Ma, YJ;
Nagy, AF;
Toth, G;
Cravens, TE;
Russell, CT;
Gombosi, TI;
Wahlund, JE;
... Neubauer, FM; + view all
(2007)
3D global multi-species Hall-MHD simulation of the Cassini T9 flyby.
Geophysical Research Letters
, 34
(24)
, Article L24S10. 10.1029/2007GL031627.
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Abstract
The wake region of Titan is an important component of Titan's interaction with its surrounding plasma and therefore a thorough understanding of its formation and structure is of primary interest. The Cassini spacecraft passed through the distant downstream region of Titan on 18: 59: 30 UT Dec. 26, 2005, which is referred to as the T9 flyby and provided a great opportunity to test our understanding of the highly dynamic wake region. In this paper we compare the observational data (from the magnetometer, plasma analyzer and Langmuir probe) with numerical results using a 7-species Hall MHD Titan model. There is a good agreement between the observed and modeled parameters, given the uncertainties in plasma measurements and the approximations inherent in the Hall MHD model. Our simulation results also show that Hall MHD model results fit the observations better than the non-Hall MHD model for the flyby, consistent with the importance of kinetic effects in the Titan interaction. Based on the model results, we also identify various regions near Titan where Hall MHD models are applicable.
| Type: | Article |
|---|---|
| Title: | 3D global multi-species Hall-MHD simulation of the Cassini T9 flyby |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1029/2007GL031627 |
| Publisher version: | http://dx.doi.org/10.1029/2007GL031627 |
| Language: | English |
| Additional information: | Copyright 2007 by the American Geophysical Union |
| Keywords: | Plasma spectrometer, Titans ionosphere, Hybrid simulation, Magnetosphere, Voyager-1, Flow |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics |
| URI: | https://discovery.ucl.ac.uk/id/eprint/140844 |
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