Xu, Y;
Yao, ZH;
Zhang, B;
Delamere, PA;
Ray, LC;
Dunn, WR;
Badman, SV;
... Wei, Y; + view all
(2023)
On the Relation Between Jupiter's Aurora and the Dawnside Current Sheet.
Geophysical Research Letters
, 50
(13)
10.1029/2023gl104123.
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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.
| Type: | Article |
|---|---|
| Title: | On the Relation Between Jupiter's Aurora and the Dawnside Current Sheet |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1029/2023gl104123 |
| Publisher version: | https://doi.org/10.1029/2023GL104123 |
| 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: | Jupiter, magnetosphere, current sheet, aurora |
| 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.ucl.ac.uk/id/eprint/10173342 |
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