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Key problems of the formation of the outer radiation belt: Adiabatic effect and stochastic acceleratioтезисы доклада
- Авторы: Antonova Elizaveta E., Sotnikov Nikita V., Kirpichev Igor P., Riazantseva Maria O., Stepanova Marina V., Pinto Victor, Espinoza Cristobal M., Vorobjev Vyacheslav G., Yagodkina Oksana I., Ovchinnikov Ilya L., Naiko Daniil Yu, Pulinet Maria S.
- Сборник: XIV школа-конференция с международным участием «Проблемы Геокосмоса-2022» 3-7 октября 2022
- Тезисы
- Год издания: 2022
- Место издания: Санкт Петербургский госуниверситет г. Санкт-петебург
- Номер статьи: GC2022-STP023
- Аннотация: The problem of the formation of the outer radiation belt continues to be one of the main unsolved problemsof the physics of the Earth’s magnetosphere. We summarize the latest results of the study of the outerradiation belt (ORB) using the Van Allen Probes and Themis data, and identify the key problems present inthe traditional approaches, namely: There is an inconsistency between the times provided by the popular“quasilinear” approach to the ORB description and the observed electron acceleration times. It is impossibleto describe ORB dynamics during magnetosheric storms using “quasilinear” approach when the particlefluxes after storm restore to its pre-storm values, i.e. belong to the storms of the third type according toReeves et al. (2003, doi:10.1029/2002GL016513) classification. These approaches also do not explain theTverskaya’s relation which connects the position of the maximum of the relativistic flux formed after stormwith the minimum value of the Dst/SYM-H variation, as well as the acceleration of relativistic electronsduring magnetospheric substorms even in absence of storms. We discuss the alternative approach to theORB formation based on the analysis of the properties of the storm time ring current, the development ofsubstorms at low latitudes during storms, and the action of the adiabatic mechanism of electron acceleration,showing that the problem of the appearance of ORB electrons known as “satellite killers” might beconnected to the large-scale magnetospheric dynamics.
- Добавил в систему: Антонова Елизавета Евгеньевна