Conditions for the occurrence of intense fluxes of energetic electrons at L<1.2 associated with solar activity and solar wind parameters

Суворова Алла Васильевна; Дмитриев Алексей Владимирович

doi:10.12737/stp-103202409

УДК 52

CONDITIONS FOR THE OCCURRENCE OF INTENSE FLUXES OF ENERGETIC ELECTRONS AT L<1.2 ASSOCIATED WITH SOLAR ACTIVITY AND SOLAR WIND PARAMETERS Conditions for the occurrence of intense fluxes of energetic electrons at L<1.2 associated with solar activity and solar wind parameters

АА Аа

Опубликовано в Solar-Terrestrial Physics · Том 10, Номер 3 · Страницы 75–82 · Рубрика: 19TH ANNUAL CONFERENCE “PLASMA PHYSICS IN THE SOLAR SYSTEM”. FEBRUARY 5–9, 2024, SPACE RESEARCH INSTITUTE RAS, MOSCOW, RUSSIA

DOI: https://doi.org/10.12737/stp-103202409

Получено: 30.04.2024 Одобрено: 17.06.2024 Опубликовано: 29.09.2024 Язык публикаций: RUS

Авторы

СУ

Суворова Алла Васильевна

ДМ

Дмитриев Алексей Владимирович

СУ

Суворова Алла Васильевна

Ученая степень: кандидат физико-математических наук

Научно-исследовательский нститут ядерной физики им. Д.В. Скобельцина МГУ Россия · Москва

ДМ

Дмитриев Алексей Владимирович

Научно-исследовательский институт ядерной физики им. Д.В. Скобельцина МГУ, Москва , Россия Россия · Москва

Факультет космических наук и инженерии, Национальный Центральный Университет, Тайвань Китайская Республика · Тайвань

АННОТАЦИЯ

We present the results of a statistical study of transient enhancements of electrons with energies >30 keV at low drift shells in the quasi-trapped region (forbidden zone) at the geomagnetic equator. Using data from low-altitude NOAA/POES and MetOp satellites, we have compiled a catalog of events with forbidden energetic electron (FEE) enhancements for the period from 1998 to 2023. Statistical analysis of FEE events has revealed solar-cyclic, as well as seasonal and diurnal variations in the occurrence of FEE enhancements. We have examined the correlation of the annual frequency of FEE events with solar activity, solar wind parameters, and geomagnetic activity. Strong correlations have been found with the F10.7 index of solar activity (radio emission flux) as well as with the Alfvén Mach number (solar wind parameter). An interpretation of the obtained results is proposed which is based on the mechanism of electrical drift and radial transport of electrons from Earth’s inner radiation belt to the quasi-trapped region (L<1.2). The key factor for the operation of the mechanism is the effective penetration of the electric field to low latitudes when a significant difference in the conductivity of the high-latitude ionosphere occurs in the illuminated and unilluminated sectors of local time under conditions of weakening auroral activity.

КЛЮЧЕВЫЕ СЛОВА

inner radiation belt, quasi-trapped electrons, solar-terrestrial relationships

Финансирование

The work was carried out under the research theme “Solar research, monitoring, and modeling of the radiation environment and plasma processes in the heliosphere and geospace”

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Жеребцов Гелий Александрович

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Степанов Александр Владимирович

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ГОСТ

Суворова А. В., Дмитриев А. В. Conditions for the occurrence of intense fluxes of energetic electrons at L<1.2 associated with solar activity and solar wind parameters // Solar-Terrestrial Physics. 2024. № 3. С. 75-82. DOI: https://doi.org/10.12737/stp-103202409. (дата обращения: 19.10.2026).

MLA

Суворова Алла Васильевна, Дмитриев А. В.. "Conditions for the occurrence of intense fluxes of energetic electrons at L<1.2 associated with solar activity and solar wind parameters." Solar-Terrestrial Physics 10.3 (2024): 75-82. DOI: https://doi.org/10.12737/stp-103202409.

APA

Суворова А. В., Дмитриев А. В. (2024). Conditions for the occurrence of intense fluxes of energetic electrons at L<1.2 associated with solar activity and solar wind parameters. Solar-Terrestrial Physics, 10(3), 75-82. https://doi.org/10.12737/stp-103202409

Chicago

Суворова Алла Васильевна, Дмитриев А. В.. "Conditions for the occurrence of intense fluxes of energetic electrons at L<1.2 associated with solar activity and solar wind parameters." Solar-Terrestrial Physics 10, no. 3 (2024): 75-82. https://doi.org/10.12737/stp-103202409.

WIKI

{{cite journal | author = Суворова А. В., Дмитриев А. В. | title = Conditions for the occurrence of intense fluxes of energetic electrons at L<1.2 associated with solar activity and solar wind parameters | journal = Solar-Terrestrial Physics | year = 2024 | volume = 10 | issue = 3 | pages = 75-82 | doi = 10.12737/stp-103202409 }}

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CONDITIONS FOR THE OCCURRENCE OF INTENSE FLUXES OF ENERGETIC ELECTRONS AT L<1.2 ASSOCIATED WITH SOLAR ACTIVITY AND SOLAR WIND PARAMETERS Conditions for the occurrence of intense fluxes of energetic electrons at L<1.2 associated with solar activity and solar wind parameters

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