Analytic Modeling of Magnetic Field in the Magnetosheath and Outer Magnetosphere

0519278 - ASÚ 2020 RIV US eng J - Journal Article
Romashets, E. P. - Vandas, Marek
Analytic Modeling of Magnetic Field in the Magnetosheath and Outer Magnetosphere.
Journal of Geophysical Research-Space Physics. Roč. 124, č. 4 (2019), s. 2697-2710. ISSN 2169-9380. E-ISSN 2169-9402
R&D Projects: GA ČR(CZ) GA17-06065S
Institutional support: RVO:67985815
Keywords : solar-cycle variations * magnetopause shape * predictive model
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 2.799, year: 2019
Method of publishing: Limited access
https://doi.org/10.1029/2018ja026006

Magnetosheath is a region surrounded by the bow shock and the magnetopause. According to statistical analysis, the boundaries can be treated as nonconfocal paraboloids of rotations. It is not easy to meet boundary conditions simultaneously on both sides. This problem is treated here and its solution is presented. A linear combination of harmonics that satisfy the condition on the magnetopause are selected in order to meet the condition on the bow shock. The method allows to calculate surface currents on the magnetopause. It is applied for typical conditions in solar wind. A modified magnetic dipole is used as a model of the magnetospheric field. Its modification is found by the method of potentials using cylindrical harmonics. Magnetopause currents are compared with results from a model with confocal paraboloids, which is commonly used in literature.
Permanent Link: http://hdl.handle.net/11104/0304276