Specifically, the disturbances in the auroral region
were larger in scale (about 1-40 kilometers in diameter) than those over the Arctic polar cap (about 1-8 kilometers in diameter).
Cassini encountered the auroral region
at a distance of 247 millionilometers from Saturn's cloud tops (about 4 times Saturn's radius).
2) Jovian Auroral Distributions Experiment (JADE): reveals the plasma structure in Jupiter's magnetosphere and auroral region
by measuring the distribution of low-energy electrons and the velocity and composition of ions.
6-hour component originates from the northern auroral region
Radio & Plasma Waves Measures spectral energy distribution of Wave Sensor radio and plasma waves in auroral regions
Known as electrojets, these high-speed winds may explain how energy from the auroral regions
spreads around the planet.
Time-lapse images taken by the Hubble Space Telescope's imaging spectrograph reveal that within the auroral regions
, "flares come up for 10 seconds and become as bright as anything else and then go away to almost nothing," Clarke told SCIENCE NEWS.
Its auroral regions
brighten and contract as the solar-wind pressure increases.
The researchers think the oxygen atoms in the polar caps and the adjacent auroral regions
of the earth are given an extra boost by charged particles, originally from the solar wind, which are trapped by and travel down the earth's magnetic field lines toward the poles.
In this scenario, incoming oxygen ions from Jupiter's auroral regions
play a role.