A new population of ultra‐relativistic electrons in the outer radiation zone

YY Shprits, HJ Allison, D Wang… - Journal of …, 2022 - Wiley Online Library
Abstract Van Allen Probes measurements revealed the presence of the most unusual
structures in the ultra‐relativistic radiation belts. Detailed modeling, analysis of pitch angle …

Differentiating between the leading processes for electron radiation belt acceleration

S Lejosne, HJ Allison, LW Blum, AY Drozdov… - Frontiers in Astronomy …, 2022 - frontiersin.org
Many spacecraft fly within or through a natural and variable particle accelerator powered by
the coupling between the magnetosphere and the solar wind: the Earth's radiation belts …

Competition between the source and loss processes of radiation belt source, seed, and relativistic electrons induced by a magnetic cloud event

Z Zou, P Zuo, B Ni, J Wei, W Zhou, H Huang, Y **e - Physics of Fluids, 2024 - pubs.aip.org
The radiation belt energetic electrons that are trapped by the geomagnetic field are one kind
of space plasma and magnetic fluid. We quantitatively study the competition process …

[HTML][HTML] The challenge to understand the zoo of particle transport regimes during resonant wave-particle interactions for given survey-mode wave spectra

O Allanson, D Ma, A Osmane, JM Albert… - Frontiers in astronomy …, 2024 - frontiersin.org
Quasilinear theories have been shown to well describe a range of transport phenomena in
magnetospheric, space, astrophysical and laboratory plasma “weak turbulence” scenarios. It …

The role of hiss, chorus, and EMIC waves in the modeling of the dynamics of the multi‐MeV radiation belt electrons

AY Drozdov, ME Usanova, MK Hudson… - Journal of …, 2020 - Wiley Online Library
In this study, we performed a series of long‐term and individual storm simulations with and
without hiss, chorus, and electromagnetic ion cyclotron (EMIC) waves. We compared …

[HTML][HTML] Overview, progress and next steps for our understanding of the near-earth space radiation and plasma environment: Science and applications

Y Zheng, I Jun, W Tu, YY Shprits, W Kim… - Advances in Space …, 2024 - Elsevier
Abstract The Near-Earth Space Radiation and Plasma Environment falls within the realm of
G3 Cluster (G3 refers to 'Near-Earth Radiation and Plasma Environment'of the 'Coupled …

Data‐driven discovery of Fokker‐Planck equation for the Earth's radiation belts electrons using Physics‐Informed neural networks

E Camporeale, GJ Wilkie, AY Drozdov… - Journal of Geophysical …, 2022 - Wiley Online Library
We use the framework of Physics‐Informed Neural Network (PINN) to solve the inverse
problem associated with the Fokker‐Planck equation for radiation belts' electron transport …

A missing dusk-side loss process in the terrestrial electron ring current

B Haas, YY Shprits, HJ Allison, M Wutzig, D Wang - Scientific Reports, 2023 - nature.com
The Earth's magnetic field traps charged particles which are transported longitudinally
around Earth, generating a near-circular current, known as the ring current. While the ring …

Nonlinear wave‐particle interaction effects on radiation belt electron dynamics in 9 October 2012 storm

D Kondrashov, AY Drozdov… - Journal of Geophysical …, 2024 - Wiley Online Library
We study the geomagnetic storm of 9 October 2012, where it had been generally accepted
that the resulting prominent outer radiation belt electron acceleration throughout the storm is …

ULF wave modeling, effects, and applications: Accomplishments, recent advances, and future

MD Hartinger, K Takahashi, AY Drozdov… - Frontiers in Astronomy …, 2022 - frontiersin.org
Ultra Low Frequency (ULF) waves play important roles in magnetosphere-ionosphere
coupling, ring current and radiation belt dynamics, and modulation of higher frequency wave …