Results 11 to 20 of about 174 (149)

Empirically Estimated Electron Lifetimes in the Earth's Radiation Belts: Comparison With Theory [PDF]

Geophysical Research Letters, 2020
We compute quasilinear diffusion rates due to pitch angle scattering by various mechanisms in the Earth's electron radiation belts. The calculated theoretical lifetimes are compared with observed decay rates, and we find excellent qualitative agreement ...
S. G. Claudepierre, Q. Ma, J. Bortnik, T. P. O'Brien, J. F. Fennell, J. B. Blake   +5 more
doaj   +2 more sources

Identification of Locally Generated Plasmaspheric Hiss

Geophysical Research Letters
In this study, we statistically analyze the wave properties of plasmaspheric hiss using data from the Van Allen Probes. The magnetic power spectral densities of hiss waves exhibit dependence on magnetic local time, geomagnetic activity, and the L‐shell ...
Mingyue Lu, Zhijie Qin, Hui Zhu, Yingying Zhao, Huicong Chen   +4 more
doaj   +2 more sources

A Generation Mechanism of Banded Plasmaspheric Hiss

Geophysical Research Letters
As a unique structure of plasmaspheric hiss emissions, banded hiss waves generally consist of an upper band above ∼200 Hz, a lower band below ∼100 Hz and a power gap in between. However, the generation mechanism of banded hiss remains unclear.
Junhu Dong, Binbin Ni, Zheng Xiang, Zhiyong Wu   +3 more
doaj   +2 more sources

Evolution of dayside chorus into nightside plasmaspheric hiss

Frontiers in Astronomy and Space Sciences
Plasmaspheric hiss is an incoherent, broadband, whistler-mode emission that is found primarily in the Earth’s dense plasmasphere and is believed to be largely responsible for the formation of the slot region between the inner and outer radiation belts ...
Jacob Bortnik, Lunjin Chen, Xiao-Jia Zhang, Xiao-Jia Zhang, Nigel P. Meredith   +4 more
doaj   +4 more sources

Modeling the Leakage of Hiss Waves From the Plasmasphere

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract Plasmaspheric hiss waves can cross the plasmasphere boundary layer (PBL) and leak into the plasmatrough, serving as the main source of exohiss waves. However, it remains unclear how the PBL and wave characteristics affect the leakage process of hiss waves. In this study, we conducted a detailed parametric ray tracing study to model the leakage
Xiangling Ding, Zhaoguo He, Jiang Yu, Jing Wang, Yuguang Ye, Qiugang Zong   +5 more
wiley   +2 more sources

Exohiss wave enhancement following substorm electron injection in the dayside magnetosphere [PDF]

Earth and Planetary Physics, 2018
Exohiss is a low-frequency structureless whistler-mode emission potentially contributing to the precipitation loss of radiation belt electrons outside the plasmasphere.
ZhongLei Gao, ZhenPeng Su, FuLiang Xiao, HuiNan Zheng, YuMing Wang, Shui Wang, H. E. Spence, G. D. Reeves, D. N. Baker, J. B. Blake, H. O. Funsten   +10 more
doaj   +3 more sources

Long Lifetime Hiss Rays in the Disturbed Plasmasphere

Geophysical Research Letters
Plasmaspheric hiss waves are important to shape the Earth’s electron radiation belt. These waves are commonly envisioned to have a long lifetime which allows them to permeate the global plasmasphere from a spatially restricted source.
Zhiyong Wu, Zhenpeng Su, Huinan Zheng, Yuming Wang, Yoshizumi Miyoshi, Iku Shinohara, Ayako Matsuoka, Yoshiya Kasahara, Fuminori Tsuchiya, Atsushi Kumamoto, Shoya Matsuda, Yasumasa Kasaba, Mariko Teramoto, Tomoaki Hori   +13 more
doaj   +2 more sources

Origins of plasmaspheric hiss [PDF]

Journal of Geophysical Research: Space Physics, 2006
Plasmaspheric hiss is an electromagnetic wave emission responsible for electron loss from the radiation belts, particularly in the slot region (2 < L < 3). There are two leading theories for the origin of plasmaspheric hiss: in situ amplification of wave turbulence in space and lightning‐generated whistlers.
Meredith, Nigel P., Horne, Richard B., Clilverd, Mark A., Horsfall, David, Thorne, Richard M., Anderson, Roger R.   +5 more
openaire   +2 more sources

Determining Plasmaspheric Densities from Observations of Plasmaspheric Hiss [PDF]

Journal of Geophysical Research: Space Physics, 2018
AbstractA new method of inferring electron plasma densities inside of the plasmasphere is presented. Utilizing observations of the electric and magnetic field wave power associated with plasmaspheric hiss, coupled with the cold plasma dispersion relation, permits calculation of the plasma density.
D. P. Hartley, C. A. Kletzing, S. De Pascuale, W. S. Kurth, O. Santolík   +4 more
openaire   +1 more source

Variability of Quasilinear Diffusion Coefficients for Plasmaspheric Hiss [PDF]

Journal of Geophysical Research: Space Physics, 2019
AbstractIn the outer radiation belt, the acceleration and loss of high‐energy electrons is largely controlled by wave‐particle interactions. Quasilinear diffusion coefficients are an efficient way to capture the small‐scale physics of wave‐particle interactions due to magnetospheric wave modes such as plasmaspheric hiss.
C. E. J. Watt, H. J. Allison, N. P. Meredith, R. L. Thompson, S. N. Bentley, I. J. Rae, S. A. Glauert, R. B. Horne   +7 more
openaire   +7 more sources