Results 51 to 60 of about 782 (172)
Magnetic Tilt Effect on Externally Driven Electromagnetic Ion Cyclotron (EMIC) Waves
Geophysical Research Letters, 2023 We examine coupling of fluctuations in the solar wind with electromagnetic ion cyclotron (EMIC) waves in the magnetosphere using an advanced full‐wave simulation code, Petra‐M. Dipole tilt dramatically affects the coupling process. While very little wave
Eun‐Hwa Kim, Jay R. Johnson
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Instability and propagation of EMIC waves in the magnetosphere by a kappa distribution [PDF]
Journal of Geophysical Research: Space Physics, 2012 Electromagnetic ion cyclotron (EMIC) waves are excited near the magnetic equator by anisotropic ring current ions with energies near a few tens of keV. We investigate the instability and the path‐integrated gain of EMIC waves during wave propagation.
Qinghua Zhou +3 more
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A Statistical Study of Warm Plasma Cloak Particles Using Van Allen Probe Data
Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.Abstract The Warm Plasma Cloak (WPC) consists of ions in the inner magnetosphere with energies between 10 eV and 1 keV and showing a bidirectional pitch angle distribution of particles. These particles play an important role in wave–particle interactions and in controlling the dayside reconnection rate at the magnetopause.
Bhairavi Apte +2 more
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Generation and Characteristics of Unusual High Frequency EMIC Waves [PDF]
Geophysical Research Letters, 2019 AbstractWe report unusual Electromagnetic Ion Cyclotron (EMIC) waves with a very narrow frequency bandwidth, closely following and approaching the proton gyrofrequency. One interesting case analysis shows that magnetosonic waves, anisotropic suprathermal proton distributions, and high frequency EMIC waves are closely related.
S. Teng +7 more
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Journal of Advanced Nursing, Volume 82, Issue 7, Page 7441-7452, July 2026.ABSTRACT Aims To explore how the restricted visitation policy impacts family members' visitation experiences and perceptions in an adult intensive care unit (ICU). Design Focused ethnography. Methods Data collection included 39 observation sessions (totalling 65.3 h), 19 semi‐structured interviews with family members, and document analysis of policies ...
Lian Zhu +3 more
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Geophysical Research Letters, 2018 A typical case of electromagnetic ion cyclotron (EMIC) emissions with both He+ band and O+ band waves was observed by Van Allen Probe A on 14 July 2014.
Xiongdong Yu +6 more
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Geophysical Research Letters, 2023 Electromagnetic ion cyclotron (EMIC) waves can drive radiation belt depletion and Low‐Earth Orbit satellites can detect the resulting electron and proton precipitation.
L. Capannolo +8 more
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Earth and Planetary Physics, 2022 We report a representative concurrent event of four wave modes at L ≈ 5.0, including electrostatic electron cyclotron harmonic (ECH) waves, exohiss, magnetosonic (MS) waves, and electromagnetic ion cyclotron (EMIC) waves, based on the observations from ...
YiWen Zhao +10 more
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Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.Abstract Using Van Allen Probes data (2013–2015), we report that highly oblique chorus waves frequently occur in low‐density regions where fpe/fce≈3 ${f}_{\text{pe}}/{f}_{\text{ce}}\approx 3$. These waves exhibit an electric‐to‐magnetic energy ratio PE/c2PB>0.5 $\sqrt{{P}_{\mathrm{E}}/{c}^{2}{P}_{\mathrm{B}}} > 0.5$, much higher than the typical <0.1 ${
Lixian Yang +10 more
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Frequency Chirping of Electromagnetic Ion Cyclotron Waves in Earth's Magnetosphere
Geophysical Research LettersElectromagnetic 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
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