Results 171 to 180 of about 835 (185)

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
openaire   +1 more source

Global Empirical Models of Wave Amplitudes and Normal Angles of Banded Plasmaspheric Hiss Obtained From Van Allen Probes Observations

Journal of Geophysical Research: Space Physics, 2023
AbstractThe unique banded structure of plasmaspheric hiss with an upper band above ∼200 Hz and a lower band below ∼150 Hz has been recently reported. Based on observations from the twin Van Allen Probes from 15 September 2012 to 30 June 2019, we statistically investigate the global distributions of amplitude and power‐weighted wave normal angle (WNA ...
Junhu Dong, Zheng Xiang, Binbin Ni, Yangxizi Liu   +3 more
openaire   +1 more source

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
openaire   +1 more source

Low-frequency hiss-like whistler-mode waves generated by nonlinear three-wave interactions outside the plasmasphere

Physics of Plasmas, 2019
Whistler-mode waves play an important role in the inner magnetospheric particle dynamics. The direction and efficiency of energy transfer between waves and particles strongly depend on the wave frequency distribution characteristics. Recent observations have drawn attention to the low-frequency whistler-mode chorus waves below 0.1 times the equatorial ...
Zhonglei Gao, Zhengyang Zou, Pingbing Zuo, Yi Wang, Zhaoguo He, Fengsi Wei   +5 more
openaire   +1 more source

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

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
openaire   +1 more source

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
openaire   +1 more source

Multi‐Parameter Chorus and Plasmaspheric Hiss Wave Models

Journal of Geophysical Research: Space Physics, 2021
Homayon Aryan, Jacob Bortnik, Nigel Meredith   +2 more
exaly  

The unexpected origin of plasmaspheric hiss from discrete chorus emissions

Nature, 2008
Jacob Bortnik
exaly  

Global-scale coherence modulation of radiation-belt electron loss from plasmaspheric hiss

Nature, 2015
George B Hospodarsky, J R Wygant, Cynthia A Cattell   +2 more
exaly