Results 51 to 60 of about 835 (185)

Source of the low-altitude hiss in the ionosphere [PDF]

, 2017
We analyze the propagation properties of low-altitude hiss emission in the ionosphere observed by DEMETER (Detection of Electromagnetic Emissions Transmitted from Earthquake Regions).
Chen, Lunjin, Hajoš, Mychajlo, Hanzelka, Miroslav, Heelis, Roderick, Horne, Richard B., Parrot, Michel, Santolík, Ondrej, Zheng, Liheng, Zhima, Zeren   +8 more
core   +4 more sources

Enhanced Radiation Levels at Aviation Altitudes and Their Relationship to Plasma Waves in the Inner Magnetosphere

Space Weather, 2023
It is believed that galactic cosmic rays and solar energetic particles are the two major sources of ionizing radiation. However, the radiation source may also be due to relativistic electrons that are associated with precipitation from the Van Allen ...
Homayon Aryan, Jacob Bortnik, W. Kent Tobiska, Piyush Mehta, Rashmi Siddalingappa   +4 more
doaj   +1 more source

Observational evidence of the nonlinear wave growth theory of plasmaspheric hiss

Geophysical Research Letters, 2016
AbstractWe test the recently developed nonlinear wave growth theory of plasmaspheric hiss against discrete rising tone elements of hiss emissions observed by the Van Allen Probes. From the phase variation of the waveforms processed by bandpass filters, we calculate the instantaneous frequencies and wave amplitudes.
Satoko Nakamura, Yoshiharu Omura, Danny Summers, Craig A. Kletzing   +3 more
openaire   +1 more source

Radial diffusion simulations of the 20 September 2007 radiation belt dropout [PDF]

Annales Geophysicae, 2014
This is a study of a dropout of radiation belt electrons, associated with an isolated solar wind density pulse on 20 September 2007, as seen by the solid-state telescopes (SST) detectors on THEMIS (Time History of Events and Macroscale Interactions ...
J. Albert
doaj   +1 more source

Using the cold plasma dispersion relation and whistler mode waves to quantify the antenna sheath impedance of the Van Allen Probes EFW instrument [PDF]

, 2016
Cold plasma theory and parallel wave propagation are often assumed when approximating the whistler mode magnetic field wave power from electric field observations.
Boehm, Burtis, Chen, Fu, Green, Green, Gurnett, Hartley, Hartley, Hartley, Horne, Horne, Kletzing, Kurth, Lam, Li, Li, Lyons, Lyons, Meredith, Meredith, Meredith, Meredith, Meredith, Morley, Ni, Onsager, Pederson, Reeves, Reeves, Santolik, Santolík, Santolík, Santolík, Santolík, Shprits, Stix, Summers, Summers, Summers, Summers, Summers, Thorne, Thorne, Tsurutani, Tsurutani, Turner, Turner, Watt, Wygant   +49 more
core   +1 more source

Distinct Formation and Evolution Characteristics of Outer Radiation Belt Electron Butterfly Pitch Angle Distributions Observed by Van Allen Probes

Geophysical Research Letters, 2020
Using Van Allen Probes pitch angle‐resolved electron flux data, we report intriguing events of electron butterfly pitch angle distributions (PADs) at L > ~5.5 on the nightside with distinct durations, i.e., about 9 hr for the 28–29 April 2013 event and ...
Binbin Ni, Ling Yan, Song Fu, Xudong Gu, Xing Cao, Zheng Xiang, Yuannong Zhang   +6 more
doaj   +1 more source

A case study of electron precipitation fluxes due to plasmaspheric hiss [PDF]

, 2015
We find that during a large geomagnetic storm in October 2011 the trapped fluxes of >30, >100, and >300 keV outer radiation belt electrons were enhanced at L=3-4 during the storm main phase.
Brundell, James B., Clilverd, Mark A., Duthie, Roger, Hardman, Rachael, Holzworth, Robert H., Macusova, Eva, Mann, Ian R., Milling, David K., Rodger, Craig J.   +8 more
core   +1 more source

Wave-particle interactions in the outer radiation belts [PDF]

, 2015
Data from the Van Allen Probes have provided the first extensive evidence of non-linear (as opposed to quasi-linear) wave-particle interactions in space with the associated rapid (fraction of a bounce period) electron acceleration to hundreds of keV by ...
Agapitov, O. V., Artemyev, A. V., Krasnoselskikh, V. V., Mourenas, D., Mozer, F. S.   +4 more
core   +3 more sources

Quasi‐Trapped Zebra Stripes: Radial Transport Driven by Dual‐Pulse Electric Fields

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Energetic electron spectra in Earth's inner radiation belt often exhibit regular stripe‐like features, known as “zebra stripes,” which are typically attributed to the drift motion of stably‐trapped electrons disturbed by electric field perturbations.
Ziyang Wang, Ying Liu, Qiugang Zong, Yixin Sun, Hong Zou, Yuguang Ye   +5 more
wiley   +1 more source

Simulating the Earth’s radiation belts: internal acceleration and continuous losses to the magnetopause [PDF]

, 2014
In the Earth's radiation belts the flux of relativistic electrons is highly variable, sometimes changing by orders of magnitude within a few hours. Since energetic electrons can damage satellites it is important to understand the processes driving these ...
Glauert, Sarah A., Horne, Richard B., Meredith, Nigel P.   +2 more
core   +1 more source