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

Xu, Yan and Yao, Z. H. and Zhang, B. and Delamere, P. A. and Ray, Licia C and Dunn, W. R. and Badman, Sarah and Feng, E. H. and Zheng, Z. Q. and Bolton, S. J. and Grodent, D. C. and Bonfond, B. . and Wei, Y. (2023) On the Relation Between Jupiter's Aurora and the Dawnside Current Sheet. Geophysical Research Letters, 50 (13): e2023GL104. ISSN 0094-8276

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Abstract

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.

Item Type:
Journal Article
Journal or Publication Title:
Geophysical Research Letters
Uncontrolled Keywords:
Research Output Funding/yes_externally_funded
Subjects:
?? jupitermagnetospherecurrent sheetaurorayes - externally fundedgeophysicsgeneral earth and planetary sciencesearth and planetary sciences(all) ??
ID Code:
197965
Deposited By:
Deposited On:
13 Jul 2023 10:40
Refereed?:
Yes
Published?:
Published
Last Modified:
10 Oct 2024 15:15