On the Relation Between Jupiter's Aurora and the Dawnside Current Sheet

Xu, Y.; Yao, Zhonghua; Zhang, B.; Delamere, P. A.; Ray, L. C.; Dunn, W. R.; Badman, S. V.; Feng, E. H.; Zheng, Z. Q.; Bolton, S. J.; Grodent, Denis; Bonfond, Bertrand; Wei, Y.

doi:10.1029/2023gl104123

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On the Relation Between Jupiter's Aurora and the Dawnside Current Sheet

Xu, Y.; Yao, Zhonghua; Zhang, B. et al.

2023 • In Geophysical Research Letters, 50 (13)

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https://hdl.handle.net/2268/305133

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10.1029/2023gl104123

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Keywords :

General Earth and Planetary Sciences; Geophysics; Jupiter; Solar wind

Abstract :

[en] Jupiter's auroral emission is a spectacular phenomenon that provides insight into energy release processes related to the coupling of its magnetosphere and ionosphere. This energy release is influenced by solar wind conditions. Using joint observations from Juno and the Hubble Space Telescope (HST), we statistically investigate the relationship between auroral power and current sheet variations under different solar wind conditions. In this study, we reveal that during global main auroral brightening events that are closely connected to solar wind compressions, the dawn side current sheet is substantially thinner than during times when a quiet auroral morphology is present. Furthermore, the total current intensity in the current sheet is found to increase under solar wind compression conditions compared to the quiet period. These findings provide important observational evidence for how magnetospheric dynamics driven by solar wind behavior affect auroral activity, deepening our understanding of the coupling between Jupiter's magnetosphere and ionosphere.

Research Center/Unit :

STAR - Space sciences, Technologies and Astrophysics Research - ULiège

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

Xu, Y. ; Key Laboratory of Earth and Planetary Physics Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China ; College of Earth and Planetary Sciences University of Chinese Academy of Sciences Beijing China ; Department of Physics Lancaster University Lancaster UK

Yao, Zhonghua ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP) ; Key Laboratory of Earth and Planetary Physics Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China ; College of Earth and Planetary Sciences University of Chinese Academy of Sciences Beijing China ; Department of Physics and Astronomy University College London London UK

Zhang, B. ; Department of Earth Sciences University of Hong Kong Pokfulam China

Delamere, P. A. ; Department of Physics University of Alaska Fairbanks Fairbanks AK USA

Ray, L. C. ; Department of Physics Lancaster University Lancaster UK

Dunn, W. R. ; Department of Physics and Astronomy University College London London UK

Badman, S. V. ; Department of Physics Lancaster University Lancaster UK

Feng, E. H. ; Department of Earth Sciences University of Hong Kong Pokfulam China

Zheng, Z. Q. ; Department of Earth Sciences University of Hong Kong Pokfulam China

Bolton, S. J. ; Southwest Research Institute San Antonio TX USA

More authors (3 more)

Language :

English

Title :

On the Relation Between Jupiter's Aurora and the Dawnside Current Sheet

Publication date :

10 July 2023

Journal title :

Geophysical Research Letters

ISSN :

0094-8276

eISSN :

1944-8007

Publisher :

American Geophysical Union (AGU)

Volume :

Issue :

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2023GL104123

Funders :

F.R.S.-FNRS - Fonds de la Recherche Scientifique

Data Set :

https://pds-ppi.igpp.ucla.edu/search/view/?f=yes%26id=pds://PPI/JNO-J-3-FGM-CAL-V1.0

The Juno data presented in this study are available from NASA's Planetary Data System as part of the JNO-J-3-FGM-CAL-V1.0 data sets for the MAG instrument.

https://pds-ppi.igpp.ucla.edu/search/view/?f=yes%26id=pds://PPI/JNO-J-JED-3-CDR-V1.0

The Juno data presented in this study are available from NASA's Planetary Data System as part of the JNO-J-JED-3-CDR-V1.0 data sets for the JEDI instrument.

https://doi.org/10.17605/OSF.IO/BDZYF

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since 11 July 2023

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