12-20 July 2017
BEXCO
Asia/Seoul timezone
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Contribution

BEXCO - Room F(201/202/203/204)

[SH088] Dynamics of high-energy electron flux in the outer radiation belt in disturbed magnetosphere of the Earth

Speakers

  • Sergey KOLDASHOV

Primary authors

  • Sergey KOLDASHOV (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Russia)

Co-authors

  • Sergey ALEKSANDRIN (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Russia)
  • Nadezhda EREMINA (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Russia)

Description

The results of observation of large variations of high-energy electron flux in the outer radiation belt, obtained in ARINA satellite experiment, are presented. Scintillation telescope-spectrometer ARINA on board the Russian satellite Resurs-DK1 (2006 - 2016) has been developed in MEPhI. This instrument carried out continuous measurements of high-energy electron flux and its energy spectrum in low-Earth orbit in the range of 3-30 MeV with 10 % energy resolution. A time profile of electron flux in the outer radiation belt has been studied. Detail analysis of experimental data on ultra relativistic (4-6 MeV) electrons in this zone (L~3 – 7) was fulfilled for different L-shells. It was shown a strong variability of flux of such electrons practically in all L-range of outer radiation belt. The sharp effects in electron flux (as rise and as drop) in disturbed magnetosphere, interrelated with solar flares and coronal mass ejections, have been considered in this work. It was noticed that the relative scale of these changes reached the value of the order of several hundred times.