TSUBASA (MDS-1) observations of energetic electrons and magnetic field variations in outer radiation belt

Details TSUBASA (MDS-1) observations of energetic electrons and magnetic field variations in outer radiation belt TSUBASA (MDS-1) observations of energetic electrons and magnetic field variations in outer radiation belt

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsm51a0518n&link_type=abstract

American Geophysical Union, Fall Meeting 2002, abstract #SM51A-0518

Physics

2720 Energetic Particles, Trapped, 2730 Magnetosphere: Inner, 2788 Storms And Substorms

Scientific paper

We have investigated variations of energetic electrons (> 0.4 MeV) and magnetic field in the radiation belt obtained from the Standard DOse Monitor (SDOM) and the MAgnetoMeter (MAM) of the Space Environment Data Acquisition equipment (SEDA) onboard TSUBASA (the Mission Demonstration Test Satellite (MDS)-1) launched on February 4, 2002. Since TSUBASA is operated in the geostationary transfer orbit, it has provided rare opportunities of directly observing near-equatorial radiation belt plasma particles and magnetic field, having already included several large magnetic storms. The energetic electrons in the outer radiation belt are contributors to the total radiation dose deposited in lightly shielded spacecraft electronics for high altitude orbits and are known to have a drastic variability associated with geomagnetic storm and high speed solar wind streams. The abrupt energetic electron flux decreases in the outside of outer radiation belt show characteristic variations of in situ magnetic field. These observations have implications for the possible mechanisms of the depletion and the following recovery and/or buildup of energetic electrons in the outer radiation belt.

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