Observations of a Hybrid Double-Streamer/Pseudostreamer in the Solar Corona

Abstract

We report on the first observation of a single hybrid magnetic structure that contains both a pseudostreamer and a double helmet streamer. This structure was originally observed by the SWAP instrument aboard the PROBA2 satellite between 5 and 10~May~2013. It consists of a pair of filament channels near the south pole of the sun. On the western edge of the structure, the magnetic morphology above the filaments is that of a side-by-side double helmet streamer, with open field between the two channels. On the eastern edge, the magnetic morphology is that of a coronal pseudostreamer without the central open field. We investigated this structure with multiple observations and modelling techniques. We describe the topology and dynamic consequences of such a unified structure.

19 pages, 4 figures, 2 linked animations, accepted by ApJL

References in corpus (3)

• Torus instability
• Sympathetic Magnetic Breakout Coronal Mass Ejections from Pseudostreamers
• SWAP Observations of the Long-Term, Large-Scale Evolution of the EUV Solar Corona

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