Variation of the Jovian Magnetopause Under Constant Solar Wind Conditions: Significance of Magnetodisc Dynamics

Feng，Enhao1,2; Zhang，Binzheng2; Yao，Zhonghua2,3; Delamere，Peter A.4; Zheng，Zhiqi2; Dunn，William R.5; Ye，Sheng Yi6

2023-06-28

10.1029/2023GL104046

Geophysical Research Letters   Impact Factor & Quartile

0094-8276

1944-8007

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.

Jovian magnetodisc Jovian magnetopause Jovian magnetosphere MHD simulation

SCI

English

NI Journal Papers

Others

National Natural Science Foundation of China[41922060];Science and Technology Facilities Council[ST/W003449/1];

Geology

Geosciences, Multidisciplinary

WOS:001012347400001

AMER GEOPHYSICAL UNION

GEOSCIENCES

2-s2.0-85164297563

Scopus

1.Department of Physics,the University of Hong Kong,Pokfulam,Hong Kong
2.Department of Earth Sciences,the University of Hong Kong,Pokfulam,Hong Kong
3.Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,China
4.Department of Physics,University of Alaska Fairbanks,Fairbanks,United States
5.Department of Physics and Astronomy,University College London,London,United Kingdom
6.Department of Earth and Space Sciences,Southern University of Science and Technology,Shenzhen,China

Feng，Enhao,Zhang，Binzheng,Yao，Zhonghua,et al. Variation of the Jovian Magnetopause Under Constant Solar Wind Conditions: Significance of Magnetodisc Dynamics[J]. Geophysical Research Letters,2023,50(12).

Feng，Enhao.,Zhang，Binzheng.,Yao，Zhonghua.,Delamere，Peter A..,Zheng，Zhiqi.,...&Ye，Sheng Yi.(2023).Variation of the Jovian Magnetopause Under Constant Solar Wind Conditions: Significance of Magnetodisc Dynamics.Geophysical Research Letters,50(12).

Feng，Enhao,et al."Variation of the Jovian Magnetopause Under Constant Solar Wind Conditions: Significance of Magnetodisc Dynamics".Geophysical Research Letters 50.12(2023).