Tag Archives: class

Classification of Solar Flares

Solar Flares are classified according to the amount of energy emitted by them per unit area. The classification is based on the energy released in the 1-8 Angstrom band.

Typically we have 4 major classes designated by letters B,C,M and X, with X being the most powerful of flares. Each of these letter classes is further subdivided into 9 subdivisions. So a X class flare can exist from X1 to X9, with X9 being the strongest flare.

Class Flare Power (W/sq.m)
B 1E-6
C 1E-6 to 1E-5
M 1E-5 to 1E-4
X > 1E-4