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.
plasmas
Posted inResearch Spotlights
Understanding the Effects of Anthropogenic Space Weather
A large plasma hole generated by the vertical launch of the Formosat-5 satellite created temporary navigating and positioning errors of up to 1 meter, according to a new study.
Posted inEditors' Vox
The Big Picture in Geospace
A NASA stereo-imaging mission called TWINS continues to push the boundaries of what we know about the region of space close to Earth.
Posted inResearch Spotlights
Tracing the Path of Gas Atoms from Earth to the Final Frontier
Scientists capture the first complete image of Earth’s luminous geocorona and prove its ecliptic north–south symmetry.
Posted inEditors' Highlights
New Observations of Mysterious Radar Echoes
Exploring the relationship between solar extreme ultraviolet radiation flux and 150-km radar echoes.
Posted inEditors' Highlights
The “Magnetic-less” Magnetotail Boundary
Most boundaries in space are governed by magnetic fields, but not far behind the Earth, where the field change across the magnetopause plays very little role in the pressure balance relationship.
Posted inAGU News
Mary K. Hudson Receives 2017 John Adam Fleming Medal
Mary K. Hudson was awarded the 2017 John Adam Fleming Medal at the American Geophysical Union Fall Meeting Honors Ceremony, held on 13 December 2017 in New Orleans, La. The medal is for “original research and technical leadership in geomagnetism, atmospheric electricity, aeronomy, space physics, and/or related sciences.”
Posted inEditors' Highlights
New Insight into Ionospheric Feedback Instability
A new modeling effort could change our understanding of auroral arc formation.
Posted inResearch Spotlights
Jets of Ionospheric Cold Plasma Discovered at the Magnetopause
The lower-energy particles may play a larger role in magnetic reconnection than previously believed, influencing space weather near Earth.
Posted inResearch Spotlights
How Earth’s Outer Radiation Belts Lose Their Electrons
A new analysis of three space storms reveals the mechanisms of particle loss from the Van Allen belts.