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Magnetosheath PlasmaFlow and Its Responseto IMF and GeodipoleTilt as Obtained Fromthe Data-BasedModeling Tsyganenko N.A.Semenov V.S.Erkaev N.V.2024 год

Magnetosheath Plasma Flow and Its Response to IMF and Geodipole Tilt as Obtained From the Data-Based Modeling : научное издание
статья из журнала

Дополнительные ссылки: eLibrary
База данных: Каталог библиотеки СФУ
Библиографическое описание: Magnetosheath Plasma Flow and Its Response to IMF and Geodipole Tilt as Obtained From the Data-Based Modeling : научное издание / N. A. Tsyganenko [et al.]. - Текст : непосредственный // Journal of Geophysical Research: Space Physics. - 2024. - Т. 129, № 11. - ISSN 2169-9402, DOI 10.1029/2024ja033233.
Аннотация: <jats:title>Abstract</jats:title><jats:p>Large-scale patterns of the steady-state magnetosheath plasma flow and their dependence on the interplanetary magnetic field (IMF) have been reconstructed for the first time on the basis of large multi-year multi-mission pool of spacecraft observations, concurrent interplanetary data, and an empirical high-resolution model. The flow model architecture builds upon a recently developed magnetosheath magnetic field representation by flexible expansions of its toroidal and poloidal components in a coordinate system, naturally conformed with the magnetopause and bow shock shapes. The model includes two physics-based flow symmetry modes: the first one treats the magnetosphere as an axisymmetric unmagnetized obstacle, whereas the second mode takes into account the geodipole tilt, an important factor in the reconnection effects. The spacecraft data pool includes 1-min average data by Themis (2007–2024), Cluster (2001–2022), and MMS-1 (2015–2024) missions, as well as OMNI interplanetary data. The model drivers include the solar wind particle flux, IMF components, and the geodipole tilt angle. The model calculations faithfully reproduce the average plasma flow geometry and substantial effects have been found of the IMF orientation and magnitude, a principal factor that defines electromagnetic forces inside the magnetosheath. A strong dependence of the magnetosheath flow patterns on the Earth's dipole tilt indicates an important contribution of reconnection effects at the magnetopause to the solar wind particle transport around the dayside magnetosphere.</jats:p>
Год издания: 2024
Авторы: Tsyganenko N.A. , Semenov V.S. , Erkaev N.V. , Gubaidulin N.T.
Источник: Journal of Geophysical Research: Space Physics
Выпуск: Т. 129, № 11
Держатель оригинала документа: Applied Mechanics Cathedra Siberian Federal University Krasnoyarsk Russian Federation, Institute of Computational Modelling of Siberian Branch of the Russian Academy of Sciences Krasnoyarsk Russian Federation, Saint Petersburg State University Saint Petersburg Russia
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