Re: Solar Flares?
"Red dwarfs are far more variable and violent than their more stable, larger cousins. Often they are covered in starspots that can dim their emitted light by up to 40% for months at a time.... At other times, red dwarfs emit gigantic flares that can double their brightness in a matter of minutes" Says https://en.wikipedia.org/wiki/Habitability_of_red_dwarf_systems#Variability