Solar-Terrestrial Physics Solar-Terrestrial Physics Solar-Terrestrial Physics 2500-0535 33963 10.12737/stp-54201905 Results of current research Results of current research Results of current research Diamagnetic plasmoids as part of diamagnetic structures of the slow solar wind and their impact on Earth’s magnetosphere Diamagnetic plasmoids as part of diamagnetic structures of the slow solar wind and their impact on Earth’s magnetosphere Пархомов Владимир Александрович Parhomov Vladimir Aleksandrovich pekines_41@mail.ru

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 Еселевич Виктор Григорьевич Eselevich Viktor Grigoryevich esel@iszf.irk.ru

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 Еселевич Максим Викторович Eselevich Maxim Viktorovich mesel@iszf.irk.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 Дмитриев Алексей Владимирович Dmitriev Alexei Vladimirovich dalex@jupiter.ss.ncu.edu.tw Ведерникова Татьяна Ивановна Vedernikova Tatyana Ivanovna vedernikovati@bgu.ru

кандидат технических наук;

candidate of technical sciences;

 Байкальский государственный университет Иркутск Россия Baikal state university Irkutsk Russian Federation Институт солнечно-земной физики СО РАН Иркутск Россия Institute of Solar Terrestrial Physics SB RAS Irkutsk Russian Federation Институт солнечно-земной физики СО РАН Иркутск Россия Institute of Solar Terrestrial Physics SB RAS Irkutsk Russian Federation Научно-исследовательский институт ядерной физики им. Д.В. Скобельцина МГУ, Москва , Россия Москва Россия Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow , Russian Federation Moscow Russian Federation Факультет космических наук и инженерии, Национальный Центральный Университет, Тайвань Тайвань Китайская Республика Department of Space Science and Engineering, National Central University, Taiwan Taiwan Taiwan Байкальский государственный университет Иркутск Россия Baikal State University Irkutsk Russian Federation 5 4 34 45 https://zh-szf.ru/en/nauka/article/33963/view

We have shown that diamagnetic structures (DSs), which form the basis of the slow quasi-stationary solar wind (SW), are observed in Earth’s orbit as a sequence of DSs of various scales. The analysis of this phenomenon indicates that diamagnetic plasmoids in SW, whose concept was introduced by Karlsson in 2015, are identical to small-scale DSs. We have found that the impact of a sequence of DSs in the slow SW on Earth’s magnetosphere causes an increase in geomagnetic activity. Isolated DSs generate short-term magnetic disturbances whose duration is approximately equal to the DS duration. Hence, a sequence of DSs can cause sawtooth substorms. We emphasize that the interaction of DS in the slow SW under northward interplanetary magnetic field can be associated with penetration of DS high-density plasma into the magnetosphere.

We have shown that diamagnetic structures (DSs), which form the basis of the slow quasi-stationary solar wind (SW), are observed in Earth’s orbit as a sequence of DSs of various scales. The analysis of this phenomenon indicates that diamagnetic plasmoids in SW, whose concept was introduced by Karlsson in 2015, are identical to small-scale DSs. We have found that the impact of a sequence of DSs in the slow SW on Earth’s magnetosphere causes an increase in geomagnetic activity. Isolated DSs generate short-term magnetic disturbances whose duration is approximately equal to the DS duration. Hence, a sequence of DSs can cause sawtooth substorms. We emphasize that the interaction of DS in the slow SW under northward interplanetary magnetic field can be associated with penetration of DS high-density plasma into the magnetosphere.

 diamagnetic structures of solar wind diamagnetic plasmoids streamer chains sawtooth substorms diamagnetic structures of solar wind diamagnetic plasmoids streamer chains sawtooth substorms

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