Results 11 to 20 of about 114,782 (336)

UBER v1.0: a universal kinetic equation solver for radiation belts [PDF]

open access: yesGeoscientific Model Development, 2021
Recent proceedings in radiation belt studies have proposed new requirements for numerical methods to solve the kinetic equations involved. In this article, we present a numerical solver that can solve the general form of the radiation belt Fokker–Planck ...
L. Zheng   +6 more
doaj   +1 more source

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

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst   +8 more
wiley  

+5 more sources

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

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

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

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

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