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Van Allen Probes Bibliography is from August 2012 through September 2021
Found 4 entries in the Bibliography.
Showing entries from 1 through 4
Rapid Precipitation of Relativistic Electron by EMIC Rising-Tone Emissions Observed by the Van Allen Probes
On 23 February 2014, Van Allen Probes sensors observed quite strong electromagnetic ion cyclotron (EMIC) waves in the outer dayside magnetosphere. The maximum amplitude was more than 14 nT, comparable to 7\% of the magnitude of the ambient magnetic field. The EMIC waves consisted of a series of coherent rising tone emissions. Rising tones are excited sporadically by energetic protons. At the same time, the probes detected drastic fluctuations in fluxes of MeV electrons. It was found that the electron fluxes decreased by more ...
Nakamura, S.; Omura, Y.; Kletzing, C.; Baker, D.;
Published by: Journal of Geophysical Research: Space Physics Published on: May-08-2020
YEAR: 2019   DOI: 10.1029/2019JA026772
EMIC waves; Magnetosphere; microburst; nonlinear; Radiation belt; Van Allen Probes; Wave-particle interaction
Fine structure of whistler-mode hiss in plasmaspheric plumes observed by the Van Allen Probes
We survey 3 years (2013-2015) of data from the Van Allen Probes related to plasmaspheric plume crossing events. We detect 194 plume crossing events, and we find that 97\% of the plumes are accompanied by VLF hiss emissions. The plumes are mainly detected on the duskside or dayside. Careful examination of the hiss spectra reveals that all hiss emissions consist of obvious fine structure. Application of a band pass filter reveals that the fine structure is consistent with the occurrence of discrete wave packets. The hiss data ...
Nakamura, S.; Omura, Y.; Summers, D.;
Published by: Journal of Geophysical Research: Space Physics Published on: 10/2018
YEAR: 2018   DOI: 10.1029/2018JA025803
fine structure; hiss; nonlinear; plasmaspheric plume; Van Allen Probes
Nonlinear Bounce Resonances between Magnetosonic Waves and Equatorially Mirroring Electrons
Equatorially mirroring energetic electrons pose an interesting scientific problem, since they generally cannot resonate with any known plasma waves and hence cannot be scattered down to lower pitch angles. Observationally it is well known that the fluxof these equatorial particles does not simply continue to build up indefinitely, and so a mechanism must necessarily exist that transports these particles from a equatorial pitch angle of 90 degrees down to lower values. However this mechanism has not been uniquely identified y ...
Chen, Lunjin; Maldonado, Armando; Bortnik, Jacob; Thorne, Richard; Li, Jinxing; Dai, Lei; Zhan, Xiaoya;
Published by: Journal of Geophysical Research: Space Physics Published on: 06/2015
YEAR: 2015   DOI: 10.1002/2015JA021174
bounce resonance; equatorioal noise; magnetosonic waves; nonlinear; Radiation belt; wave particle interaction
Statistical results describing the bandwidth and coherence coefficient of whistler mode waves using THEMIS waveform data
The bandwidths and coherence coefficients of lower band whistler mode waves are analyzed using Time History of Events and Macroscale Interactions during Substorms (THEMIS) waveform data for rising tones, falling tones, and hiss-like emissions separately. We also evaluate their dependences on the spatial location, electron density, the ratio of plasma frequency to local electron gyrofrequency (fpe/fce), and the wave amplitude. Our results show that the bandwidth normalized by the local electron gyrofrequency (fce) of rising a ...
Gao, X.; Li, W.; Thorne, R.; Bortnik, J.; Angelopoulos, V.; Lu, Q.; Tao, X.; Wang, S.;
Published by: Journal of Geophysical Research: Space Physics Published on: 11/2014
YEAR: 2014   DOI: 10.1002/2014JA020158
bandwidth; coherence coefficient; nonlinear; quasi-linear; THEMIS; whistler mode waves