Parallel plasma loops and the energization of the solar corona
- Peter, Hardi
- Chitta, Lakshmi Pradeep
- Chen, Feng
- Pontin, David I.
- Winebarger, Amy R.
- Golub, Leon
- Savage, Sabrina L.
- Rachmeler, Laurel A.
- Kobayashi, Ken
- Brooks, David H.
- Cirtain, Jonathan W.
- De Pontieu, Bart
- McKenzie, David E.
- Morton, Richard J.
- Testa, Paola
- Tiwari, Sanjiv K.
- Walsh, Robert W.
- Warren, Harry P.
DOIAbstract
The outer atmosphere of the Sun is composed of plasma heated to temperatures well in excess of the visible surface. We investigate short cool and warm (<1 MK) loops seen in the core of an active region to address the role of field-line braiding in energising these structures. We report observations from the High-resolution Coronal imager (Hi-C) that have been acquired in a coordinated campaign with the Interface Region Imaging Spectrograph (IRIS). In the core of the active region, the 172 A band of Hi-C and the 1400 A channel of IRIS show plasma loops at different temperatures that run in parallel. There is a small but detectable spatial offset of less than 1 arcsec between the loops seen in the two bands. Most importantly, we do not see ob...
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