S320p.07 — Interaction of failed eruption with overlying magnetic filed

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Aug 10th at 6:00 PM until 7:30 PM

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Author(s): Tomasz Mrozek1, Dominik Gronkiewicz3, Sylwester Kolomanski3, Martyna Chruslinska2

Institution(s): 1. Space Research Centre PAS, 2. University of Warsaw, 3. University of Wroclaw

It is well known that not all solar flares are connected with eruptions followed by coronal mass ejection (CME). Even strongest X-class flares may not be accompanied by eruptions or are accompanied by failed eruptions. One of important factor that prevent eruption from developing into CME is strength of the magnetic field overlying flare site. Few observations show that active regions with specific magnetic configuration may produce many CME-less solar flares. Therefore, forecasts of geoeffective events based on active region properties have to take into account probability of confining solar eruptions. The role of the overlying magnetic field was discussed in the past. However, present observations of SDO/AIA give a chance for deep statistical analysis of properties of an active region that may lead to confining an eruption. We developed automated method which can recognize moving structures and confined eruptions in AIA images. With this tool we were able to analyse statistical properties of failed eruptions observed by AIA telescope. Physical mechanisms that may lead to dissipation of energy of failed eruption will be discussed and compared with observations.