Plasma environment in the wake of Titan from hybrid simulation: A case study

Details Plasma environment in the wake of Titan from hybrid simulation: A case study Plasma environment in the wake of Titan from hybrid simulation: A case study

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3424s07m&link_type=abstract

Geophysical Research Letters, Volume 34, Issue 24, CiteID L24S07

Physics

Plasma Physics

23

Space Plasma Physics: Kinetic And Mhd Theory, Planetary Sciences: Solar System Objects: Titan, Space Plasma Physics: Ionization Processes (2423)

Scientific paper

On 26 December 2005, the Cassini spacecraft flew through Titan's plasma wake and revealed a complex and dynamic region. Observations suggest a strong asymmetry which seems to be displaced from the ideal position of the wake. Two distinct plasma regions are identified with a significant difference on the electron number density and on the plasma composition. Simulation results using a three-dimensional and multi-species hybrid model, performed in conditions similar to those encountered during the flyby, are presented and compared to the observations. An acceptable agreement is shown between the model predictions and the observations. We suggest that the observed asymmetries, in terms of density and plasma composition, are mainly caused by the a combination of the asymmetry in the ion/electron production rate and the magnetic field morphology, where the first plasma region is connected to the dayside hemisphere of Titan's ionosphere while the other is connected to the nightside hemisphere.

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