Results 31 to 40 of about 994 (229)

Characteristics of magnetospherically reflected chorus waves observed by CLUSTER [PDF]

Annales Geophysicae, 2004
Abstract. Chorus emissions are often observed by the STAFF spectrum analyser on board the 4 satellites of CLUSTER. This instrument provides the cross spectral matrix of three magnetic and two electric field components. Dedicated software processes this spectral matrix in order to determine the propagation characteristic of these chorus waves ...
Parrot, Michel, Santolik, O., Gurnett, D., Pickett, J.S., Cornilleau-Wehrlin, N.   +4 more
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On the numerical modelling of VLF chorus dynamical spectra [PDF]

Annales Geophysicae, 2009
This paper presents a study of the use of a one-dimensional Vlasov Hybrid Simulation (VHS) computer code to simulate the dynamical spectra (i.e. frequency versus time spectrograms) of ELF/VLF chorus signals (from ~a fraction to ~10 kHz).
D. Nunn, O. Santolik, O. Santolik, M. Rycroft, V. Trakhtengerts, V. Trakhtengerts   +5 more
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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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Chorus wave-normal statistics in the Earth's radiation belts from ray tracing technique [PDF]

Annales Geophysicae, 2012
Discrete ELF/VLF (Extremely Low Frequency/Very Low Frequency) chorus emissions are one of the most intense electromagnetic plasma waves observed in radiation belts and in the outer terrestrial magnetosphere.
H. Breuillard, Y. Zaliznyak, Y. Zaliznyak, V. Krasnoselskikh, O. Agapitov, O. Agapitov, O. Agapitov, A. Artemyev, A. Artemyev, G. Rolland   +9 more
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Fine structure of large‐amplitude chorus wave packets

Geophysical Research Letters, 2014
AbstractWhistler mode chorus waves in the outer Van Allen belt can have consequences for acceleration of relativistic electrons through wave‐particle interactions. New multicomponent waveform measurements have been collected by the Van Allen Probes Electric and Magnetic Field Instrument Suite and Integrated Science's Waves instrument.
Santolík, O., C. A. Kletzing, W. S. Kurth, G. B. Hospodarsky, and S. R. Bounds   +5 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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Chorus source region localization in the Earth's outer magnetosphere using THEMIS measurements [PDF]

Annales Geophysicae, 2010
Discrete ELF/VLF chorus emissions, the most intense electromagnetic plasma waves observed in the Earth's radiation belts and outer magnetosphere, are thought to propagate roughly along magnetic field lines from a localized source region near the ...
O. Agapitov, O. Agapitov, V. Krasnoselskikh, Yu. Zaliznyak, Yu. Zaliznyak, V. Angelopoulos, O. Le Contel, G. Rolland   +7 more
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Using MEPED observations to infer plasma density and chorus intensity in the radiation belts

Frontiers in Astronomy and Space Sciences, 2022
Efforts to model and predict energetic electron fluxes in the radiation belts are highly sensitive to local wave-particle interactions. In this study, we use multi-point measurements of precipitating and trapped electron fluxes to investigate the dynamic
William J. Longley, Anthony A. Chan, Allison N. Jaynes, Scot R. Elkington, Joshua M. Pettit, Johnathan P. J. Ross, Sarah A. Glauert, Richard B. Horne   +7 more
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New results of investigations of whistler-mode chorus emissions [PDF]

Nonlinear Processes in Geophysics, 2008
This review summarizes selected recent results obtained during investigation of whistler-mode chorus emissions in the Earth's magnetosphere. Special attention is paid to results published during the last five years, with a focus on the results of ...
O. Santolík
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