Feng, Enhao;
Zhang, Binzheng;
Yao, Zhonghua;
Delamere, Peter A;
Zheng, Zhiqi;
Dunn, William R;
Ye, Sheng‐Yi;
(2023)
Variation of the Jovian Magnetopause Under Constant Solar Wind Conditions: Significance of Magnetodisc Dynamics.
Geophysical Research Letters
, 50
(12)
, Article e2023GL104046. 10.1029/2023gl104046.
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Abstract
It is generally believed that variations in the upstream solar wind (SW) and interplanetary magnetic field (IMF) conditions are the main cause of changes of Jupiter's magnetopause (JM) location. However, most previous pressure balance models for the JM are axisymmetric and do not consider internal drivers, for example, the dynamics of the magnetodisc. We use three-dimensional global magnetosphere simulations to investigate the variation of the JM under constant SW/IMF conditions. These simulations show that even without variations in the upstream driving conditions, the JM can exhibit dynamic variations, suggesting a range as large as 50 Jupiter radii in the subsolar location. Our study shows that the interchange structures in the Jovian magnetodisc will introduce significant radial dynamic pressure, which can drive significant variation in the JM location. The results provide important new context for interpreting the JM location and dynamics, with key implications for other internally mass-loaded and/or rapidly rotating systems.
| Type: | Article |
|---|---|
| Title: | Variation of the Jovian Magnetopause Under Constant Solar Wind Conditions: Significance of Magnetodisc Dynamics |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1029/2023gl104046 |
| Publisher version: | https://doi.org/10.1029/2023GL104046 |
| Language: | English |
| Additional information: | © 2023. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | Jovian magnetosphere, Jovian magnetopause, Jovian magnetodisc, MHD simulation |
| 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/10172752 |
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