Development of a fully self-consistent numerical simulation model for ring current dynamics in the inner magnetosphere

Details Development of a fully self-consistent numerical simulation model for ring current dynamics in the inner magnetosphere Development of a fully self-consistent numerical simulation model for ring current dynamics in the inner magnetosphere

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsm13a1783a&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SM13A-1783

Physics

[2730] Magnetospheric Physics / Magnetosphere: Inner, [2753] Magnetospheric Physics / Numerical Modeling, [2778] Magnetospheric Physics / Ring Current, [2788] Magnetospheric Physics / Magnetic Storms And Substorms

Scientific paper

A new self-consistent and kinetic model for ring current dynamics in the inner magnetosphere is presented. The transport of energetic ring current particles is described by a five-dimensional collisionless drift-kinetic equation in which particle trajectories are approximated by their guiding centers. A closed set of time evolution equations that couples the particle dynamics and the electromagnetic field in a fully self-consistent manner is derived. Moreover, a numerical simulation code solving the nonlinear equations in a global inner magnetosphere in three spatial dimensions (or five dimensions in phase space) is developed. It is demonstrated that the model can successfully describe the particle transport (both bounce and drift motions) as well as the propagation of magnetohydrodynamic (MHD) waves. Possible applications of the present model include sudden commencements (SCs), ULF oscillations in the inner magnetosphere either driven internally or externally, and modeling the variation of relativistic radiation belt electrons, etc.

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