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Article: Periodicities and Plasma Density Structure of Jupiter's Dawnside Magnetosphere

TitlePeriodicities and Plasma Density Structure of Jupiter's Dawnside Magnetosphere
Authors
Keywordsglobal simulation
Jupiter
magnetodisc
periodicities
plasmadisc
structure
Issue Date2023
Citation
Journal of Geophysical Research: Planets, 2023, v. 128, n. 2, article no. e2022JE007637 How to Cite?
AbstractAbility to quantify variations in magnetic field topology and density within Jupiter's magnetosphere is an important step in understanding the overall structure and dynamics. The Juno spacecraft has provided a rich data set in the dawnside magnetosphere. The recent Grid Agnostic MHD for Extended Research Applications (GAMERA) global simulation study by Zhang et al. (2021, https://doi.org/10.1126/sciadv.abd1204) showed a highly structured plasmadisc with closed magnetic field lines mapped between the outer dawn-tail flank and the high-latitude polar region. To test these model predictions, we examined Juno's magnetic field data and electron/energetic particle data to categorize portions of orbits 1–15 into one of three regions based on plasma confinement: the flux pileup region, the intermediate region, and the plasmadisc region. For each region we examined periodicities from magnetic field fluctuations and particle density fluctuations on the 1–10 hr time scale. Periodicities on this time scale could relate to internal (e.g., plasmadisc structure) or external processes (e.g., Kelvin-Helmholtz vortices). Similar analysis was performed on the GAMERA simulation with the data split into two regions, an outer (150 > R > 60) region and an inner (R < 60) region. Finally, using published density moments from Huscher et al. (2021, https://doi.org/10.1029/2021JA029446), we compared the relative density variations of the Juno moments and the GAMERA simulation to further understand the overall structure and dynamics of the plasmadisc. The agreement between data and simulation supports the existence of such a highly structured plasmadisc.
Persistent Identifierhttp://hdl.handle.net/10722/334901
ISSN
2023 Impact Factor: 3.9
2023 SCImago Journal Rankings: 1.650
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorSchok, A. A.-
dc.contributor.authorDelamere, P. A.-
dc.contributor.authorMino, B.-
dc.contributor.authorDamiano, P. A.-
dc.contributor.authorZhang, B.-
dc.contributor.authorSciola, A.-
dc.contributor.authorSorathia, K.-
dc.contributor.authorWing, S.-
dc.contributor.authorJohnson, J. R.-
dc.contributor.authorMa, X.-
dc.contributor.authorYao, Z.-
dc.contributor.authorBrambles, O.-
dc.date.accessioned2023-10-20T06:51:36Z-
dc.date.available2023-10-20T06:51:36Z-
dc.date.issued2023-
dc.identifier.citationJournal of Geophysical Research: Planets, 2023, v. 128, n. 2, article no. e2022JE007637-
dc.identifier.issn2169-9097-
dc.identifier.urihttp://hdl.handle.net/10722/334901-
dc.description.abstractAbility to quantify variations in magnetic field topology and density within Jupiter's magnetosphere is an important step in understanding the overall structure and dynamics. The Juno spacecraft has provided a rich data set in the dawnside magnetosphere. The recent Grid Agnostic MHD for Extended Research Applications (GAMERA) global simulation study by Zhang et al. (2021, https://doi.org/10.1126/sciadv.abd1204) showed a highly structured plasmadisc with closed magnetic field lines mapped between the outer dawn-tail flank and the high-latitude polar region. To test these model predictions, we examined Juno's magnetic field data and electron/energetic particle data to categorize portions of orbits 1–15 into one of three regions based on plasma confinement: the flux pileup region, the intermediate region, and the plasmadisc region. For each region we examined periodicities from magnetic field fluctuations and particle density fluctuations on the 1–10 hr time scale. Periodicities on this time scale could relate to internal (e.g., plasmadisc structure) or external processes (e.g., Kelvin-Helmholtz vortices). Similar analysis was performed on the GAMERA simulation with the data split into two regions, an outer (150 > R > 60) region and an inner (R < 60) region. Finally, using published density moments from Huscher et al. (2021, https://doi.org/10.1029/2021JA029446), we compared the relative density variations of the Juno moments and the GAMERA simulation to further understand the overall structure and dynamics of the plasmadisc. The agreement between data and simulation supports the existence of such a highly structured plasmadisc.-
dc.languageeng-
dc.relation.ispartofJournal of Geophysical Research: Planets-
dc.subjectglobal simulation-
dc.subjectJupiter-
dc.subjectmagnetodisc-
dc.subjectperiodicities-
dc.subjectplasmadisc-
dc.subjectstructure-
dc.titlePeriodicities and Plasma Density Structure of Jupiter's Dawnside Magnetosphere-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1029/2022JE007637-
dc.identifier.scopuseid_2-s2.0-85148723857-
dc.identifier.volume128-
dc.identifier.issue2-
dc.identifier.spagearticle no. e2022JE007637-
dc.identifier.epagearticle no. e2022JE007637-
dc.identifier.eissn2169-9100-
dc.identifier.isiWOS:001000268500002-

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