NASA NTRS · 19770060058
A long-lived coronal arch system observed in X-rays
Abstract
A large long-lived soft X-ray emitting arch system was observed during the last Skylab mission. This arcade stayed in the same approximate position for several solar rotations. It is suggested that these long-lived arches owe their stability to the stable coronal magnetic-field configuration. A global constant-alpha force-free magnetic-field analysis, as developed by Nakagawa et al. (1977), is used to describe the arches, and results in a marked resemblance between the theoretical magnetic-field configuration and the observed X-ray emitting feature.
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Mcguire, J. P., Tandberg-Hanssen, E., Krall, K. R., Wu, S. T., Smith, J. B., Speich, D. M.. 1977-04-01. A long-lived coronal arch system observed in X-rays. https://ntrs.nasa.gov/citations/19770060058
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