The Sun emitted another mid-level (M8.1) flare from the same active region (AR 2673) on Sept. 8. Solar flares are sudden outbursts of energy that dramatically enhance the X-ray region of the solar spectrum. The Geostationary Operational Environment Satellites (GOES) classifies flares based on their X-ray emission peaks (A, B, C, M or X). On each GOES satellite there are two X-Ray Sensors (XRS) which measure X-ray brightness of flares in the wavelength range of 0.5 to 3 Angstroms (black line) and 1 to 8 Angstroms (red line). You can see the measurements below.The imagery/data dropouts are due to satellite eclipses.
Sources:http://www.swpc.noaa.gov/
https://www.nasa.gov/feature/goddard/2017/active-region-on-sun-continues-to-emits-solar-flares
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