Relativistic Electron's Butterfly Pitch Angle Distribution Modulated by Localized Background Magnetic Field Perturbation Driven by Hot Ring Current Ions

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dc.contributor.ORCID0000-0003-2489-3571 (Chen, L)en_US
dc.contributor.authorXiong, Yingen_US
dc.contributor.authorChen, Lunjinen_US
dc.contributor.authorXie, Lunen_US
dc.contributor.authorFu, Suiyanen_US
dc.contributor.authorXia, Zhiyangen_US
dc.contributor.authorPu, Zuyinen_US
dc.contributor.utdAuthorChen, Lunjinen_US
dc.contributor.utdAuthorXia, Zhiyangen_US
dc.date.accessioned2018-09-14T19:20:31Z
dc.date.available2018-09-14T19:20:31Z
dc.date.created2017-05-21
dc.date.issued2017-05-21en_US
dc.description.abstractDayside modulated relativistic electron's butterfly pitch angle distributions (PADs) from ~ 200 keV to 2.6 MeV were observed by Van Allen Probe B at L = 5.3 on 15 November 2013. They were associated with localized magnetic dip driven by hot ring current ion (60-100 keV proton and 60-200 keV helium and oxygen) injections. We reproduce the electron's butterfly PADs at satellite's location using test particle simulation. The simulation results illustrate that a negative radial flux gradient contributes primarily to the formation of the modulated electron's butterfly PADs through inward transport due to the inductive electric field, while deceleration due to the inductive electric field and pitch angle change also makes in part contribution. We suggest that localized magnetic field perturbation, which is a frequent phenomenon in the magnetosphere during magnetic disturbances, is of great importance for creating electron's butterfly PADs in the Earth's radiation belts.en_US
dc.description.departmentSchool of Natural Sciences and Mathematicsen_US
dc.description.sponsorshipNSFCgrants 41274167, 41674164,41474139,and 41421003; NSF grants 1103064 through the Geospace Environment Modeling program; and the AFOSR grant of FA9550-16-1-0344.en_US
dc.identifier.bibliographicCitationXiong, Ying, Lunjin Chen, Lun Xie, Suiyan Fu, et al. 2017. "Relativistic electron's butterfly pitch angle distribution modulated by localized background magnetic field perturbation driven by hot ring current ions." Geophysical Research Letters 44(10), doi:10.1002/2017GL072558 4393-4400.en_US
dc.identifier.issn0094-8276en_US
dc.identifier.issue10en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/6082
dc.identifier.volume44en_US
dc.language.isoenen_US
dc.publisherAmer Geophysical Unionen_US
dc.relation.urihttp://dx.doi.org/10.1002/2017GL072558
dc.rights©2017 American Geophysical Union. All Rights Reserved.en_US
dc.sourceGeophysical Research Letters
dc.subjectRadiation beltsen_US
dc.subjectElectronsen_US
dc.subjectGeomagnetismen_US
dc.subjectMagnetosphereen_US
dc.subjectElectrons--Scatteringen_US
dc.subjectGeologyen_US
dc.titleRelativistic Electron's Butterfly Pitch Angle Distribution Modulated by Localized Background Magnetic Field Perturbation Driven by Hot Ring Current Ionsen_US
dc.type.genrearticleen_US

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