globalchange  > 气候减缓与适应
DOI: 10.1002/2013GL059165
论文题名:
Van Allen Probes observations of direct wave-particle interactions
作者: Fennell J.F.; Roeder J.L.; Kurth W.S.; Henderson M.G.; Larsen B.A.; Hospodarsky G.; Wygant J.R.; Claudepierre J.S.G.; Blake J.B.; Spence H.E.; Clemmons J.H.; Funsten H.O.; Kletzing C.A.; Reeves G.D.
刊名: Geophysical Research Letters
ISSN: 0094-10232
EISSN: 1944-9963
出版年: 2014
卷: 41, 期:6
起始页码: 1869
结束页码: 1875
语种: 英语
英文关键词: inner magnetosphere ; Van Allen Probes ; Wave Particle Interaction
Scopus关键词: Magnetosphere ; Cyclotron frequency ; Electron energies ; Flux enhancement ; Flux gradients ; Inner magnetosphere ; Pitch angle distribution ; Plasma injection ; Wave-particle interactions ; Probes ; electromagnetic wave ; electron ; magnetosphere ; plasma ; probe
英文摘要: Quasiperiodic increases, or "bursts," of 17-26 keV electron fluxes in conjunction with chorus wave bursts were observed following a plasma injection on 13 January 2013. The pitch angle distributions changed during the burst events, evolving from sinN(α) to distributions that formed maxima at α = 75-80°, while fluxes at 90° and <60° remained nearly unchanged. The observations occurred outside of the plasmasphere in the postmidnight region and were observed by both Van Allen Probes. Density, cyclotron frequency, and pitch angle of the peak flux were used to estimate resonant electron energy. The result of ∼15-35 keV is consistent with the energies of the electrons showing the flux enhancements and corresponds to electrons in and above the steep flux gradient that signals the presence of an Alfvén boundary in the plasma. The cause of the quasiperiodic nature (on the order of a few minutes) of the bursts is not understood at this time. © 2014. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84898881432&doi=10.1002%2f2013GL059165&partnerID=40&md5=8c2e37f7d9165a4d85303098be663d40
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7496
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作者单位: Space Science Applications Laboratory, Aerospace Corporation, El Segundo, CA, United States

Recommended Citation:
Fennell J.F.,Roeder J.L.,Kurth W.S.,et al. Van Allen Probes observations of direct wave-particle interactions[J]. Geophysical Research Letters,2014-01-01,41(6).
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