Physics
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsm52a..08a&link_type=abstract
American Geophysical Union, Fall Meeting 2005, abstract #SM52A-08
Physics
2706 Cusp, 2723 Magnetic Reconnection (7526, 7835), 2724 Magnetopause And Boundary Layers, 2753 Numerical Modeling
Scientific paper
The magnetospheric cusps are an important structural element of the Earth's magnetosphere. Magnetic flux from the magnetospheric boundaries converges into the cusps and the magnetic field in the vicinity of the cusps rotates by 360 degrees. The magnetic field and plasma flow configuration allows for magnetic reconnection and Kelvin Helmholtz instabilities in the vicinity of the cusps. In addition plasma flow can become turbulent due to boundary layer separation as a result of the plasma flow over the cusp indentation. However, there are very few models based on first principles and with good numerical resolution which address the cusp physics. Here we will present results from a three dimensional MHD simulation with an initial configuration including a cusp-like magnetic field indentation. The initial conditions particularly address cases with various magnetic field orientations relative to the magnetosheath plasma flow. We investigate the cusp plasma properties in relation to the adjacent magnetosheath plasma and analyze the MHD turbulence spectrum.
Adamson E. T.
Nykyri Katariina
Otto Andreas
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