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Ultraviolet Coronal Line of Fe XII


Date: 22 December 1996
Satellite: SOHO
Depicts: Coronal Emission
Copyright: SOHO/LASCO (ESA/NASA)

Four images from the EIT instrument, taken in the ultraviolet coronal line of Fe XII, are shown in this image. Cool material (darker shades) ascends from the solar surface (20:32 UT) to form a loop like structure (20:41 UT), which explodes, reaching an altitude of 300 000 km in just 12 minutes. At 20:53 UT the material has accelerated to a velocity of 400 km per second. The cool material pushes a hot coronal shockwave seen as a ring of brighter material.
Last Update: 1 September 2019
21-Jan-2026 19:13 UT

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