A cross-section of the solar atmosphere as observed by SUMER on SOHO
![](https://cdn.sci.esa.int/documents/33795/35391/1567220599301-i_screenimage_30116.jpg)
Copyright: SOHO/SUMER (ESA & NASA)
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