Solar-Terrestrial Physics Solar-Terrestrial Physics Solar-Terrestrial Physics 2500-0535 19710 10.12737/stp-34201705 Results of current research Results of current research Results of current research Features of the impact of the solar wind diamagnetic structure on Earth’s magnetosphere Features of the impact of the solar wind diamagnetic structure on Earth’s magnetosphere Пархомов Владимир Александрович Parhomov Vladimir Aleksandrovich pekines_41@mail.ru

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 Бородкова Наталия Львовна Borodkova Natalia Lvovna nlbor@mail.ru

кандидат физико-математических наук;

candidate 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 Чиликин Виталий Эдуардович Chilikin Vitaliy Eduardovich Байкальский государственный университет Иркутск Россия Baikal state university Irkutsk Russian Federation Институт космических исследований РАН Москва Россия Institute of Space Research RAS Moscow 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 Baikal State University 3 4 44 57 https://zh-szf.ru/en/nauka/article/19710/view

In Earth’s orbit on June 28, 1999, there was a diamagnetic structure (DS) representing a filament with a uniquely high speed (about 900 km/s). We show that the filament is a part of the specific sporadic solar wind (SW) stream, which is characterized as a small interplanetary transient. We report the results of studies on the interaction between such a fast filament (DS) and Earth’s magnetosphere. Around noon hours at daytime cusp latitudes, we recorded a powerful aurora in the UV band (shock aurora), which rapidly spread to the west and east. Ground-based observations of geo-magnetic field variations, auroral absorption, and auro-ras on the midnight meridian have shown the develop-ment of a powerful substorm-like disturbance (SLD) (AE~1000 nT), whose origin is associated with the im-pact of the SW diamagnetic structure on the magneto-sphere. The geostationary satellite GOES-8, which was in the midnight sector of the outer quasi-capture region during SLD, recorded variations of the Bz and Bx geo-magnetic components corresponding to the dipolization process.

In Earth’s orbit on June 28, 1999, there was a diamagnetic structure (DS) representing a filament with a uniquely high speed (about 900 km/s). We show that the filament is a part of the specific sporadic solar wind (SW) stream, which is characterized as a small interplanetary transient. We report the results of studies on the interaction between such a fast filament (DS) and Earth’s magnetosphere. Around noon hours at daytime cusp latitudes, we recorded a powerful aurora in the UV band (shock aurora), which rapidly spread to the west and east. Ground-based observations of geo-magnetic field variations, auroral absorption, and auro-ras on the midnight meridian have shown the develop-ment of a powerful substorm-like disturbance (SLD) (AE~1000 nT), whose origin is associated with the im-pact of the SW diamagnetic structure on the magneto-sphere. The geostationary satellite GOES-8, which was in the midnight sector of the outer quasi-capture region during SLD, recorded variations of the Bz and Bx geo-magnetic components corresponding to the dipolization process.

 streamer filament diamagnetic structure; dayside auroras shock aurora substorm-like magnetospheric disturbance streamer filament diamagnetic structure; dayside auroras shock aurora substorm-like magnetospheric disturbance

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