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Curvilinear approximation of interplanetary shock frontстатья
- Авторы: Shiryaev A.O., Kaportseva K.B., A S.Lavrukhin
- Журнал: Astronomical and Astrophysical Transactions
- Том: 35
- Номер: 4
- Год издания: 2025
- Издательство: Cambridge Scientific Publishers
- Местоположение издательства: Cambridge
- DOI: 10.17184/eac.9781908106070
- Аннотация: Interplanetary coronal mass ejections (ICMEs) are major solar plasma eruptions that propagate through the heliosphere into interplanetary space. Geoeffective ICMEs travel much faster than ambient solar wind, creating magnetohydrodynamic shockwaves. The geometry of the interplanetary shockwave affects the characteristics of the magnetospheric response. In this paper standard magnetohydrodynamic methods calculation of interplanetary shockwave normals are described and compared to multi-spacecraft kinematic methods. In addition to standard kinematic approximation via a plane we present a curvilinear model of the interplanetary shock front that models it as a section of the spherical surface. The use of curvilinear shock models can allow for more accurate estimation of the angle between the interplanetary shockwave normal and the Sun-Earth line, which affects the magnetospheric response. The results of magnetohydrodynamic and kinematic calculations of the geometry of the shock that caused the May 10, 2024 magnetic storm are presented and the obtained impact angle matches the results in established catalogs within 23 degrees.
- Добавил в систему: Ширяев Антон Олегович