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Related papers: Simulations of the inner magnetospheric energetic …

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We present a set of neural network models that reproduce the dynamics of electron fluxes in the range of 50 keV $\sim$ 1 MeV in the outer radiation belt. The Outer Radiation belt Electron Neural net model for Medium energy…

Using the observations of the EPT (Energetic Particle Telescope) onboard the satellite PROBA-V we study the dynamics of inner and outer belt electrons from 500 keV to 8 MeV during quiet periods and geomagnetic storms. This high…

Space Physics · Physics 2019-05-01 Viviane Pierrard , Graciela Lopez Rosson , Edith Botek

The magnetosphere sustained by the rotation of the Earth's liquid iron core traps charged particles, mostly electrons and protons, into structures referred to as the Van Allen belts. These radiation belts, in which the density of charged…

Accurate forecasting of megaelectron-volt (MeV) electrons in the outer Earth's radiation belt, which can pose significant risks to satellites, is essential for risk mitigation and spacecraft operations. We develop a machine-learning-based…

Instrumentation and Methods for Astrophysics · Physics 2026-05-18 Rungployphan Kieokaew , Ryad Guezzi , François Ginisty , Hadrien Mariaccia

We present the first three-dimensional MHD radio galaxy simulations that explicitly model transport of relativistic electrons, including diffusive acceleration at shocks as well as radiative and adiabatic cooling in smooth flows. We discuss…

Astrophysics · Physics 2009-11-06 I. L. Tregillis , T. W. Jones , Dongsu Ryu

We have developed an economical, effective numerical scheme for cosmic-ray transport suitable for treatment of electrons up to a few hundreds of GeV in multidimensional simulations of radio galaxies. The method follows the electron…

Astrophysics · Physics 2009-10-31 T. W. Jones , I. L. Tregillis , Dongsu Ryu

Using our new 3-D relativistic electromagnetic particle (REMP) code parallelized with MPI, we investigated long-term particle acceleration associated with a relativistic electron-positron jet propagating in an unmagnetized ambient…

High Energy Astrophysical Phenomena · Physics 2014-11-20 K. -I. Nishikawa , J. Niemiec , M. Medvedev , B. Zhang , P. Hardee , Y. Mizuno , A. Nordlund , J. Frederiksen , H. Sol , M. Pohl , D. H. Hartmann , J. F. Fishman

Purpose: The subject of research is the spatio-temporal charged particles in the Earth's magnetosphere outside the South Atlantic magnetic Anomaly during the 11-year cycle of solar activity minimum. The work aims at searching for and…

Space Physics · Physics 2025-07-02 O. V. Dudnik , O. V. Yakovlev

The planet Mercury possesses a small but highly dynamic magnetosphere in which the role and dynamics of electrons are still largely unknown. We aim at modeling the global dynamics of solar wind electrons impinging on Mercury's…

We simulate, using a particle-in-cell code, the chain of acceleration processes at work during the Compton-based interaction of a dilute electron-ion plasma with an extreme-intensity, incoherent gamma-ray flux with a photon density several…

Plasma Physics · Physics 2023-09-04 J. C. Faure , D. Tordeux , L. Gremillet , M. Lemoine

A 2.5-dimensional particle-in-cell code is used to investigate the propagation of a large-amplitude, superluminal, nearly transverse electromagnetic (TEM) wave in a relativistically streaming electron-positron plasma with and without a…

Astrophysics · Physics 2009-11-13 O. Skjaeraasen , A. Melatos , A. Spitkovsky

Energy equipartition is a powerful theoretical tool for understanding astrophysical plasmas. It is invoked, for example, to measure magnetic fields in the interstellar medium (ISM), as evidence for small-scale turbulent dynamo action, and,…

We report a first principles study of the coupled evolution of energetic ions, background majority ions, electrons and electromagnetic fields in magnetised plasma during the linear phase of the lower hybrid drift instability. A…

Plasma Physics · Physics 2015-05-27 J W S Cook , R O Dendy , S C Chapman

To enhance the accuracy of power load forecasting in wind farms, this study introduces an advanced combined forecasting method that integrates Variational Mode Decomposition (VMD) with an Improved Particle Swarm Optimization (IPSO)…

Machine Learning · Computer Science 2024-12-17 Qiang Xie

In this paper, electromagnetic emissions produced by a beam-plasma system are investigated using particle-in-cell simulations for the particular case when the typical transverse size of both 100 keV electron beam and produced plasma channel…

Plasma Physics · Physics 2019-07-24 V. V. Annenkov , I. V. Timofeev , E. P. Volchok

A low pressure discharge sustained in molecular hydrogen with help of the electron cyclotron resonance heating at a frequency of 2.45 GHz is simulated using a fully electromagnetic implicit charge- and energy-conserving…

The effect of driving frequency in the range of 13.56 MHz to 73 MHz on electron energy distribution and electron heating modes in a 50 mTorr capacitively coupled argon plasma discharge is studied using 1D-3V particle-in-cell simulations.…

The magnetospheric substorm, which plays a crucial role in flux and energy transport across Earth's magnetosphere, features the formation of a thin, elongated current sheet in the magnetotail during its growth phase. This phase is…

The photon flux resulting from high-energy electron beam interactions with high field systems, such as in the upcoming FACET-II experiments at SLAC National Accelerator Laboratory, may give deep insight into the electron beam's underlying…

Accelerator Physics · Physics 2023-09-26 M. Yadav , M. Oruganti , S. Zhang , B. Naranjo , G. Andonian , Y. Zhuang , Ö. Apsimon , C. P. Welsch , J. B. Rosenzweig

We present a new empirical model to predict solar energetic particle (SEP) event-integrated and peak intensity spectra between 10 and 130 MeV at 1 AU, based on multi-point spacecraft measurements from the Solar TErrestrial RElations…

Solar and Stellar Astrophysics · Physics 2021-02-24 Alessandro Bruno , Ian G. Richardson
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