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Table 1.
Comparison of the different properties of a “classical” AFS and the “extended” AFS.
| Properties | Classical AFS | Extended AFS |
|---|---|---|
| Length | ∼30 Mm (†) | 25–30 Mm |
| Width (system) | ∼20 Mm (†) | ∼20 Mm |
| Width (arch filament) | 1–3 Mm (†) | ∼3 Mm |
| Location | EFR | Active region and surrounding |
| Connectivity | Pores, small-scale flux | MMFs \AMP network magnetic elements |
| Footpoints | Footpoints drifting apart | MMFs move toward other footpoint |
| Loops | Rise from below the photosphere | Ascent starts in photosphere |
| Flux | Emerging flux | decaying flux |
References.
(†) Bruzek (1967, 1969).
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