Numerical modeling of the magnetosphere with data based internal magnetic field and arbitrary magnetopause

• Published in: Advances in Astronomy and Space Physics
• Date: 2011
• Main Authors: Dobreva, P.S., Kartalev, M.D.
• Format: Article
• Language: English
• Published: Advances in astronomy and space physics 2011
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/118974
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Numerical modeling of the magnetosphere with data based internal magnetic field and arbitrary magnetopause / P.S. Dobreva, M.D. Kartalev // Advances in Astronomy and Space Physics. — 2011. — Т. 1., вип. 1-2. — С. 73-76. — Бібліогр.: 22 назв. — англ.

We present a new model of the magnetospheric magnetic field. Using the finite element method, ChapmanFerraro problem is solved numerically in the considered approach. The whole magnetic field is a sum of: the dipole field, the field, produced by the internal current systems (cross-tail, Birkeland, ring currents) and the field induced by the magnetopause currents. In contrast to similar earlier models, the internal magnetospheric magnetic fields are taken from Tsyganenko data-based model. The magnetosphere boundary could be arbitrary (generally non-axisymmetric). Input model parameters are the solar wind parameters, the Dst index and the dipole tilt angle. We discuss some results, obtained in three dimensional solution of the Neumann-Dirichlet problem corresponding to a closed magnetosphere.