The Variability of Solar X-Ray Flux and Flare Frequency through a Solar Cycle

Solar flares are eruptions on the Sun's surface that emit ultraviolet radiation, x-rays, visible light and coronal mass ejections (CMEs). The intensity and frequency of solar flares have been observed to vary over time. To better understand fluctuations in solar flare intensity and frequency, data for various solar flare properties were obtained from satellites, including Geostationary Operational Environmental Satellite (GOES) and Solar TErrestrial RElations Observatory (STEREO) for 2000-2012. Solar flare statistics were analyzed and found to closely follow the 11-year solar cycle, with some deviations. Total daily x-ray flux, comprised of the background radiation and deviations caused by solar flare activity, was also examined for 2000-2012. The magnitude and frequency of the x-ray flux were observed in relation to annual sunspot count. A correlation to other solar activity parameters was observed. These results may help in the understanding and forecasting of solar flare variability.