Results 31 to 40 of about 829 (220)

Nonlinear Wave Growth Analysis of Chorus Emissions Modulated by ULF Waves

Geophysical Research Letters, 2022
AbstractWe present Van Allen Probes observations of periodic chorus wave emissions in the troughs of compressional ultralow frequency (ULF) waves. During this event, the spectral gap of chorus waves gradually widens as the spacecraft moves from the equatorial source region towards higher latitudes.
Li Li, Yoshiharu Omura, Xu‐Zhi Zhou, Qiu‐Gang Zong, Robert Rankin, Chao Yue, Sui‐Yan Fu   +6 more
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On the origin of falling-tone chorus elements in Earth's inner magnetosphere [PDF]

Annales Geophysicae, 2014
Generation of extremely/very low frequency (ELF/VLF) chorus waves in Earth's inner magnetosphere has received increased attention recently because of their significance for radiation belt dynamics.
H. Breuillard, O. Agapitov, O. Agapitov, A. Artemyev, A. Artemyev, V. Krasnoselskikh, O. Le Contel, C. M. Cully, V. Angelopoulos, Y. Zaliznyak, G. Rolland   +10 more
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Unifying Models of Chorus Wave Frequency Chirping

Eos, 2021
A new model of chorus wave electron interaction attempts to explain how observations can support two seemingly contradictory mechanisms of frequency chirping.
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Bounce‐averaged diffusion coefficients for field‐aligned chorus waves [PDF]

Journal of Geophysical Research: Space Physics, 2006
Whistler mode chorus emissions in the Earth's magnetosphere extend from the plasmapause to the boundary of trapping. Knowledge of the pitch angle and energy scattering rates is essential for accurate radiation belt modeling. Scattering rates, which are used as an input for radiation belt codes, should be evaluated dynamically and should account for the
Shprits, Yuri Y., Thorne, Richard M., Horne, Richard B., Summers, Danny   +3 more
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Ducted Chorus Waves Cause Sub‐Relativistic and Relativistic Electron Microbursts

Geophysical Research Letters, 2022
AbstractDuring magnetospheric storms, radiation belt electrons are produced and then removed by collisions with the lower atmosphere on varying timescales. An efficient loss process is microbursts, strong, transient precipitation of electrons over a wide energy range, from tens of keV to sub‐relativistic and relativistic energies (100s keV and above ...
Lunjin Chen, Xiao‐Jia Zhang, Anton Artemyev, Vassilis Angelopoulos, Ethan Tsai, Colin Wilkins, Richard B. Horne   +6 more
openaire   +2 more sources

Nonlinear Coupling Between Whistler‐Mode Chorus and Electron Cyclotron Harmonic Waves in the Magnetosphere

Geophysical Research Letters, 2018
Electromagnetic whistler‐mode chorus and electrostatic electron cyclotron harmonic (ECH) waves can contribute significantly to auroral electron precipitation and radiation belt electron acceleration.
Zhonglei Gao, Zhenpeng Su, Fuliang Xiao, Danny Summers, Nigang Liu, Huinan Zheng, Yuming Wang, Fengsi Wei, Shui Wang   +8 more
doaj   +1 more source

Excitation of extremely low-frequency chorus emissions: The role of background plasma density

Earth and Planetary Physics, 2019
Low-frequency chorus emissions have recently attracted much attention due to the suggestion that they may play important roles in the dynamics of the Van Allen Belts.
XiongDong Yu, ZhiGang Yuan, ShiYong Huang, Fei Yao, Zheng Qiao, John R. Wygant, Herbert O. Funsten   +6 more
doaj   +1 more source

Field-aligned chorus wave spectral power in Earth's outer radiation belt [PDF]

Annales Geophysicae, 2015
Chorus-type whistler waves are one of the most intense electromagnetic waves generated naturally in the magnetosphere. These waves have a substantial impact on the radiation belt dynamics as they are thought to contribute to electron acceleration and ...
H. Breuillard, H. Breuillard, O. Agapitov, O. Agapitov, A. Artemyev, E. A. Kronberg, S. E. Haaland, P. W. Daly, V. V. Krasnoselskikh, D. Boscher, S. Bourdarie, Y. Zaliznyak, G. Rolland   +12 more
doaj   +1 more source

Proton aurora and relativistic electron microbursts scattered by electromagnetic ion cyclotron waves

Frontiers in Astronomy and Space Sciences, 2022
Charged particle precipitation from Earth’s magnetosphere results in stunning displays of the aurora and energy transfer into the atmosphere. Some of this precipitation is caused by wave-particle interactions.
Mykhaylo Shumko, Mykhaylo Shumko, Bea Gallardo-Lacourt, Bea Gallardo-Lacourt, Alexa Jean Halford, Lauren W. Blum, Jun Liang, Yoshizumi Miyoshi, Keisuke Hosokawa, Eric Donovan, Ian R. Mann, Kyle Murphy, Emma L. Spanswick, J. Bernard Blake, Mark D. Looper, D. Megan Gillies   +15 more
doaj   +1 more source

Electron diffusion by chorus waves: effects of latitude-dependent wave power spectrum

Frontiers in Astronomy and Space Sciences, 2023
In the present paper, we investigate the effects of latitude-dependent wave power spectrum on the interactions of chorus with electrons. Great errors in evaluating the electron diffusion coefficients and the resultant electron temporal evolutions are introduced by the widely adopted latitudinally constant model, compared with the latitudinally varying ...
Jiang Yu, Jing Wang, Zhaoguo He, Zhaoguo He, Zhaoguo He, Zuzheng Chen, Liuyuan Li, Jun Cui, Jun Cui, Jinbin Cao   +9 more
openaire   +2 more sources