Association of Alfven waves and proton cyclotron waves with electrostatic bipolar pulses: magnetic hole events observed by Polar

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dc.contributor.authorLakhina, G. S.en_US
dc.contributor.authorTsurutani, B. T.en_US
dc.contributor.authorPickettd, J.en_US
dc.date.accessioned2026-07-24T06:35:52Z
dc.date.issued2004
dc.description.abstractTwo magnetic hole events observed by Polar on 20 May 1996 when it was in the polar cap/polar cusp boundary layer are studied. Low-frequency waves, consisting of nonlinear Alfvén waves and large amplitude (±14nT peak-to-peak) obliquely propagating proton cyclotron waves (with frequency f~0.6 to 0.7 fcp), accompanied by electric bipolar pulses (electron holes) and electron heating have been observed located within magnetic holes. It is shown that low-frequency waves can provide free energy to drive some high frequency instabilities which saturate by trapping electrons, thus, leading to the generation of electron holes.en_US
dc.identifier.citationNonlinear Processes in Geophysics, v.11, p.205-213, 2004, doi: 10.5194/npg-11-205-2004en_US
dc.identifier.other90766
dc.identifier.urihttps://repository.iigm.res.in/handle/123456789/2257
dc.languageenen_US
dc.subjectMagnetic holesen_US
dc.subjectAlfven wavesen_US
dc.subjectProton cyclotron wavesen_US
dc.titleAssociation of Alfven waves and proton cyclotron waves with electrostatic bipolar pulses: magnetic hole events observed by Polaren_US
dc.typeArticleen_US

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