May 29, 2020 at 4:08 pm #43390
X = X-Ray Flare Class
In solar-terrestrial terms, rank of a flare based on its X-ray energy output. Flares are classified by the order of magnitude of the peak burst intensity (I) measured at the earth in the 1 to 8 angstrom band as follows:
- This reply was modified 4 months ago by Dorothy Donn.