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The Sun's dynamic extended corona observed in extreme ultraviolet

Seaton, Daniel B.; Caspi, Amir; Slater, Gregory +6 more

The `middle corona' is a critical transition between the highly disparate physical regimes of the lower and outer solar coronae. Nonetheless, it remains poorly understood due to the difficulty of observing this faint region (1.5-3 R_⊙). New observations from the Solar Ultraviolet Imager of a Geostationary Operational Environmental Satell…