Results 121 to 130 of about 162 (141)

Determining the global coherence of plasmaspheric hiss waves in the magnetosphere

2020
<p>Plasmaspheric hiss waves is important in the radiation belt. Previous papers have shown that considering the variability of wave parameters will improve the effectiveness of modeling wave-particle interactions in the Radiation Belt, but less is known about how rapidly (and by how much) wave characteristics vary.
Shuai Zhang, Jonathan Rae, Clare Watt, Alexander Degeling, Anmin Tian, Quanqi Shi   +5 more
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On the origin of plasmaspheric hiss: The importance of wave propagation and the plasmapause

Journal of Geophysical Research: Space Physics, 1979
The presence of a turbulent band of ELF hiss throughout the plasmasphere has been modeled by following unducted whistler mode waves from a restricted region of cyclotron resonant growth in the outer plasmasphere. The most unstable waves originate near the equatorial plane within a modest cone of wave normal angles aligned along the ambient magnetic ...
R.M. Thorne, S.R. Church, D.J. Gorney
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Global Survey of Electron Precipitation due to Hiss Waves in the Earth’s Plasmasphere and Plumes

Journal of Geophysical Research: Space Physics, 2021
AbstractWe present a global survey of energetic electron precipitation from the equatorial magnetosphere due to hiss waves in the plasmasphere and plumes. Using Van Allen Probes measurements, we calculate the pitch angle diffusion coefficients at the bounce loss cone, and evaluate the energy spectrum of precipitating electron flux. Our ∼6.5‐year survey
Q. Ma, W. Li, X. ‐J. Zhang, J. Bortnik, X. ‐C. Shen, H. K. Connor, A. J. Boyd, W. S. Kurth, G. B. Hospodarsky, S. G. Claudepierre, G. D. Reeves, H. E. Spence   +11 more
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Whistlers and plasmaspheric hiss: Wave directions and three‐dimensional propagation

Journal of Geophysical Research: Space Physics, 1993
Wave data from the DE 1 satellite showing simultaneously nonducted whistlers and hiss are analyzed to determine wave propagation directions. At L = 3.8 and a geographic latitude of λg = 12°S, the average wave normal directions of discrete whistlers are measured to be ∼51° for fnof;= 4.5 kHz and ∼60° for fnof;= 3.5 kHz, forming a small (<20°) angle ...
A. B. Draganov, U. S. Inan, V. S. Sonwalkar, T. F. Bell   +3 more
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Precipitation Loss of Radiation Belt Electrons by Two‐Band Plasmaspheric Hiss Waves

Journal of Geophysical Research: Space Physics, 2020
AbstractA two‐band plasmaspheric hiss consisting of a low‐frequency band (normal hiss with the frequency below 2 kHz) and a high‐frequency band (locally generated hiss with the frequency up to 10 kHz) was observed on 6 January 2014 by the Van Allen Probes (He et al., 2019, https://doi.org/10.1029/2018GL081578).
Zhaoguo He, Qi Yan, Xiaoping Zhang, Jiang Yu, Yonghui Ma, Yong Cao, Jun Cui   +6 more
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CIMI simulations with newly developed multiparameter chorus and plasmaspheric hiss wave models

Journal of Geophysical Research: Space Physics, 2017
AbstractNumerical simulation studies of the Earth's radiation belts are important to understand the acceleration and loss of energetic electrons. The Comprehensive Inner Magnetosphere‐Ionosphere (CIMI) model considers the effects of the ring current and plasmasphere on the radiation belts to obtain plausible results.
Homayon Aryan, David G. Sibeck, Suk‐Bin Kang, Michael A. Balikhin, Mei‐Ching Fok, Oleksiy Agapitov, Colin M. Komar, Shrikanth G. Kanekal, Tsugunobu Nagai   +8 more
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Hiss Waves Near the South Atlantic Anomaly in the Inner Plasmasphere

Journal of Geophysical Research: Space Physics
Abstract Plasmaspheric hiss is an important electromagnetic wave with a broad frequency range from 10 Hz to several kHz. In this study, we statistically investigate the distribution of the plasmaspheric hiss wave near the South Atlantic Anomaly (SAA) using data from the Van Allen Probes.
Huicong Chen, Hui Zhu, Yingying Zhao, Zhijie Qin, Zhenghao She   +4 more
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Initial survey of the wave distribution functions for plasmaspheric hiss observed by ISEE 1

Journal of Geophysical Research: Space Physics, 1991
Multicomponent ELF/VLF wave data from the ISEE 1 satellite have been analyzed with the aim of identifying the generation mechanism of plasmaspheric hiss, and especially of determining whether it involves wave propagation on cyclic trajectories. The data were taken from four passes of the satellite, of which two were close to the geomagnetic equatorial ...
L. R. O. Storey, F. Lefeuvre, M. Parrot, L. Cairó, R. R. Anderson   +4 more
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Plasmaspheric hiss waves generate a reversed energy spectrum of radiation belt electrons

Nature Physics, 2019
Highly energetic electrons are trapped in the magnetic field of Earth’s radiation belts. The physical mechanisms driving the dynamics of the Van Allen belts can be understood from the electron’s energy spectrum, which is believed to be steeply falling with increasing energy.
H. Zhao, B. Ni, X. Li, D. N. Baker, W. R. Johnston, W. Zhang, Z. Xiang, X. Gu, A. N. Jaynes, S. G. Kanekal, J. B. Blake, S. G. Claudepierre, M. A. Temerin, H. O. Funsten, G. D. Reeves, A. J. Boyd   +15 more
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Precipitation loss of Van Allen radiation belt electrons by hiss waves outside the plasmasphere

Astrophysics and Space Science, 2018
Plasmaspheric hiss waves have been frequently invoked to explain the slow loss of the radiation belt electrons. However, the effect of hiss waves outside the plasmasphere on the radiation belt electrons remains unclear. Here, on the basis of Van Allen Probes observations and quasilinear simulations, we show that the hiss waves outside the plasmasphere ...
Zhaoguo He, Qi Yan, Yonghui Ma, Yong Cao
openaire   +1 more source