Antonova Elizaveta E, Stepanova Marina V, Moya Pablo S, Pinto Victor A, Vovchenko Vadim V, Ovchinnikov Ilya L, Sotnikov Nikita V
1Skobeltsyn Institute of Nuclear Physics and Space Research Institute RAS, Lomonosov Moscow State University, Moscow, Russia.
2Departamento de Fisica, Universidad de Santiago de Chile (USACH), Santiago, Chile.
Earth Planets Space. 2018;70(1):127. doi: 10.1186/s40623-018-0898-1. Epub 2018 Aug 8.
We have analyzed the role of auroral processes in the formation of the outer radiation belt, considering that the main part of the auroral oval maps to the outer part of the ring current, instead of the plasma sheet as is commonly postulated. In this approach, the outer ring current is the region where transverse magnetospheric currents close inside the magnetosphere. Specifically, we analyzed the role of magnetospheric substorms in the appearance of relativistic electrons in the outer radiation belt. We present experimental evidence that the presence of substorms during a geomagnetic storm recovery phase is, in fact, very important for the appearance of a new radiation belt during this phase. We discuss the possible role of adiabatic acceleration of relativistic electrons during storm recovery phase and show that this mechanism may accelerate the relativistic electrons by more than one order of magnitude.
我们分析了极光过程在外部辐射带形成中的作用，考虑到极光卵的主要部分映射到环电流的外部，而不是如通常假设的那样映射到等离子体片。在这种方法中，外部环电流是磁层横向电流在磁层内部闭合的区域。具体而言，我们分析了磁层亚暴在外部辐射带相对论电子出现过程中的作用。我们提供了实验证据，表明在地磁风暴恢复阶段期间亚暴的存在实际上对于该阶段新辐射带的出现非常重要。我们讨论了风暴恢复阶段相对论电子绝热加速的可能作用，并表明这种机制可能使相对论电子加速超过一个数量级。
