Particle dynamics in the Earth's radiation belts: Review of current research and open questions

JF Ripoll, SG Claudepierre… - Journal of …, 2020 - Wiley Online Library
The past decade transformed our observational understanding of energetic particle
processes in near‐Earth space. An unprecedented suite of observational systems was in …

Space weather effects in the Earth's radiation belts

DN Baker, PJ Erickson, JF Fennell, JC Foster… - Space Science …, 2018 - Springer
The first major scientific discovery of the Space Age was that the Earth is enshrouded in
toroids, or belts, of very high-energy magnetically trapped charged particles. Early …

Gyroresonant wave-particle interactions with chorus waves during extreme depletions of plasma density in the Van Allen radiation belts

HJ Allison, YY Shprits, IS Zhelavskaya, D Wang… - Science …, 2021 - science.org
The Van Allen Probes mission provides unique measurements of the most energetic
radiation belt electrons at ultrarelativistic energies. Simultaneous observations of plasma …

Quantitative evaluation of radial diffusion and local acceleration processes during GEM challenge events

Q Ma, W Li, J Bortnik, RM Thorne, X Chu… - Journal of …, 2018 - Wiley Online Library
We simulate the radiation belt electron flux enhancements during selected Geospace
Environment Modeling (GEM) challenge events to quantitatively compare the major …

The electric and magnetic fields instrument suite and integrated science (EMFISIS): Science, data, and usage best practices

CA Kletzing, J Bortnik, G Hospodarsky, WS Kurth… - Space science …, 2023 - Springer
We provide a post-mission assessment of the science and data from the Electric and
Magnetic Field Instrument Suite and Integrated Science (EMFISIS) investigation on the …

Ultra-low-frequency wave-driven diffusion of radiation belt relativistic electrons

Z Su, H Zhu, F Xiao, QG Zong, XZ Zhou… - Nature …, 2015 - nature.com
Van Allen radiation belts are typically two zones of energetic particles encircling the Earth
separated by the slot region. How the outer radiation belt electrons are accelerated to …

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 …

On how high‐latitude chorus waves tip the balance between acceleration and loss of relativistic electrons

D Wang, YY Shprits - Geophysical Research Letters, 2019 - Wiley Online Library
Modeling and observations have shown that energy diffusion by chorus waves is an
important source of acceleration of electrons to relativistic energies. By performing long‐term …

Opening the black box of the radiation belt machine learning model

D Ma, J Bortnik, X Chu, SG Claudepierre, Q Ma… - Space …, 2023 - Wiley Online Library
Abstract Many Machine Learning (ML) systems, especially deep neural networks, are
fundamentally regarded as black boxes since it is difficult to fully grasp how they function …

Observations and simulations of dropout events and flux decays in October 2013: Comparing MEO equatorial with LEO polar orbit

V Pierrard, JF Ripoll, G Cunningham… - Journal of …, 2021 - Wiley Online Library
Abstract We compare ESA PROBA‐V observations of electron flux at LEO with those from
the NASA Van Allen Probes mostly at MEO for October 2013. Dropouts are visible at all …