Trapped ions discovered at midlatitudes can have energies exceeding 100 megaelectron volts per nucleon. Their detection adds to our understanding of the powerful radiation environment around Jupiter.
Energetic particles: trapped
Posted inResearch Spotlights
Spacecraft Reveal New Details of Magnetic Reconnection
Energetic electrons are accelerated directly by magnetic reconnections and can act as tracers of large-scale magnetic field conditions.
Posted inResearch Spotlights
Terrestrial Radio Signals May Suppress High-Energy Electrons
Naval radio signals may cause the formation of a barrier observed during geomagnetic storms that is seemingly impenetrable by relativistic electrons.
Posted inEditors' Highlights
A New Angle on the Earth’s Radiation Belts
A new empirical model of energetic electrons from Van Allen Probes data includes pitch angle analysis, revealing insights about radiation belt energization and loss processes.
Posted inResearch Spotlights
The Curious Case of the Halloween Ghost Electrons
When solar storms pounded Earth during Halloween in 2003, scientists were eager to measure their effects. But new research shows one satellite was seeing "ghost" particles that probably weren't real.
Posted inResearch Spotlights
Spacecraft Records Rising-Tone Magnetosonic Waves
A rising tone in wave frequencies suggests a complicated, nonlinear series of interactions between electromagnetic sound waves and protons near the magnetic equator.