Identify this natural light display caused by the collision of charged particles into the upper atmosphere.
Birkeland currents are a proposed mechanism for the occurrence of these phenomena. Olof Hiorter and Anders Celsius found evidence suggesting that changes in the Earth's magnetic field were directly related to these. Other possible causes for these include Alfvén waves, and striations in these enhance their likeness to curtains. They occur in their namesake zone, located in a 2500 km radius from the Earth's magnetic poles, while most of their observed effect is due to their namesake electrojets. Identify this natural light display caused by the collision of charged particles into the upper atmosphere.
Birkeland currents are a proposed mechanism for the occurrence of these phenomena.
{aurora} borealis (accept {aurora} australis)