Solar Extreme Events of 2003:
Fundamental Science and Applied Aspects

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HEO and CORONAS-F Electron and Proton Radiation Belt Data Comparison
Crosby N.B., Kuznetsov S.N., Fennell J.F., Heynderickx D., Myagkova I.N., Yushkov B.Yu.,

World-wide attention was focussed on the October and November 2003 solar events due to the majestic nature of both the solar flares and the coronal mass ejections that were involved. These events especially caused technical problems for various spacecraft in geostationary orbit due to the fact that very large enhancements of energetic particles in the Earth's radiation belts occurred as an aftermath of the solar disturbances. To better understand how these solar events influenced the radiation belts it is important to compare radiation belt observations performed at different energies and locations in space. Here we present a comparison between observations performed by the HEO 1997-068 (HEO-3) spacecraft that has a highly elliptical orbit with an ~67 inclination and the CORONAS-F satellite with a circular high inclination (~83 ) orbit with an altitude of 500 km. The HEO and CORONAS-F spacecraft provide both electron and proton radiation belt data in comparable energy ranges. Solar wind parameters and geomagnetic indices are also used in this study.

Skobeltsyn Institute of Nuclear Physics, Moscow State University, 2004