Results 11 to 20 of about 45,378 (347)
The Astrophysical Journal, 2009 The magnetic field of the solar corona has a large-scale dipole character, which maps into the bipolar field in the solar wind. Using standard representations of the coronal field, we show that high-energy ions can be trapped stably in these large-scale closed fields.
S. F. N. Frewen +3 more
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Relativistic surfatron process for Landau resonant electrons in radiation belts [PDF]
Nonlinear Processes in Geophysics, 2014 Recent theoretical studies of the nonlinear wave-particle interactions for relativistic particles have shown that Landau resonant orbits could be efficiently accelerated along the mean background magnetic field for propagation angles θ in close proximity
A. Osmane, A. M. Hamza
doaj +6 more sources
What effect do substorms have on the content of the radiation belts? [PDF]
J Geophys Res Space Phys, 2016 Substorms are fundamental and dynamic processes in the magnetosphere, converting captured solar wind magnetic energy into plasma energy. These substorms have been suggested to be a key driver of energetic electron enhancements in the outer radiation ...
Forsyth C +10 more
europepmc +4 more sources
Radiation Belts and Their Environment [PDF]
, 2021 AbstractThe Van Allen radiation belts of high-energy electrons and ions, mostly protons, are embedded in the Earth’s inner magnetosphere where the geomagnetic field is close to that of a magnetic dipole. Understanding of the belts requires a thorough knowledge of the inner magnetosphere and its dynamics, the coupling of the solar wind to the ...
Hannu Koskinen, Emilia Kilpua
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Reconstruction of the Radiation Belts for Solar Cycles 17–24 (1933–2017)
Space Weather, 2021 We present a reconstruction of the dynamics of the radiation belts from solar cycles 17 to 24 which allows us to study how radiation belt activity has varied between the different solar cycles.
A. A. Saikin +5 more
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OMEP-EOR: A MeV proton flux specification model for electric orbit raising missions
Journal of Space Weather and Space Climate, 2021 Electric Orbit Raising (EOR) for telecommunication satellites significantly reduced on-board fuel mass at the price of extended transfer durations. These relatively long transfers, which usually span a few months, cross large spans of the radiation belts,
Brunet Antoine +4 more
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NARX Neural Network Derivations of the Outer Boundary Radiation Belt Electron Flux
Space Weather, 2022 We present two new empirical models of radiation belt electron flux at geostationary orbit. GOES‐15 measurements of 0.8 MeV electrons were used to train a Nonlinear Autoregressive with Exogenous input (NARX) neural network for both modeling GOES‐15 flux ...
D. A. Landis +7 more
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Using MEPED observations to infer plasma density and chorus intensity in the radiation belts
Frontiers in Astronomy and Space Sciences, 2022 Efforts to model and predict energetic electron fluxes in the radiation belts are highly sensitive to local wave-particle interactions. In this study, we use multi-point measurements of precipitating and trapped electron fluxes to investigate the dynamic
William J. Longley +7 more
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The in-situ exploration of Jupiter’s radiation belts [PDF]
Experimental Astronomy, 2021 AbstractJupiter has the most complex and energetic radiation belts in our Solar System and one of the most challenging space environments to measure and characterize in-depth. Their hazardous environment is also a reason why so many spacecraft avoid flying directly through their most intense regions, thus explaining how Jupiter’s radiation belts have ...
Roussos, Elias +28 more
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Space weather effects on the MAGION-4 and MAGION-5 solar cells [PDF]
Annales Geophysicae, 2005 Data on solar array efficiency measured on board two Czech MAGION micro-satellites between August 1995 and June 2002, during the period of increasing and high solar activity, were used to study the space weather effects on photo-voltaic solar cells. A
P. Tříska +7 more
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