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| Titel |
Van Allen Probe observations of drift-bounce resonances with Pc 4 pulsations and wave–particle interactions in the pre-midnight inner magnetosphere |
| VerfasserIn |
G. I. Korotova, D. G. Sibeck, K. Tahakashi, L. Dai, H. E. Spence, C. A. Kletzing, J. R. Wygant, J. W. Manweiler, P. S. Moya, K.-J. Hwang, R. J. Redmon |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 33, no. 8 ; Nr. 33, no. 8 (2015-08-05), S.955-964 |
| Datensatznummer |
250121229
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| Publikation (Nr.) |
 copernicus.org/angeo-33-955-2015.pdf |
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| Zusammenfassung |
| We present Van Allen Probe B observations of azimuthally limited,
antisymmetric, poloidal Pc 4 electric and magnetic field pulsations in the
pre-midnight sector of the magnetosphere from 05:40 to 06:00 UT on 1 May
2013. Oscillation periods were similar for the magnetic and electric
fields and proton fluxes. The flux of energetic protons exhibited an energy-dependent response to the pulsations. Energetic proton variations were
anticorrelated at medium and low energies. Although we attribute the
pulsations to a drift-bounce resonance, we demonstrate that the
energy-dependent response of the ion fluxes results from pulsation-associated
velocities sweeping energy-dependent radial ion flux gradients back and
forth past the spacecraft. |
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