Results 11 to 20 of about 2,961 (224)
Modeling of the cold electron plasma density for radiation belt physics
Frontiers in Astronomy and Space Sciences, 2023 This review focusses strictly on existing plasma density models, including ionospheric source models, empirical density models, physics-based and machine-learning density models.
J.-F. Ripoll +12 more
doaj +1 more source
On How High-Latitude Chorus Waves Tip the Balance Between Acceleration and Loss of Relativistic Electrons. [PDF]
Geophys Res Lett, 2019 Modeling and observations have shown that energy diffusion by chorus waves is an important source of acceleration of electrons to relativistic energies.
Wang D, Shprits YY.
europepmc +3 more sources
A new perspective and explanation for the formation of plasmaspheric shoulder structures [PDF]
Annales Geophysicae, 2021 Over the hours of 05:00–09:00 UT on 8 June 2001, the extreme ultraviolet (EUV) instrument on board the IMAGE satellite observed a shoulder-like formation in the morning sector and a post-noon plume-like structure.
H. Zhang, G. Peng, C. Shen, Y. Wu
doaj +1 more source
Sawtooth and dune auroras simultaneously driven by waves around the plasmapause
Earth and Planetary Physics, 2023 The dune aurora, at a scale of ~30 kilometers, was reported recently using ground camera. The small-scale dune aurora occurs on the duskside and exhibits a monochromatic oscillation in the auroral emission, implying fundamental energy conversions ...
Fei He +12 more
doaj +1 more source
Wave-induced loss of ultra-relativistic electrons in the Van Allen radiation belts. [PDF]
Nat Commun, 2016 The dipole configuration of the Earth's magnetic field allows for the trapping of highly energetic particles, which form the radiation belts. Although significant advances have been made in understanding the acceleration mechanisms in the radiation belts,
Shprits YY +12 more
europepmc +3 more sources
Plasmapause Surface Waves Triggered by Substorms [PDF]
Journal of Geophysical Research: Space Physics, 2022 AbstractIn this study, we present in‐situ measurement on board Van Allen Probes showing that surface wave can cause oscillations of the plasmapause and modulate hiss and electron cyclotron harmonic (ECH) waves. Plasmapause surface wave (PSW) in Ps6 band was observed during an intense substorm on 16 July 2017, accompanied with quasi‐periodic emissions ...
Y. X. Hao +6 more
openaire +2 more sources
On structuring of the plasmapause [PDF]
Geophysical Research Letters, 2012 Irregularities have been observed on the plasmapause by radio wave techniques and by in situ density, electric field, and magnetic field measurements. We review these data sets and show that Alfvén waves are present and could lead to the observed fluctuations through mixing of the gradient in plasma density at the plasmapause.
M. C. Kelley, J. Franz, A. Jacobson
openaire +1 more source
Formation of the oxygen torus in the inner magnetosphere: Van Allen Probes observations [PDF]
, 2015 We study the formation process of an oxygen torus during the 12–15 November 2012 magnetic storm, using the magnetic field and plasma wave data obtained by Van Allen Probes.
De Pascuale, S. +11 more
core +3 more sources
Journal of Space Weather and Space Climate, 2014 The plasmapause is a highly dynamic boundary between different magnetospheric particle populations and convection regimes. Some of the most important space weather processes involve wave-particle interactions in this region, but wave properties may also ...
Menk Frederick +7 more
doaj +1 more source
Whistler propagation in the plasmapause [PDF]
Journal of Geophysical Research: Space Physics, 2013 Variations in plasma density and magnetic field have a strong effect on the propagation of very low frequency waves in the whistler mode. Numerous studies have established that field‐aligned density irregularities (sometimes called ducts) symmetrical relative their axis can effectively guide whistlers along the ambient magnetic field. In this paper, we
J.R. Woodroffe, A.V. Streltsov
openaire +1 more source