On the one hand, the aurora is related to the large-scale interaction of the Earth's high-altitude atmosphere and geomagnetic field. On the other hand, because the solar jet emits high-speed charged ion streams, these particles are often referred to as solar wind. The essential conditions for the formation of the aurora are the atmosphere, magnetic field and solar wind.
Which of the following options belongs to the formation principle of auroras according to the above definition?
Aurora is an atmospheric luminescence phenomenon caused by the solar wind entering the upper atmosphere gathering over the polar regions of the geomagnetic region