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EUV Spectral Variability and Non-Equilibrium Ionisation in the 'Quiet' Sun

Harrison, R. A.; Lanzafame, A. C.; Brooks, D. H. +2 more

Recent spectroscopic observations by the Solar and Heliospheric Observatory (SOHO) have revealed the dynamic nature of even the 'quiet' Sun. Spectral variability data clearly show that dynamics in the solar upper atmosphere take place on timescales shorter than those of ionisation relaxation. Accuracy in the interpretation of diagnostic spectral d…