Results 81 to 90 of about 18,045 (247)

ULF Wave Modulation of Energetic Electron Precipitation Caused by the Self‐Limiting of Space Radiation: May 2024 Superstorm Observations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract The May 2024 geomagnetic superstorm provided the opportunity to explore how strong wave‐particle interactions affect energetic electron precipitation under intense driving. Using coordinated measurements from a balloon‐borne Timepix‐based X‐ray detector, ground‐based riometers and magnetometers, and Arase satellite observations, we identified ...
L. Olifer, D. Zhou, M. Patel, I. R. Mann, M. K. Hudson, A. W. Degeling, C. O. Heinke, G. R. Sivakoff, A. Kale, S. Kasahara, S. Yokota, K. Keika, T. Hori, T. Mitani, T. Takashima, Y. Kasahara, S. Matsuda, A. Shinbori, A. Matsuoka, M. Teramoto, K. Yamamoto, I. Shinohara, Y. Miyoshi   +22 more
wiley   +1 more source

Electron losses from the radiation belts caused by EMIC waves [PDF]

, 2014
Electromagnetic Ion Cyclotron (EMIC) waves cause electron loss in the radiation belts by resonating with high energy electrons at energies greater than about 500 keV. However, their effectiveness has not been fully quantified.
Fraser, Brian J,, Glauert, Sarah A., Grew, Russell S., Horne, Richard B., Kersten, Tobias, Meredith, Nigel P.   +5 more
core   +1 more source

Calculating Quasi‐Linear Diffusion Rates Using Different Methods to Specify the Wave Spectrum

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract Quasi‐linear diffusion theory is widely used in radiation belt modeling to describe resonant interactions between charged particles and electromagnetic waves. The diffusion rates depend on the wave spectrum and properties of the background plasma.
J. D. Sadler, R. B. Horne, S. A. Glauert, T. A. Daggitt, J. M. Albert, G. Del Zanna   +5 more
wiley   +1 more source

Frequency Chirping of Electromagnetic Ion Cyclotron Waves in Earth's Magnetosphere

Geophysical Research Letters
Electromagnetic ion cyclotron (EMIC) waves are known to exhibit frequency chirping occasionally, contributing to the rapid acceleration and precipitation of energetic particles in the magnetosphere.
Zeyu An, Xin Tao, Fulvio Zonca, Liu Chen
doaj   +1 more source

Mirror Mode Mediated EMIC Wave Generation in the Magnetosheath

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract Electromagnetic ion cyclotron (EMIC) waves and mirror modes (MMs), both driven by ion temperature anisotropy, are commonly observed in planetary magnetosheaths. Conventional explanations for their co‐occurrence are largely based on linear instability theory in proton–electron plasmas, which requires comparable growth rates for the EMIC and MM ...
Yifan Wu, Chen Shi, Xiaoman Liu, Lei Dai, Jinsong Zhao, Xin Tao   +5 more
wiley   +1 more source

On How High-Latitude Chorus Waves Tip the Balance Between Acceleration and Loss of Relativistic Electrons. [PDF]

, 2019
Modeling and observations have shown that energy diffusion by chorus waves is an important source of acceleration of electrons to relativistic energies.
Shprits, Yuri Y, Wang, Dedong
core   +1 more source

Hiss Wave Evolution During Substorms Based on Van Allen Probes Observations

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Hiss waves frequently occur in the plasmasphere or plumes, playing a key role in energetic electron loss in the Earth's inner magnetosphere. While previous studies have linked hiss wave enhancements in the outer plasmasphere (just inside the plasmapause) to electron injections during substorms, their evolution across various substorm phases ...
Xiao‐Chen Shen, Wen Li, Qianli Ma, Nigel P. Meredith, Xiangning Chu, Murong Qin, Luisa Capannolo, Sheng Huang   +7 more
wiley   +1 more source

Private Speech as Social Action [PDF]

, 2015
An important theoretical construct within the Vygotskian sociocultural approach to second language learning is private speech. Within a conversation-analytic framework, an agnostic stance is taken in this paper toward the possible intrapsychological ...
Eric Hauser
core   +2 more sources

Quantitative assessment of Earth’s radiation belt modeling [PDF]

, 2017
The “Quantitative Assessment of Radiation Belt Modeling” focus group was in place at Geospace Environment Modeling from 2014 to 2018. The overarching goals of this focus group were to bring together the current state‐of‐the‐art models for the ...
Albert, J. M., Li, Wen, Morley, S. K., Tu, Weichao   +3 more
core   +1 more source

Abrupt Disappearance of Plasmaspheric Hiss Inside the Magnetic Dip

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Plasmaspheric hiss plays an important role in radiation belt electron dynamics, and its excitation and propagation have long attracted attention. During a substorm, Van Allen Probe B observed the disappearance of plasmaspheric hiss at the magnetic dip, which was driven by the injection of energetic protons.
Yan Zhuang, Chao Yue, Shan Wang, Haimeng Li, Sibo Xu, Xu‐Zhi Zhou, Qiu‐Gang Zong   +6 more
wiley   +1 more source