Density and Magnetic Field Structure in the Plasmasphere: Comparison Between CLUSTER Data and Models

Details Density and Magnetic Field Structure in the Plasmasphere: Comparison Between CLUSTER Data and Models Density and Magnetic Field Structure in the Plasmasphere: Comparison Between CLUSTER Data and Models

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsm11a1599d&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SM11A-1599

Physics

2700 Magnetospheric Physics (6939), 2730 Magnetosphere: Inner, 2768 Plasmasphere

Scientific paper

The CLUSTER mission provides high time resolution four-point measurements of the plasmasphere near perigee. This allows to study the geometry and orientation of its overall density structure and magnetic field distribution. We present several CLUSTER plasmasphere crossings for which we compute the four-point spatial gradient of the electron density (WHISPER data) and of the magnetic field strength (FGM data), and we compare the direction of both gradients with the local field vector. We compare our CLUSTER results with models of the density and of the magnetic field inside the plasmasphere. We discuss in particular the density and magnetic field distribution along and transverse to field lines.

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