Bibliography



Van Allen Probes Bibliography is from August 2012 through September 2021

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Characteristics and Generation of Low-Frequency Magnetosonic Waves Below the Proton Gyrofrequency


AuthorTeng, Shangchun; Li, Wen; Tao, Xin; Ma, Qianli; Shen, Xiaochen;
KeywordsBelow the proton gyrofrequency; Low frequency magnetosonic wave; Van Allen Probes; wave generation; Wave propagation characteristics
AbstractWe report a Van Allen Probes observation of large-amplitude magnetosonic waves with the peak intensity below the proton gyrofrequency (fcp), which may potentially be misinterpreted as electromagnetic ion cyclotron waves. The frequency spacing of the wave harmonic structure suggests that these magnetosonic waves are excited at a distant source region and propagate radially inward. We also conduct a statistical analysis of low-frequency magnetosonic waves below fcp based on the Van Allen Probes data from October 2012 to December 2018. The spatial distribution shows that these low-frequency magnetosonic emissions are dominantly observed inside the plasmasphere from the prenoon to the midnight sector within 5\textdegree of the geomagnetic equator and typically have modest-to-strong wave amplitudes ranging from tens of pT to hundreds of pT. Our study provides insight into understanding the generation and propagation of these low-frequency magnetosonic waves in the Earth\textquoterights inner magnetosphere.
Year of Publication2019
JournalGeophysical Research Letters
Volume46
Number of Pages11652-11660
Section
Date Published10/2019
ISBN
URLhttps://agupubs.onlinelibrary.wiley.com/doi/10.1029/2019GL085372
DOI10.1029/2019GL085372