# Spatial and temporal variations of high-energy electron flux in the outer radiation belt

## TL;DR

This study analyzes short-term variations of high-energy electron flux in the outer radiation belt using satellite data from 2006 to 2016, highlighting flux variability linked to geomagnetic storms caused by solar activity.

## Contribution

It provides detailed observations of high-energy electron flux variations in the outer radiation belt over a decade, utilizing data from the ARINA satellite experiment.

## Key findings

- Large variability in high-energy electron flux observed.
- Flux changes are related to geomagnetic storms.
- Sharp flux increases and decreases linked to solar events.

## Abstract

The results of observation of short-term variations of high-energy electron flux in the outer radiation belt, obtained in ARINA satellite experiment (2006 - 2016), are presented. Scintillation spectrometer ARINA on board the Resurs-DK1 Russian satellite has been developed in MEPhI. The instrument carried out continuous measurements of high-energy electron flux and its energy spectrum in low-Earth orbits in the range 3-30 MeV with 10 15% energy resolution. A time profile of electron flux at different L - shells has been studied in detail on the example of March 2012, and analysis of experimental data on high-energy (4-6 MeV) electrons in the outer radiation belt zone (L~3-7) was fulfilled. It was shown a large variability of flux of such electrons there. The sharp effects in electron flux (as rise and as fall) in magnetosphere interrelated with geomagnetic storms caused by solar flares and coronal mass ejections have been observed.