Processes in auroral oval and outer electron radiation belt

被引：11
|
作者：
Antonova, Elizaveta E. [1 ,2 ]
Stepanova, Marina V. [3 ]
Moya, Pablo S. [4 ]
Pinto, Victor A. [5 ]
Vovchenko, Vadim V. [6 ]
Ovchinnikov, Ilya L. [1 ]
Sotnikov, Nikita V. [1 ]
机构：
[1] Lomonosov Moscow State Univ, Skobeltsyn Inst Nucl Phys, Moscow, Russia
[2] Lomonosov Moscow State Univ, Space Res Inst RAS, Moscow, Russia
[3] Univ Santiago Chile USACH, Dept Fis, Santiago, Chile
[4] Univ Chile, Fac Ciencias, Dept Fis, Santiago, Chile
[5] Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA USA
[6] Space Res Inst RAS, Moscow, Russia
来源：
EARTH PLANETS AND SPACE | 2018年 / 70卷
基金：
俄罗斯基础研究基金会;
关键词：
Magnetospheric storm and substorm; Auroral oval; Acceleration of electrons of the outer electron radiation belt; VAN ALLEN PROBES; RELATIVISTIC ELECTRONS; INNER MAGNETOSPHERE; CHORUS WAVES; ACCELERATION; STORM; PARTICLE; SATELLITE; BOUNDARY; DYNAMICS;
D O I：
10.1186/s40623-018-0898-1
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
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.
引用
收藏
页数：11
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