EARTH SCIENCE > SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SOLAR X-RAY EMISSIONS
Solar X-Ray emissions can consist of X-Ray background flux or X-Ray bursts. A
daily average background X-ray flux is in the 1 to 8 angstrom range. It is a
midday minimum designed to reduce the effects of flares. X-Ray burstsare a
temporary enhancement of the X-ray emission of the sun. The time-intensity
profile of soft X-ray bursts is similar to that of the H-Alpha profile of an
associated flare. Bursts last from minutes to several hours.
On-Line Glossary of Solar-Terrestrial Terms from the NOAA Space Environment