Results 11 to 20 of about 109,612 (300)

Does Uranus' Asymmetric Magnetic Field Produce a Relatively Weak Proton Radiation Belt?

open access: yesGeophysical Research Letters, 2022
Since the Voyager 2 flyby in 1986 the radiation belts of Uranus have presented a problem for physicists. The observations indicate the electron radiation belt is far more intense than the proton radiation belt, and while the electron intensities are ...
A. Masters, C. Ioannou, N. Rayns
doaj   +1 more source

Relativistic Electron Model in the Outer Radiation Belt Using a Neural Network Approach

open access: yesSpace Weather, 2021
We present a machine‐learning‐based model of relativistic electron fluxes >1.8 MeV using a neural network approach in the Earth's outer radiation belt.
Xiangning Chu   +12 more
doaj   +1 more source

Electron loss rates from the outer radiation belt caused by the filling of the outer plasmasphere: The calm before the storm [PDF]

open access: yes, 2009
Measurements from seven spacecraft in geosynchronous orbit are analyzed to determine the decay rate of the number density of the outer electron radiation belt prior to the onset of high-speed-stream-driven geomagnetic storms.
Borovsky, J. E., Denton, Michael H.
core   +1 more source

Quantifying the relative contributions of substorm injections and chorus waves to the rapid outward extension of electron radiation belt [PDF]

open access: yes, 2014
We study the rapid outward extension of the electron radiation belt on a timescale of several hours during three events observed by Radiation Belt Storm Probes and Time History of Events and Macroscale Interactions during Substorms satellites and ...
Baker, D. N.   +8 more
core   +3 more sources

Superfast precipitation of energetic electrons in the radiation belts of the Earth

open access: yesNature Communications, 2022
Energetic electron densities in the radiation belt increases during geomagnetic storms. Here, the authors show oblique whistler mode waves enhance electron losses and create strong fluxes of about 100 keV electrons precipitating into the atmosphere, that
Xiao-Jia Zhang   +12 more
doaj   +1 more source

New Perspective on Phase Space Density Analysis for Outer Radiation Belt Enhancements: The Influence of MeV Electron Injections

open access: yesGeophysical Research Letters, 2023
Observation of growing phase space density (PSD) peak in the outer electron radiation belt has been considered evidence for local wave‐driven acceleration as a primary cause of radiation belt enhancement.
H.‐J. Kim   +5 more
doaj   +1 more source

Scattering of Ultra-relativistic Electrons in the Van Allen Radiation Belts Accounting for Hot Plasma Effects. [PDF]

open access: yes, 2017
Electron flux in the Earth's outer radiation belt is highly variable due to a delicate balance between competing acceleration and loss processes. It has been long recognized that Electromagnetic Ion Cyclotron (EMIC) waves may play a crucial role in the ...
Cao, Xing   +3 more
core   +2 more sources

Constraining the Location of the Outer Boundary of Earth's Outer Radiation Belt

open access: yesEarth and Space Science, 2021
Characterizing the location of the outer boundary of the outer radiation belt is a key aspect of improving radiation belt models and helps to constrain our understanding of the mechanisms by which the source and seed electron populations are transported ...
T. Bloch   +4 more
doaj   +1 more source

Nonstorm time dynamics of electron radiation belts observed by the Van Allen Probes [PDF]

open access: yes, 2014
Storm time electron radiation belt dynamics have been widely investigated for many years. Here we present a rarely reported nonstorm time event of electron radiation belt evolution observed by the Van Allen Probes during 21-24 February 2013.
Albert   +55 more
core   +3 more sources

Ganymede's Radiation Cavity and Radiation Belts

open access: yesGeophysical Research Letters, 2022
Abstract While planetary radiation belts are all embedded within the low energy solar wind, Ganymede is in the unique situation of being surrounded by the energetic particles of Jupiter's magnetosphere. Here we study Ganymede's environment based the recent flyby of Juno, as well as through reanalysis of past measurements from the ...
P. Kollmann   +6 more
openaire   +1 more source

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