An elliptical band around each geomagnetic pole ranging from about 75 degrees magnetic latitude at local noon to about 67degrees magnetic latitude at midnight under average conditions. Those locations experience the maximum occurrence of aurorae. The aurora widens to both higher and lower latitudes during the expansion phase of a magnetic substorm. [..]

In solar-terrestrial terms, an oval band around each geomagnetic pole which is the locus of structured aurorae

A ring shaped auroral display around the polar regions where hot plasma sheet particles move along the magnetic field lines and precipitate into the atmosphere.

In solar-terrestrial terms, an oval band around each geomagnetic pole which is the locus of structured aurorae

Zone in which ionized particles are precipitated from the magnetosphere toward the thermosphere. At all times there is one oval in the North and another in the South. It generally ranges from 65° to 75° in latitude, but can spread during magnetic storms or substorms.

In solar-terrestrial terms, an oval band around each geomagnetic pole which is the locus of structured aurorae

the region in which aurora appears at the same time, corresponding to a "ring of fire" around the magnetic pole, often observed by satellites. It resembles a circle centered a few hundred ki [..]