This sequence of extreme ultraviolet images shows brightening and expansion of coronal loops accompanied by a violent ejection of material away from the Sun's surface. A bubble of hot, ionized gas or plasma as well as cooler, dark filamentary material, erupts from the solar corona and travels through space at a high speed. The cross-shaped pattern at the peak of the loop brightening is an artifact of the instrument response rather than a feature on the Sun. The dark region at the center of the activity is a sunspot . This sequence of extreme ultraviolet images shows several concentrations of dark filamentary material dancing along the solar limb, against a background of brightening coronal loops.
Filamentary material is cool plasma that is supported by magnetic fields above the photosphere.
They appear dark when seen against the bright solar disk. Filaments such as this one that are seen on the limb are called prominences . The bright crosses seen at the peak of the flare are an artifact of the instrument response not a solar phenomenon. The violent release of energy causes many of the loops to oscillate as well as producing or activating many post flare loops not visible before the event. This sequence of extreme ultraviolet images shows the dynamic interactions of neighboring active regions .