Breakout Reconnection Observed by the TESIS EUV Telescope

• Published in: arXiv.org 2016-01
• Main Authors: Anton Reva, Ulyanov, Artem, Shestov, Sergey, Kuzin, Sergey
• Format: Article
• Language: English
• Subjects: Coronal mass ejection; Photosphere; Solar corona; Telescopes
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.1601.04511

We present experimental evidence of the coronal mass ejection (CME) breakout reconnection, observed by the TESIS EUV telescope. The telescope could observe solar corona up to 2 \(R_\odot\) from the Sun center in the Fe 171 \AA\ line. Starting from 2009 April 8 TESIS, observed an active region (AR) that had a quadrupolar structure with an X-point 0.5 \(R_\odot\) above photosphere. A reconstructed from the MDI data magnetic field also has a multipolar structure with an X-point above the AR. At 21:45 UT on April 9, the loops near the X-point started to move away from each other with a velocity of \(\approx\) 7 km s\(^{-1}\). At 01:15 UT on April 10, a bright stripe appeared between the loops, and the flux in the GOES 0.5-4 \AA\ channel increased. We interpret the loops' sideways motion and the bright stripe as evidence of the breakout reconnection. At 01:45 UT, the loops below the X-point started to slowly move up. At 15:10 UT, the CME started to accelerate impulsively, while at the same time a flare arcade formed below the CME. After 15:50 UT, the CME moved with constant velocity. The CME evolution precisely followed the breakout model scenario.