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Article: Asymmetric Kelvin-Helmholtz Instability at Jupiter's Magnetopause Boundary: Implications for Corotation-Dominated Systems

TitleAsymmetric Kelvin-Helmholtz Instability at Jupiter's Magnetopause Boundary: Implications for Corotation-Dominated Systems
Authors
KeywordsDawn-dusk asymmetry
Global MHD
Jupiter magnetosphere
Kelvin-Helmholtz instability
Solar wind-magnetosphere interactions
Issue Date2018
PublisherAmerican Geophysical Union. The Journal's web site is located at https://agupubs.onlinelibrary.wiley.com/journal/19448007
Citation
Geophysical Research Letters, 2018, v. 45, p. 56-63 How to Cite?
Abstract©2018. American Geophysical Union. The multifluid Lyon-Fedder-Mobarry (MFLFM) global magnetosphere model is used to study the interactions between solar wind and rapidly rotating, internally driven Jupiter magnetosphere. The MFLFM model is the first global simulation of Jupiter magnetosphere that captures the Kelvin-Helmholtz instability (KHI) in the critically important subsolar region. Observations indicate that Kelvin-Helmholtz vortices are found predominantly in the dusk sector. Our simulations explain that this distribution is driven by the growth of KHI modes in the prenoon and subsolar region (e.g., > 10 local time) that are advected by magnetospheric flows to the dusk sector. The period of density fluctuations at the dusk terminator flank (18 magnetic local time, MLT) is roughly 1.4 h compared with 7.2 h at the dawn flank (6 MLT). Although the simulations are only performed using parameters of the Jupiter's magnetosphere, the results may also have implications for solar wind-magnetosphere interactions at other corotation-dominated systems such as Saturn. For instance, the simulated average azimuthal speed of magnetosheath flows exhibit significant dawn-dusk asymmetry, consistent with recent observations at Saturn. The results are particularly relevant for the ongoing Juno mission and the analysis of dawnside magnetopause boundary crossings for other planetary missions.
Persistent Identifierhttp://hdl.handle.net/10722/250898
ISSN
2023 Impact Factor: 4.6
2023 SCImago Journal Rankings: 1.850
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhang, B.-
dc.contributor.authorDelamere, P. A.-
dc.contributor.authorMa, X.-
dc.contributor.authorBurkholder, B.-
dc.contributor.authorWiltberger, M.-
dc.contributor.authorLyon, J. G.-
dc.contributor.authorMerkin, V. G.-
dc.contributor.authorSorathia, K. A.-
dc.date.accessioned2018-02-01T01:54:01Z-
dc.date.available2018-02-01T01:54:01Z-
dc.date.issued2018-
dc.identifier.citationGeophysical Research Letters, 2018, v. 45, p. 56-63-
dc.identifier.issn0094-8276-
dc.identifier.urihttp://hdl.handle.net/10722/250898-
dc.description.abstract©2018. American Geophysical Union. The multifluid Lyon-Fedder-Mobarry (MFLFM) global magnetosphere model is used to study the interactions between solar wind and rapidly rotating, internally driven Jupiter magnetosphere. The MFLFM model is the first global simulation of Jupiter magnetosphere that captures the Kelvin-Helmholtz instability (KHI) in the critically important subsolar region. Observations indicate that Kelvin-Helmholtz vortices are found predominantly in the dusk sector. Our simulations explain that this distribution is driven by the growth of KHI modes in the prenoon and subsolar region (e.g., > 10 local time) that are advected by magnetospheric flows to the dusk sector. The period of density fluctuations at the dusk terminator flank (18 magnetic local time, MLT) is roughly 1.4 h compared with 7.2 h at the dawn flank (6 MLT). Although the simulations are only performed using parameters of the Jupiter's magnetosphere, the results may also have implications for solar wind-magnetosphere interactions at other corotation-dominated systems such as Saturn. For instance, the simulated average azimuthal speed of magnetosheath flows exhibit significant dawn-dusk asymmetry, consistent with recent observations at Saturn. The results are particularly relevant for the ongoing Juno mission and the analysis of dawnside magnetopause boundary crossings for other planetary missions.-
dc.languageeng-
dc.publisherAmerican Geophysical Union. The Journal's web site is located at https://agupubs.onlinelibrary.wiley.com/journal/19448007-
dc.relation.ispartofGeophysical Research Letters-
dc.rights©2017. American Geophysical Union. All Rights Reserved. This article is available at https://doi.org/10.1002/2017GL076315.-
dc.subjectDawn-dusk asymmetry-
dc.subjectGlobal MHD-
dc.subjectJupiter magnetosphere-
dc.subjectKelvin-Helmholtz instability-
dc.subjectSolar wind-magnetosphere interactions-
dc.titleAsymmetric Kelvin-Helmholtz Instability at Jupiter's Magnetopause Boundary: Implications for Corotation-Dominated Systems-
dc.typeArticle-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1002/2017GL076315-
dc.identifier.scopuseid_2-s2.0-85040197498-
dc.identifier.hkuros290276-
dc.identifier.volume45-
dc.identifier.spage56-
dc.identifier.epage63-
dc.identifier.eissn1944-8007-
dc.identifier.isiWOS:000423431800007-
dc.identifier.issnl0094-8276-

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