File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: On the Relation Between Auroral Morphologies and Compression Conditions of Jupiter's Magnetopause: Observations From Juno and the Hubble Space Telescope

TitleOn the Relation Between Auroral Morphologies and Compression Conditions of Jupiter's Magnetopause: Observations From Juno and the Hubble Space Telescope
Authors
Keywordsauroral dawn storm
field-aligned current
Jovian aurora
solar wind
Issue Date2022
Citation
Journal of Geophysical Research: Space Physics, 2022, v. 127, n. 10, article no. e2021JA029894 How to Cite?
AbstractJupiter displays the most powerful auroral emissions in our solar system, which result from strong energy dissipation in Jupiter's surrounding space environment. Although mass and energy in Jupiter's magnetosphere mostly come from the innermost Galilean moon Io's volcanic activity and Jupiter's rotation, solar wind perturbations can play crucial roles in releasing magnetospheric energy. The systematic response of the aurora to a solar wind compression remains poorly understood because of timing uncertainties. Here we report the analysis of a set of auroral images from the Hubble Space Telescope with contemporaneous in situ magnetopause detections from Juno, allowing for a more direct comparison. By analyzing the dawn side main auroral emission, we distinguish two non-mutually exclusive types of auroral enhancements: auroral dawn storm (ADS) featured with latitudinal extension in limited longitudes, and a long-lasting main auroral brightening with limited extension in latitudes while extending over a large longitude range. Only the latter systematically appears under a compressed magnetopause, while the dawn storms could occur whatever the state of the magnetopause. The results could provide important constraints to improve theoretical models and numerical simulations. During expanded magnetopause conditions, Jupiter's aurora displayed either quiet or dawn storm morphology. The result is consistent with recent discovery of the initiation of ADSs in midnight and post-midnight, possibly driven by magnetic reconnection plasma instabilities in night magnetotail. Our results show that some typical auroral morphologies could be used as a diagnostic of solar wind conditions at Jupiter.
Persistent Identifierhttp://hdl.handle.net/10722/334868
ISSN
2023 Impact Factor: 2.6
2023 SCImago Journal Rankings: 0.845
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYao, Z. H.-
dc.contributor.authorBonfond, B.-
dc.contributor.authorGrodent, D.-
dc.contributor.authorChané, E.-
dc.contributor.authorDunn, W. R.-
dc.contributor.authorKurth, W. S.-
dc.contributor.authorConnerney, J. E.P.-
dc.contributor.authorNichols, J. D.-
dc.contributor.authorPalmaerts, B.-
dc.contributor.authorGuo, R. L.-
dc.contributor.authorHospodarsky, G. B.-
dc.contributor.authorMauk, B. H.-
dc.contributor.authorKimura, T.-
dc.contributor.authorBolton, S. J.-
dc.date.accessioned2023-10-20T06:51:18Z-
dc.date.available2023-10-20T06:51:18Z-
dc.date.issued2022-
dc.identifier.citationJournal of Geophysical Research: Space Physics, 2022, v. 127, n. 10, article no. e2021JA029894-
dc.identifier.issn2169-9380-
dc.identifier.urihttp://hdl.handle.net/10722/334868-
dc.description.abstractJupiter displays the most powerful auroral emissions in our solar system, which result from strong energy dissipation in Jupiter's surrounding space environment. Although mass and energy in Jupiter's magnetosphere mostly come from the innermost Galilean moon Io's volcanic activity and Jupiter's rotation, solar wind perturbations can play crucial roles in releasing magnetospheric energy. The systematic response of the aurora to a solar wind compression remains poorly understood because of timing uncertainties. Here we report the analysis of a set of auroral images from the Hubble Space Telescope with contemporaneous in situ magnetopause detections from Juno, allowing for a more direct comparison. By analyzing the dawn side main auroral emission, we distinguish two non-mutually exclusive types of auroral enhancements: auroral dawn storm (ADS) featured with latitudinal extension in limited longitudes, and a long-lasting main auroral brightening with limited extension in latitudes while extending over a large longitude range. Only the latter systematically appears under a compressed magnetopause, while the dawn storms could occur whatever the state of the magnetopause. The results could provide important constraints to improve theoretical models and numerical simulations. During expanded magnetopause conditions, Jupiter's aurora displayed either quiet or dawn storm morphology. The result is consistent with recent discovery of the initiation of ADSs in midnight and post-midnight, possibly driven by magnetic reconnection plasma instabilities in night magnetotail. Our results show that some typical auroral morphologies could be used as a diagnostic of solar wind conditions at Jupiter.-
dc.languageeng-
dc.relation.ispartofJournal of Geophysical Research: Space Physics-
dc.subjectauroral dawn storm-
dc.subjectfield-aligned current-
dc.subjectJovian aurora-
dc.subjectsolar wind-
dc.titleOn the Relation Between Auroral Morphologies and Compression Conditions of Jupiter's Magnetopause: Observations From Juno and the Hubble Space Telescope-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1029/2021JA029894-
dc.identifier.scopuseid_2-s2.0-85139678328-
dc.identifier.volume127-
dc.identifier.issue10-
dc.identifier.spagearticle no. e2021JA029894-
dc.identifier.epagearticle no. e2021JA029894-
dc.identifier.eissn2169-9402-
dc.identifier.isiWOS:000861895300001-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats