Journal article
Jupiter's UV Auroral Response to a Magnetospheric Compression Event
Journal of geophysical research. Planets, Vol.130(6), e2025JE009012
06/01/2025
DOI: 10.1029/2025JE009012
Abstract
The highly elliptical polar orbit of the Juno mission provides a unique opportunity to simultaneously measure the compression state of Jupiter's magnetosphere and the total power emitted by the planet's ultraviolet aurora, using a single spacecraft. This allows us to study how Jupiter's aurora respond to a compression event. In this paper, we present a case study of an extreme compression event that occurred on December 6-7 2022 when Juno was a distance of 70 RJ from Jupiter. This extreme compression was accompanied by a very large increase in the ultraviolet auroral emissions to 12 TW, a factor of six higher than the baseline level. This event coincided with the predicted arrival of a powerful interplanetary shock, which was expected to cause the largest increase in the solar wind dynamic pressure seen thus far during the Juno mission. The simultaneous occurrence of the interplanetary shock, the extreme compression and the bright ultraviolet aurora suggests that in this case, the auroral brightening was caused by the solar wind shock compressing the magnetosphere.
Details
- Title: Subtitle
- Jupiter's UV Auroral Response to a Magnetospheric Compression Event
- Creators
- R. S. Giles - Southwest Research InstituteT. K. Greathouse - Southwest Research InstituteR. W. Ebert - Southwest Research InstituteW. S. Kurth - University of IowaC. K. Louis - Université Paris CitéM. F. Vogt - Planetary Science InstituteB. Bonfond - University of LiègeD. Grodent - University of LiègeJ. -C. Gerard - University of LiègeG. R. Gladstone - Southwest Research InstituteJ. A. Kammer - Southwest Research InstituteV. Hue - Centre National de la Recherche ScientifiqueR. J. Wilson - Laboratory for Atmospheric and Space PhysicsS. J. Bolton - Southwest Research InstituteJ. E. P. Connerney - Goddard Space Flight Center
- Resource Type
- Journal article
- Publication Details
- Journal of geophysical research. Planets, Vol.130(6), e2025JE009012
- DOI
- 10.1029/2025JE009012
- ISSN
- 2169-9097
- eISSN
- 2169-9100
- Publisher
- Amer Geophysical Union
- Number of pages
- 11
- Grant note
- Frontiers Clinical and Translational Science Institute, University of Kansas NASA's New Frontiers Program for Juno CNES; Centre National D'etudes Spatiales CNRS/INSU national programs of planetology (PNP)
- Language
- English
- Date published
- 06/01/2025
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984833487902771
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