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

dc.contributor.author	Lakhina, G.S.
dc.contributor.author	Tsurutani, B.T.
dc.contributor.author	Pickettd, J.
dc.date.accessioned	2015-08-25T07:29:58Z
dc.date.accessioned	2021-02-12T09:27:34Z
dc.date.available	2015-08-25T07:29:58Z
dc.date.available	2021-02-12T09:27:34Z
dc.date.issued	2004
dc.identifier.citation	Nonlinear Processes in Geophysics, v.11, p.205-213, 2004, doi: 10.5194/npg-11-205-2004	en_US
dc.identifier.uri	http://localhost:8080/xmlui/handle/123456789/277
dc.description.abstract	Two 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.language.iso	en	en_US
dc.subject	Magnetic holes	en_US
dc.subject	Alfvén waves	en_US
dc.subject	Proton cyclotron waves	en_US
dc.title	Association of Alfvén waves and proton cyclotron waves with electrostatic bipolar pulses: magnetic hole events observed by Polar	en_US
dc.type	Article	en_US
dc.identifier.accession	090766