Results 31 to 40 of about 13,240 (212)

Observations of Radiation Belt Losses Due to Cyclotron Wave-Particle Interactions [PDF]

, 2020
Electron loss to the atmosphere plays a critical role in driving dynamics of the Earths Van Allen radiation belts and slot region. This is a review of atmospheric loss of radiation belt electrons caused by plasma wave scattering via Doppler-shifted ...
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core   +2 more sources

Relativistic Electron Precipitation by EMIC Waves: Importance of Nonlinear Resonant Effects

Geophysical Research Letters, 2022
Relativistic electron losses in Earth's radiation belts are usually attributed to electron resonant scattering by electromagnetic waves. One of the most important wave modes for such scattering is the electromagnetic ion cyclotron (EMIC) mode. Within the
Veronika S. Grach, Anton V. Artemyev, Andrei G. Demekhov, Xiao‐Jia Zhang, Jacob Bortnik, Vassilis Angelopoulos, Rumi Nakamura, Ethan Tsai, Colin Wilkins, Owen W. Roberts   +9 more
doaj   +1 more source

Nonlinear Interaction Between H+ Band and He+ Band EMIC Waves: Van Allen Probe Observations and Hybrid Simulations

Geophysical Research Letters, 2022
Nonlinear theory has predicted that wave‐wave coupling from different band electromagnetic ion cyclotron (EMIC) waves can occur in multiple‐ion plasmas. However, no direct observational evidence has been reported yet.
Dan Deng, Zhigang Yuan, Zuxiang Xue, Shiyong Huang, Zheng Huang, Xiongdong Yu   +5 more
doaj   +1 more source

Electromagnetic ion cyclotron waves in the near‐Earth magnetotail [PDF]

Journal of Geophysical Research: Space Physics, 1999
This study considers the characteristics and generation mechanisms of bursts of polarized transverse electromagnetic waves observed over the frequency range from 50 up to 500 mHz in the near‐Earth magnetotail from ISEE 1 and ISEE 2. Since this range contains the cyclotron frequencies of the ion components found in this region of space, we loosely term ...
C. C. Chaston, Y. D. Hu, B. J. Fraser
openaire   +1 more source

Wave-induced loss of ultra-relativistic electrons in the Van Allen radiation belts. [PDF]

, 2016
The dipole configuration of the Earth's magnetic field allows for the trapping of highly energetic particles, which form the radiation belts. Although significant advances have been made in understanding the acceleration mechanisms in the radiation belts,
Agapitov, Oleksiy V, Aseev, Nikita A, Baker, Daniel N, Drozdov, Alexander Y, Engebretson, Mark J, Kellerman, Adam C, Raita, Tero J, Shprits, Yuri Y, Spasojevic, Maria, Spence, Harlan E, Usanova, Maria E, Zhelavskaya, Irina S, Zhu, Hui   +12 more
core   +1 more source

Ion observations from geosynchronous orbit as a proxy for ion cyclotron wave growth during storm times [PDF]

, 2009
[1] There is still much to be understood about the processes contributing to relativistic electron enhancements and losses in the radiation belts.
Blum, L. W., Gary, S. P., MacDonald, E. A., Spence, Harlan E., Thomsen, M. F.   +4 more
core   +2 more sources

Saturation Characteristics of Parallel EMIC Waves in the Inner Magnetosphere

Geophysical Research Letters, 2019
In this letter, detailed evolution process of parallel electromagnetic ion cyclotron waves in the inner magnetosphere has been investigated through quasilinear theory. A new saturation has been found to occur after the usual first saturation.
Xiongdong Yu, Zhigang Yuan
doaj   +1 more source

The Electromagnetic Ion Cyclotron Instability Affected by the Temperature Anisotropic Electrons in the Inner Magnetosphere

Geophysical Research Letters, 2023
Electromagnetic ion cyclotron (EMIC) instabilities in the inner magnetosphere are investigated with considering the effect of temperature anisotropic electrons.
Zhiqiang Wang, Lingwei Zhang, Jiacheng Zhong   +2 more
doaj   +1 more source

Scattering of Ultra-relativistic Electrons in the Van Allen Radiation Belts Accounting for Hot Plasma Effects. [PDF]

, 2017
Electron flux in the Earth's outer radiation belt is highly variable due to a delicate balance between competing acceleration and loss processes. It has been long recognized that Electromagnetic Ion Cyclotron (EMIC) waves may play a crucial role in the ...
Cao, Xing, Ni, Binbin, Shprits, Yuri Y, Zhelavskaya, Irina S   +3 more
core   +2 more sources

Resonance of relativistic electrons with electromagnetic ion cyclotron waves [PDF]

Geophysical Research Letters, 2015
Relativistic electrons have been thought to more easily resonate with electromagnetic ion cyclotron EMIC waves if the total density is large. We show that, for a particular EMIC mode, this dependence is weak due to the dependence of the wave frequency and wave vector on the density.
R. E. Denton, V. K. Jordanova, J. Bortnik   +2 more
openaire   +1 more source