The temperature within this region rises rapidly from about 20,000 degrees Celcius to about 1 million degrees, and this region's emissions are dominated by ultraviolet signals from triply ionized carbon, oxygen, and silicon, rather than hydrogen.
Observations conducted by the TRACE mission have revealed that this area is home to large cool loops which change on timescales of about 1 minute. A consequence of the separation of atoms and ions across magnetic field lines in this area due to the first ionization potential effect is the fractionation, or relative abundance, of magnesium, silicon, and iron. This region is home to frequent, small bursts known    as "explosive events" which may be the result of conversion of magnetic to kinetic energy via magnetic reconnection. The temperature within this region rises rapidly from about 20,000 degrees Celcius to about 1 million degrees, and this region's emissions are dominated by ultraviolet signals from triply ionized carbon, oxygen, and silicon, rather than hydrogen. For 10 points, identify this region lying between the corona and the chromosphere of the sun.
Observations conducted by the TRACE mission have revealed that this area is home to large cool loops which change on timescales of about 1 minute.
solar transition region