Discovery of the Earth's Van Allen radiation belts by instruments flown on Explorer 1 in 1958
was the first major discovery of the Space Age. The observation of distinct inner and outer …

The past decade transformed our observational understanding of energetic particle
processes in near‐Earth space. An unprecedented suite of observational systems was in …

We study the effect of electromagnetic ion cyclotron (EMIC) waves on the loss and pitch
angle scattering of relativistic and ultrarelativistic electrons during the recovery phase of a …

Strong enhancements of outer Van Allen belt electrons have been shown to have a clear
dependence on solar wind speed and on the duration of southward interplanetary magnetic …

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 …

The Exploration of energization and Radiation in Geospace (ERG) Science Center serves
as a hub of the ERG project, providing data files in a common format and developing the …

Local acceleration driven by whistler‐mode chorus waves is fundamentally important for
accelerating seed electron populations to highly relativistic energies in the outer radiation …

We present observations of the radiation belts from the Helium Oxygen Proton Electron and
Magnetic Electron Ion Spectrometer particle detectors on the Van Allen Probes satellites that …

Early observations, indicated that the Earth's Van Allen radiation belts could be separated
into an inner zone dominated by high-energy protons and an outer zone dominated by high …

Pulsating auroras show quasi‐periodic intensity modulations caused by the precipitation of
energetic electrons of the order of tens of keV. It is expected theoretically that not only these …