Bibliography



Van Allen Probes Bibliography is from August 2012 through September 2021

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Multifrequency compressional magnetic field oscillations and their relation to multiharmonic toroidal mode standing Alfv\ en waves


AuthorTakahashi, Kazue; Waters, Colin; Glassmeier, Karl-Heinz; Kletzing, Craig; Kurth, William; Smith, Charles;
KeywordsCompressional oscillations; Field line resonance; Pc3-Pc4 band; plasmasphere; Van Allen Probes
AbstractThe power spectrum of the compressional component of magnetic fields observed by the Van Allen Probes spacecraft near the magnetospheric equator in the dayside plasmasphere sometimes exhibits regularly spaced multiple peaks at frequencies below 50 mHz. We show by detailed analysis of events observed on two separate days in early 2014 that the frequencies change smoothly with the radial distance of the spacecraft and appear at or very near the frequencies of the odd harmonics of mutiharmonic toroidal mode standing Alfv\ en waves seen in the azimuthal component of the magnetic field. Even though the compressional component had a low amplitude on one of the selected days, its spectral properties are highlighted by computing the ratio of the spectral powers of time series data obtained from two spatially separated Van Allen Probes spacecraft. The spectral similarity of the compressional and azimuthal components suggests that the compressional component contains field line resonance characteristics.
Year of Publication2015
JournalJournal of Geophysical Research: Space Physics
Volume
Number of Pages
Section
Date Published11/2015
ISBN
URLhttp://onlinelibrary.wiley.com/wol1/doi/10.1002/2015JA021780/abstract
DOI10.1002/2015JA021780