Can Cusp-Originated Relativistic Electrons be Identified in the Radiation Belt?

Details Can Cusp-Originated Relativistic Electrons be Identified in the Radiation Belt? Can Cusp-Originated Relativistic Electrons be Identified in the Radiation Belt?

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm42b0837t&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SM42B-0837

Other

2716 Energetic Particles, Precipitating, 2720 Energetic Particles, Trapped, 2724 Magnetopause, Cusp, And Boundary Layers, 2730 Magnetosphere: Inner, 2799 General Or Miscellaneous

Scientific paper

The discovery of cusp trapping of energetic particles [Chen et al., 1997; Sheldon et al., 1998] has raised an interesting question whether the radiation belt can be filled with cusp-originated relativistic electrons (COREs). After analyzing the propagation of COREs in the magnetosphere we have found that these particles are a potential source of relativistic electrons in the radiation belt. Because of the presence of magnetic field minimum in the outer cusp, a sharp pancake-like pitch-angle distribution should be the salient characteristic to distinguish COREs from other electron sources. From the CRRES-MEA electron data we have collected the impulsive electron flux enhancement events to look for CORE signature. The characteristics of these events are described. Chen J., et al., A new temporarily confined population in the polar cap during the August 27, 1996 geomagnetic field distortion period, Geophys. Res. Lett., 24, 1447, 1997. Sheldon, R. B., et al., The discovery of trapped energetic electrons in the outer cusp, Geophys. Rev. Lett., 25, 1825, 1998.

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