Association of Alfvén waves and proton cyclotron waves with electrostatic bipolar pulses: magnetic hole events observed by Polar
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Association of Alfvén waves and proton cyclotron waves with electrostatic bipolar pulses: magnetic hole events observed by Polar
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 (±14 nT peakto-peak) obliquely propagating proton cyclotron waves (with frequency f ∼0.6 to 0.7fcp), accompanied by electric bipolar pulses (electron holes) and electron heating have been obser...
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Two electron heating events have been identified on 20 May 1996 when Polar was in the polar cap/polar cusp boundary layer. The electron heating events were located within magnetic holes/cavities/bubbles and were accompanied by nonlinear ±14 nT peak-to-peak (f∼0.6 to 0.7 fcp) obliquely propagating proton cyclotron waves. The electrons appear to be heated isotropically. Electric bipolar pulse (el...
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ژورنال
عنوان ژورنال: Nonlinear Processes in Geophysics
سال: 2004
ISSN: 1607-7946
DOI: 10.5194/npg-11-205-2004