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Back A cross-section of the solar atmosphere as observed by SUMER on SOHO

A cross-section of the solar atmosphere as observed by SUMER on SOHO


Copyright: SOHO/SUMER (ESA & NASA)

A cross-section of the solar atmosphere 40 000 kilometres above the solar surface and 110 000 kilometres wide (shown as a vertical strip) changes over a period of 4 hours (horizontal scale) as observed by SUMER on SOHO in the ultraviolet light from strongly ionised iron atoms (Fe XIX, 1118 angstroms).

Left: brightness.
Right: motion towards us (blue) and away (red).

Rapid injections of energy repeatedly lead to flashes of extremely hot emission and vibrations that quickly die out.

Last Update: 1 September 2019
22-Jan-2026 08:01 UT

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