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dc.contributor.authorGuio, Patrick
dc.contributor.authorStaniland, Ned
dc.contributor.authorAchilleos, Nicholas
dc.contributor.authorArridge, Christopher
dc.date.accessioned2021-03-16T11:04:41Z
dc.date.available2021-03-16T11:04:41Z
dc.date.issued2020-05-13
dc.description.abstractThe spatial and temporal characterization of trapped charged particle trajectories in magnetospheres has been extensively studied in dipole magnetic field structures. Such studies have allowed the calculation of spatial quantities, such as equatorial loss cone size as a function of radial distance, the location of the mirror points along particular field lines (<i>L</i>‐shells) as a function of the particle's equatorial pitch angle, and temporal quantities such as the bounce period and drift period as a function of the radial distance and the particle's pitch angle at the equator. In this study, we present analogous calculations for the disk‐like field structure associated with the giant rotation‐dominated magnetospheres of Jupiter and Saturn as described by the University College London/Achilleos‐Guio‐Arridge (UCL/AGA) magnetodisk model. We discuss the effect of the magnetodisk field on various particle parameters and make a comparison with the analogous motion in a dipole field. The bounce period in a magnetodisk field is in general smaller the larger the equatorial distance and pitch angle, by a factor as large as ∼8 for Jupiter and ∼2.5 for Saturn. Similarly, the drift period is generally smaller, by a factor as large as ∼2.2 for equatorial distances ∼20–24 <i>R</i><sub>J</sub> at Jupiter and ∼1.5 for equatorial distances ∼7–11 <i>R</i><sub>S</sub> at Saturn.en_US
dc.identifier.citationGuio P, Staniland, Achilleos, Arridge. Trapped Particle Motion In Magnetodisc Fields. Journal of Geophysical Research (JGR): Space Physics. 2020;125(7)en_US
dc.identifier.cristinIDFRIDAID 1814144
dc.identifier.doi10.1029/2020JA027827
dc.identifier.issn2169-9380
dc.identifier.issn2169-9402
dc.identifier.urihttps://hdl.handle.net/10037/20696
dc.language.isoengen_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.isbasedonGuio, P. & Achilleos, N. (2020). Jovian and Kronian Magnetodisc Field and Guiding Centre Dynamics of Trapped Particles Data [Data set]. Zenodo. <a href=http://doi.org/10.5281/zenodo.3749390>http://doi.org/10.5281/zenodo.3749390</a>.en_US
dc.relation.journalJournal of Geophysical Research (JGR): Space Physics
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2020 The Author(s)en_US
dc.subjectVDP::Mathematics and natural science: 400::Physics: 430::Astrophysics, astronomy: 438en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Fysikk: 430::Astrofysikk, astronomi: 438en_US
dc.titleTrapped Particle Motion In Magnetodisc Fieldsen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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