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http://library.iigm.res.in:8080/xmlui/handle/123456789/277| Title: | Association of Alfvén waves and proton cyclotron waves with electrostatic bipolar pulses: magnetic hole events observed by Polar |
| Authors: | Lakhina, G.S. Tsurutani, B.T. Pickettd, J. |
| Keywords: | Magnetic holes Alfvén waves Proton cyclotron waves |
| Issue Date: | 2004 |
| Citation: | Nonlinear Processes in Geophysics, v.11, p.205-213, 2004, doi: 10.5194/npg-11-205-2004 |
| 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. |
| URI: | http://localhost:8080/xmlui/handle/123456789/277 |
| Appears in Collections: | UAS_Reprints |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Lakhina_NonlProcGeophys_2004_205-213.pdf | 727.93 kB | Adobe PDF | View/Open |
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