A new Polaris is about to erupt in the sky

Cyclicity of flares is quite understandable. The fact that T CrB is a double star system. Its constituent stars rotate in a close orbit – the dwarf star absorbs the gas actively emitted by the red giant. This continues until a volume of gas sufficient for a powerful thermonuclear explosion is accumulated. These explosions, occurring at intervals of 80 years, Earth stargazers and observe in the form of a bright flash.