The slot region between the radiation belts in the magnetosphere is statistically less populated by the energetic electrons, which makes it attractive in the design considerations of the satellite missions. As has been shown in the last decades, the dynamics of this region is complicated, with strong enhancements of electron density associated with space weather events. This paper provides an analysis of the dynamics of electron flux in 1998–2007 with specific attention to slot filling events and preceding geomagnetic activity. Flux of energetic electrons, with energies E > 0.63 MeV, E > 1.5 MeV, and E > 3 MeV, was obtained from detectors on board the HEO‐3 satellite in highly elliptical orbit. To evaluate geomagnetic conditions, associated with enhancement of electron flux, all the “slot filling events” were studied together with geomagnetic activity provided by Dst and Kp global indices as well as with the hourly range indices of geomagnetic variations at mid‐latitude. These geomagnetic indices were used for assessment of a threshold and frequency of occurrence of slot filling events. Regression analysis has been used to find a relationship between the maximum filling of the slot region due to space weather event and the preceding geomagnetic activity level. Influence of the cumulative time of periods of enhanced geomagnetic activity to the variation of the electron flux in the slot region has been analyzed. Suitability of different indices of geomagnetic activity for estimation of the rate of occurrence of slot filling events and for assessment of electron flux in the slot region is discussed.

中文翻译：

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缝隙区域电子通量的动力学和地磁活动

在统计上，高能电子在磁层辐射带之间的缝隙区域分布较少，这使其在卫星飞行任务的设计考虑中具有吸引力。如最近几十年所显示的，该区域的动力学非常复杂，与空间天气事件相关的电子密度大大增强。本文提供了1998-2007年电子通量的动态分析，特别关注了缝隙填充事件和先前的地磁活动。能量E  > 0.63 MeV，E  > 1.5 MeV和E的高能电子通量 > 3 MeV，是从高度椭圆轨道上的HEO-3卫星上的探测器获得的。为了评估与电子通量增强相关的地磁条件，研究了所有“缝隙填充事件”，以及Dst和Kp全球指数提供的地磁活动以及中纬度地磁变化的小时范围指数。这些地磁指数用于评估缝隙填充事件发生的阈值和频率。回归分析已用于查找由于空间天气事件导致的缝隙区域的最大填充量与先前的地磁活动水平之间的关系。分析了地磁活动增强周期的累积时间对缝隙区域电子通量变化的影响。