Physics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsm23a1914r&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #SM23A-1914
Physics
[2732] Magnetospheric Physics / Magnetosphere Interactions With Satellites And Rings, [2772] Magnetospheric Physics / Plasma Waves And Instabilities, [5737] Planetary Sciences: Fluid Planets / Magnetospheres, [6200] Planetary Sciences: Solar System Objects
Scientific paper
Mirror Modes Waves (MMW) have been observed by the Cassini spacecraft in the Saturnian middle magnetosphere. These compressive waves are characterized by strong dips in magnetic field magnitude which are anti-correlated with the density. As with Ion Cyclotron Waves (ICW), MMW requires high anisotropy in the plasma temperature (pressure) (T⊥/T‖>>1). In this work we analyze four Cassini orbits from 2005 that had a low inclination angle, <0.5°. The data were obtained from the MAG and CAPS instruments. We analyze wave properties and study their region of occurrence. We have observed that the MMW can appear between 6RS and 6.9RS (1RS=60268 km), with respect to Saturn’s center. Additionally, we use linear kinetic theory to determine conditions for wave growth in a plasma resembling the regions where these waves and modes were observed.
Blanco-Cano Xochitl
Dougherty K. M. K. M.
Leisner Jared S.
Perez-Enriquez Roman
Rodriguez-Martinez Maria
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