Fig. 5.
Relation of the upper atmosphere to the underlying magnetic field for the active region set. Panel a: Spearman correlation of the various emission features to the photospheric magnetic field, Panel b: power-law index from the power-law fit of the relation of emission to magnetic field. The emission features are ordered according to the approximate formation temperature (cf. Table 2). The different colours show the results based on data at different spatial resolutions, here represented by plate scales from 0.5″ to 6″ per pixel. See Sect. 4.1.1.
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