On the Interpretation of Ionization in the Lower Ionosphere Occurring on Both Day and Night Side of the Earth within a Few Hours after some Solar Flares

Abstract

Some strong solar flares cause very strong absorption in high geomagnetic latitudes on both day and night sides of the earth. The absorption effect is measurable a few hours after the solar flare outbreak. It is shown that the effect can be interpreted as being caused by a high-energy-ion beam of very small density, emitted from the sun and moving in Störmer orbits.