Results 31 to 40 of about 173 (148)

A first approach to model the low-frequency wave activity in the plasmasphere [PDF]

Annales Geophysicae, 2002
A comprehensive empirical model of waves is developed in the objective to simulate wave-particle interactions involved in the loss and acceleration of radiation belt electrons.
R. André, R. André, R. André, F. Lefeuvre, F. Simonet, U. S. Inan   +5 more
doaj   +1 more source

Early-Time Non-Equilibrium Pitch Angle Diffusion of Electrons by Whistler-Mode Hiss in a Plasmaspheric Plume Associated with BARREL Precipitation

Frontiers in Astronomy and Space Sciences, 2021
In August 2015, the Balloon Array for Radiation belt Relativistic Electron Losses (BARREL) observed precipitation of energetic (<200 keV) electrons magnetically conjugate to a region of dense cold plasma as measured by the twin Van Allen Probes ...
R. M. Millan, J.-F. Ripoll, J.-F. Ripoll, O. Santolík, O. Santolík, W. S. Kurth   +5 more
doaj   +1 more source

An empirical model of the global distribution of plasmaspheric hiss based on Van Allen Probes EMFISIS measurements

Earth and Planetary Physics, 2020
Using wave measurements from the EMFISIS instrument onboard Van Allen Probes, we investigate statistically the spatial distributions of the intensity of plasmaspheric hiss waves.
JingZhi Wang, Qi Zhu, XuDong Gu, Song Fu, JianGuang Guo, XiaoXin Zhang, Juan Yi, YingJie Guo, BinBin Ni, Zheng Xiang   +9 more
doaj   +1 more source

A theoretical verification of intensity of plasmaspheric ELF hiss emissions: theory versus GEOS-1 observations [PDF]

Annales Geophysicae, 1997
An attempt is made to confirm the generation mechanism of plasmaspheric ELF hiss emissions observed aboard GEOS-1 satellite in the equatorial region both at small and large wave normal angles by calculating their magnetic field intensities in terms of
R. Prakash, R. P. Singh, R. C. Awasthi, D. P. Singh   +3 more
doaj   +1 more source

Prompt responses of magnetospheric whistler-mode waves to solar wind dynamic pressure pulses

Frontiers in Astronomy and Space Sciences, 2023
Whistler-mode waves play a critical role in shaping the Earth’s radiation belts, and their spatiotemporal distribution is vital for forecasting and modeling geospace weather.
Nigang Liu, Nigang Liu, Zhenpeng Su, Zhenpeng Su, Zhenpeng Su   +4 more
doaj   +1 more source

First results of low frequency electromagnetic wave detector of TC-2/Double Star program [PDF]

Annales Geophysicae, 2005
LFEW is a low frequency electromagnetic wave detector mounted on TC-2, which can measure the magnetic fluctuation of low frequency electromagnetic waves. The frequency range is 8 Hz to 10 kHz.
J. B. Cao, Z. X. Liu, J. Y. Yang, J. Y. Yang, C. X. Yian, Z. G. Wang, X. H. Zhang, S. R. Wang, S. W. Chen, W. Bian, W. Dong, Z. G. Zhang, F. L. Hua, L. Zhou, N. Cornilleau-Wehrlin, B. de Laporte, M. Parrot, H. Alleyne, K. Yearby, O. Santolík, O. Santolík, C. Mazelle   +21 more
doaj   +1 more source

Plasmaspheric hiss amplification mechanisms identified [PDF]

Eos, Transactions American Geophysical Union, 2012
Over the past 3 decades the hypothesis that chorus waves—a form of highintensity plasma wave often found in the outer magnetosphere—evolve into plasmaspheric hiss in the plasmasphere has grown in prominence. Plasmaspheric hiss is a form of low‐frequency radio wave that is often observed in the regions within the plasmasphere that have high plasma ...
openaire   +1 more source

Survey of ELF-VLF plasma waves in outer radiation belt observed by Cluster STAFF-SA experiment [PDF]

Annales Geophysicae, 2008
Various types of plasma waves have profound effects on acceleration and scattering of radiation belt particles. For the purposes of radiation belt modeling it is necessary to know statistical distributions of plasma wave parameters.
D. Pokhotelov, F. Lefeuvre, R. B. Horne, N. Cornilleau-Wehrlin, N. Cornilleau-Wehrlin   +4 more
doaj   +1 more source

Effect of plasma density on diffusion rates due to wave particle interactions with chorus and plasmaspheric hiss: extreme event analysis [PDF]

Annales Geophysicae, 2014
Wave particle interactions play an important role in controlling the dynamics of the radiation belts. The purpose of this study is to estimate how variations in the plasma density can affect diffusion rates resulting from interactions between chorus ...
A. Sicard-Piet, D. Boscher, R. B. Horne, N. P. Meredith, V. Maget   +4 more
doaj   +1 more source

Triggered Plasmaspheric Hiss: Rising Tone Structures

Geophysical Research Letters, 2019
AbstractIn this study, a rare hiss event observed by Van Allen Probe is reported and the possible generation is investigated based on wave and plasma measurements. The results suggest that the normal hiss (from 0.05fce to 0.5fce) with dominantly equatorward Poynting fluxes is locally generated by plasma sheet electrons via cyclotron instability.
Hui Zhu, Xu Liu, Lunjin Chen
openaire   +1 more source