Observations of a hybrid double-streamer/pseudostreamer in the solar corona

• Published in: The Astrophysical Journal
• Main Authors: Rachmeler, L.A., Platten, S.J., Bethge, C., Seaton, D.B., Yeates, A.R.
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2014
• Subjects: Sun: corona; Sun: filaments; prominences; Sun: magnetic fields; South Pole; South pole
• Online Access: https://research-portal.st-andrews.ac.uk/en/publications/ea9d3b4f-37a0-485f-96bb-908d29fb07b7; https://doi.org/10.1088/2041-8205/787/1/L3; https://research-repository.st-andrews.ac.uk/bitstream/10023/5318/1/Rachmeler_2014_TAJL_Observations.pdf

We report on the first observation of a single hybrid magnetic structure that contains both a pseudostreamer and a double streamer. This structure was originally observed by the SWAP instrument on board the PROBA2 satellite between 2013 May 5 and 10. 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 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 modeling techniques. We describe the topology and dynamic consequences of such a unified structure.