185. Existence of the Closed Magnetic Field Lines Crossing the Coronal Hole Boundaries

Contributed by Chia-Hsien Lin. Posted on August 17, 2022

This study reveals that a significant number of coronal-hole field lines extend beyond the coronal-hole boundaries and that many coronal-holes contain no open magnetic field lines.

131. Photospheric Magnetic Structure of Coronal Holes

Contributed by Stefan J. Hofmeister. Posted on September 30, 2019

Photospheric magnetic properties for a set of coronal holes are investigated using HMI magnetograms, and it is found that the overall unbalanced magnetic flux of the coronal holes arises from long-lived magnetic elements with a lifetime longer than 40 hours.

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Tag Archives: coronal holes

185. Existence of the Closed Magnetic Field Lines Crossing the Coronal Hole Boundaries

131. Photospheric Magnetic Structure of Coronal Holes