Millas, D;
Achilleos, N;
Guio, P;
Arridge, CS;
(2023)
Modelling magnetic fields and plasma flows in the magnetosphere of Jupiter.
Planetary and Space Science
, 225
, Article 105609. 10.1016/j.pss.2022.105609.
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Abstract
The magnetic fields of the giant planets, Jupiter and Saturn, deviate significantly from a pure magnetic dipole and the cold plasma is mostly centrifugally confined near the equator. The additional contribution of the azimuthal currents leads to the stretching of the magnetic field and the formation of a characteristic, disc-type structure known as a magnetodisc. We present here an updated version of a numerical implementation of Caudal's iterative scheme, used to create models of the magnetosphere. In particular, we include newer equatorial density, temperature and hot plasma profiles obtained from Galileo data. Finally, we describe and use an algorithm to update the angular velocity profile after the end of the iterative process, using information from the magnetodisc. We also present comparisons between the azimuthal current and plasma flow predicted by our model and those derived from spacecraft observations.
| Type: | Article |
|---|---|
| Title: | Modelling magnetic fields and plasma flows in the magnetosphere of Jupiter |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.pss.2022.105609 |
| Publisher version: | https://doi.org/10.1016/j.pss.2022.105609 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Astronomy & Astrophysics, Planetary magnetic fields, Angular velocity, Magnetohydrodynamics (MHD), Numerical methods, IONOSPHERE COUPLING CURRENTS, MIDDLE MAGNETOSPHERE, COROTATION LAG, HOT PLASMA, SOLAR-WIND, IO TORUS, TRANSPORT, GALILEO, FORCE |
| 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 Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10164965 |
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