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. 2022 Feb 12;127(2):e2021JA030115. doi: 10.1029/2021JA030115

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© 2022 The Johns Hopkins University, Applied Physics Laboratory.

This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Relationship between symmetric waves and electron flux oscillations observed by RBSP A on orbit 2920. (a) Detrended E _ϕ time series. (b) Detrended B _μ time series. (c) Detrended logj _e time series at 13 energies. The pitch angle is fixed at 90°. The vertical dashed lines mark the peaks seen at 33 keV. (d) Detrended logj _e time series at 10 pitch angles. The energy is fixed at 33 keV. (e) Power spectral density (PSD) of the data shown in panels (a) and (b). The vertical dashed line marks the spectral peaks at 5.5 mHz. (f) PSD of the data shown in panel (c), evaluated at 5.5 mHz and plotted as a function of energy. (g) Cross‐phase between E _ϕ and logj _e (red) and between B _μ and logj _e (blue). (h) PSD of the data shown in panel (d), plotted as a function of pitch angle. (i) Cross‐phase between E _ϕ and logj _e (red) and between B _μ and logj _e (blue).