Three Dimensional Bow Shock Structure and Dynamics

Details Three Dimensional Bow Shock Structure and Dynamics Three Dimensional Bow Shock Structure and Dynamics

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsm31c..02d&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SM31C-02

Physics

[2700] Magnetospheric Physics, [2740] Magnetospheric Physics / Magnetospheric Configuration And Dynamics, [2784] Magnetospheric Physics / Solar Wind/Magnetosphere Interactions

Scientific paper

A three dimensional empirical model of Saturn's bow shock is presented. The model is constructed using over 300 observations of the shock surface identified in data from the Pioneer 11, Voyager 2 and Cassini spacecraft between September 1979 and August 2010. Solar wind densities for the Cassini crossings are estimated from Langmuir wave observations made by the Radio and Plasma Wave Subsystem. Velocities are propagated from earth-based observations using the Michigan Solar Wind Model. The 300 crossings are well distributed in local time and cover latitudes from -30 to +45 degrees, thus allowing the three dimensional structure of the shock surface to be investigated. Evidence for polar flattening and dawn-dusk asymmetry is discussed, as is the scaling between shock standoff distance and solar wind dynamic pressure. Comparisons are made with both the jovian and terrestrial systems.

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