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Authors: Su Zhenpeng, Wang Geng, Liu Nigang, Zheng Huinan, Wang Yuming, et al.
Title: Direct observation of generation and propagation of magnetosonic waves following substorm injection
Abstract: Magnetosonic whistler mode waves play an important role in the radiation belt electron dynamics. Previous theory has suggested that these waves are excited by the ring distributions of hot protons and can propagate radially and azimuthally over a broad spatial range. However, because of the challenging requirements on satellite locations and data-processing techniques, this theory was difficult to validate directly. Here we present some experimental tests of the theory on the basis of Van Allen Probes observations of magnetosonic waves following substorm injections. At higher L-shells with significant substorm injections, the discrete magnetosonic emission lines started approximately at the proton gyrofrequency harmonics, qualitatively consistent with the prediction of linear proton Bernst. . .
Date: 07/2018 Publisher: Geophysical Research Letters DOI: 10.1002/2017GL074362 Available at:
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