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Variability and Dynamics of the Outer Atmospheric Layers in the Quiet Solar Network

Curdt, W.; Rybák, J.; Gömöry, P. +2 more

A detailed study of the temporal evolution of the chromospheric He I 584.33 Å and the transition region O V 629.73 Å emission line intensities of quiet supergranular network of the Sun near disk centre observed with Coronal Diagnostic Spectrometer (CDS) is presented. A wavelet analysis of the 1729 s (28.8 min) long temporal series was performed in…

In-Situ Heating in Active Region Loops

Wang, T.; Curdt, W.; Landi, E. +1 more

We report new observational results and insights in the energy release during transient events on sub-flare level in active region coronal loops. Our work is based on multi-temperature observations obtained high above the limb by the SUMER spectrometer on SOHO. We conclude that the energy is impulsively injected into the loop system from one and o…