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.
aurorae
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.
Posted inEditors' Highlights
Dune Aurora Explained by Satellite-Ground Studies
Spacecraft observations support the mechanism for explaining auroral dunes observed from the ground by citizen scientists.
Posted inNews
A Space Hurricane Spotted Above the Polar Cap
Researchers have identified a high-latitude phenomenon that looks remarkably like a tropospheric hurricane, with spinning arms of plasma and a shower of electrons.
Posted inEditors' Highlights
Dawn Storms at Jupiter
Juno spacecraft observations provide the first global description of dawn storms in Jupiter’s aurorae, from their initiation to their end.
Posted inNews
Auroral “Dunes” Light Up Earth’s Atmosphere
The auroral feature, first spotted by amateur astronomers in 2015, likely traces high-altitude atmospheric waves.
Posted inEditors' Highlights
Citizen Scientists Observe Mysterious Green Streaks Below STEVE
Citizen scientists provided images of sub-auroral STEVE (Strong Thermal Emission Velocity Enhancements) showing fine-scale green features with narrow streaks propagating poleward toward STEVE.
Posted inEditors' Highlights
First Model of Meteoric Nickel in the Upper Atmosphere
A layer of nickel of cosmic origin, which exists between 80 and 110 km high in Earth’s atmosphere, has been modeled for the first time, including dynamics and complex neutral and ion chemistry.