Drift resonant generation of peaked relativistic electron distributions by Pc 5 ULF waves

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dc.contributor.authorKabin, Konstantin
dc.contributor.authorRankin, Robert
dc.contributor.authorOzeke, Louis G.
dc.contributor.authorDegeling, Alex W.
dc.contributor.authorMann, Ian R.
dc.date.accessioned2025-05-01T12:26:53Z
dc.date.available2025-05-01T12:26:53Z
dc.date.issued2008
dc.descriptionThe adiabatic drift-resonant interaction between relativistic, equatorially mirroring electrons and narrowband, Pc 5 ultra low frequency (ULF) waves in the magnetosphere is investigated using a time-dependent magnetohydrodynamic (MHD) wave model. Attention is focused on the effect of a ULF wave packet with finite duration on the equatorially mirroring, relativistic electron phase space density (PSD) profile. It is demonstrated that a burst of narrow band ULF waves can give rise to the growth of strong localized peaks in PSD with L-shell by nondiffusive radial transport. This contrasts with the diffusive \"external source acceleration mechanism'' described by Green and Kivelson (2004), a radial transport mechanism often attributed to ULF waves, which cannot produce peaks in PSD that increase with time. On the basis of this paradigm, observations of locally growing PSD peaks are usually attributed to very low frequency (VLF) wave acceleration by resonant interactions with lower-band chorus (e. g., Horne et al., 2005). However, we show that in situations where large amplitude, narrow bandwidth ULF waves are also observed, these time-limited coherent ULF waves can also generate growing PSD peaks and under such circumstances may offer an alternative explanation.
dc.identifier.doihttps://doi.org/10.7939/R3JM23W72
dc.language.isoen
dc.relationhttp://doi.org/10.1029/2007JA012411
dc.relation.isversionofDegeling, Alex W., Ozeke, Louis G., Rankin, Robert, Mann, Ian R., & Kabin, Konstantin. (2008). Drift resonant generation of peaked relativistic electron distributions by Pc 5 ULF waves. Journal of Geophysical Research: Space Physics, 113(A2), [pp. 1-10]. http://doi.org/10.1029/2007JA012411
dc.rights© 2008 American Geophysical Union. This version of this article is open access and can be downloaded and shared. The original author(s) and source must be cited.
dc.subjectField Line Resonances
dc.subjectOuter Radiation Belt
dc.subjectAcceleration
dc.subjectDiffusion
dc.subjectInner Magnetosphere
dc.subjectPower
dc.titleDrift resonant generation of peaked relativistic electron distributions by Pc 5 ULF waves
dc.typehttp://purl.org/coar/resource_type/c_6501 http://purl.org/coar/version/c_970fb48d4fbd8a85
ual.jupiterAccesshttp://terms.library.ualberta.ca/public

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