A new study reports the first observation of a stable auroral red arc evolving into a strong thermal emission velocity enhancement during a geomagnetic storm.
aurorae
Posted inFeatures
Allen Foster: Greasing Telescope Gears During a 7-Month-Long Night
While overwintering in Antarctica, Foster maintains the South Pole Telescope facilities.
Posted inEditors' Highlights
Uncovering the Mysterious STEVE Aurora
Scientists present the first direct observations on the rapid evolution of a bright red auroral arc into a thin white-mauve arc known as STEVE.
Posted inEditors' Highlights
Can Aurora Enhance Radar Monitoring of Arctic Aviation?
Enhanced E-region ionization produced by the aurora can be used to reflect signals from over-the-horizon radars and thus enable those radars to better monitor aviation in Arctic regions.
Posted inResearch Spotlights
Converting Auroral Observations into 3D Structures
Using 1D and 2D data sources as model constraints yields fine-scale insights into real-world aurorae.
Posted inEditors' Vox
Hidden Atmospheric Particles Sculpt Near-Earth Space Environment
Charged particles escape our atmosphere following Earth’s magnetic field and constitute a main source of matter that modulates Sun-Earth interactions.
Posted inResearch Spotlights
Could Low-Altitude Reconnection Power Jupiter’s Polar Aurorae?
Magnetic reconnection events less than 2 Jovian radii above the planet’s cloud tops could explain why Juno has yet to observe a source for Jupiter’s polar aurore.
Posted inResearch Spotlights
Filling the Gaps in the SuperDARN Archive
Researchers present a new pattern-finding technique to better estimate missing data on ionospheric plasma velocities.
Posted inResearch Spotlights
Understanding Aurora Formation with ESA’s Cluster Mission
Over 2 decades, Cluster has shed light on the auroral acceleration region, where parallel electric fields send charged particles on a collision course with the atmosphere.
Posted inEditors' Highlights
The Auroral E-region is a Source for Ionospheric Scintillation
Observations reveal a connection between auroral particle precipitation and scintillation, indicating that the ionospheric E-region is a key source region for phase scintillation at auroral latitudes.