactions in pitch angle and energy. The effect of magnetic and electric shell splitting will be investigated by examining the local time asymmetries of SCATHA and CRRES electron observations of in comparison with other available satellites.


Performance YearReferenceActions
1Roeder, J. L.; Fennell, J.; (2010), Statistical models o...
1Claudepierre, S. G.; Roeder, J. L.; Blake, J. B.; F...

Export to PDF