2 papers
astro-ph.SR2020
Deducing the reliability of relative helicities from nonlinear force-free coronal models
Julia K. Thalmann, X. Sun, K. Moraitis +1
We study the relative helicity of active region (AR) NOAA~12673 during a ten-hour time interval centered around a preceding X2.2 flare (SOL2017-09-06T08:57) and also including an e…
astro-ph.SR2019
Magnetic helicity and eruptivity in active region 12673
K. Moraitis, X. Sun, E. Pariat +1
Context. In September 2017 the largest X-class flare of Solar Cycle 24 occurred from the most active region (AR) of this cycle, AR 12673. The AR attracted much interest because of…