Solar proton increases and dynamics of the electron outer radiation belt during solar events in December 2006

Details Solar proton increases and dynamics of the electron outer radiation belt during solar events in December 2006 Solar proton increases and dynamics of the electron outer radiation belt during solar events in December 2006

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ge%26ae..48..719t&link_type=abstract

Geomagnetism and Aeronomy, Volume 48, Issue 6, pp.719-726

Computer Science

1

93.30.Xy, 94.30.Lr

Scientific paper

Increases in solar protons and variations in the electron and proton fluxes from the outer radiation belt are studied based on the GLONASS satellite measurements (the circular orbit at an altitude of ˜20000 km with an inclination of ˜65°) performed in December 2006. Indications in the channels, registered protons with energies of Ep = 3-70 MeV and electrons with energies of Ee > 0.04 and >0.8 MeV, are analyzed. The data on electrons with Ee = 0.8-1.2 MeV, measured on the Express-A3 geostationary satellite, are also presented. Before the strong magnetic storm of December 14 (| Dst|max = 146 nT), the maximum of the outer belt electrons with the energy >0.7 MeV was observed at L ˜ 4.5. After the storm, the fluxes of these electrons increased by more than an order of magnitude as compared to the prestorm level, and the maximum of a “new” belt shifted to L < 4 (minimal L reached by the GLONASS orbit). Under quiet geomagnetic conditions, solar protons with the energies >3 MeV fill only high-latitude legs of the GLONASS orbit. During the strong magnetic storm of December 15, the boundary of proton penetration into the magnetosphere almost merged with the orbital maximum of the proton radiation belt.

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