Journal article
Closed fluxtubes and dispersive proton conics at Jupiter's polar cap
Geophysical research letters, Vol.49(9), pp.e2022GL098741-n/a
05/16/2022
DOI: 10.1029/2022GL098741
PMCID: PMC9285739
PMID: 35859815
Abstract
Two distinct proton populations are observed over Jupiter's southern polar cap: a approximately 1 keV core population and approximately 1-300 keV dispersive conic population at 6-7 R (sub J) planetocentric distance. We find the 1 keV core protons are likely the seed population for the higher-energy dispersive conics, which are accelerated from a distance of approximately 3-5 R (sub J) . Transient wave-particle heating in a "pressure-cooker" process is likely responsible for this proton acceleration. The plasma characteristics and composition during this period show Jupiter's polar-most field lines can be topologically closed, with conjugate magnetic footpoints connected to both hemispheres. Finally, these observations demonstrate energetic protons can be accelerated into Jupiter's magnetotail via wave-particle coupling. Abstract Copyright (2022). The Authors.
Details
- Title: Subtitle
- Closed fluxtubes and dispersive proton conics at Jupiter's polar cap
- Creators
- Jamey R. Szalay - Princeton UniversityGeorge Clark - Johns Hopkins University Applied Physics LaboratoryGeorge Livadiotis - Princeton UniversityDavid J. McComas - Princeton UniversityDonald G. Mitchell - Johns Hopkins University Applied Physics LaboratoryJamie S. Rankin - Princeton UniversityAli H. Sulaiman - University of IowaFrederic Allegrini - The University of Texas at San AntonioFran Bagenal - Laboratory for Atmospheric and Space PhysicsRobert W. Ebert - Southwest Research InstituteG. Randy Gladstone - Southwest Research InstituteWilliam S. Kurth - University of IowaBarry H. Mauk - Johns Hopkins University Applied Physics LaboratoryPhilip W. Valek - Southwest Research InstituteR. J. Wilson - Laboratory for Atmospheric and Space PhysicsScott J. Bolton - Southwest Research Institute
- Resource Type
- Journal article
- Publication Details
- Geophysical research letters, Vol.49(9), pp.e2022GL098741-n/a
- DOI
- 10.1029/2022GL098741
- PMID
- 35859815
- PMCID
- PMC9285739
- NLM abbreviation
- Geophys Res Lett
- ISSN
- 0094-8276
- eISSN
- 1944-8007
- Publisher
- American Geophysical Union
- Grant note
- DOI: 10.13039/100000104, name: National Aeronautics and Space Administration, award: NNM06AA75C
- Language
- English
- Date published
- 05/16/2022
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984455545102771
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