Nonequilibrium Flux Rope Formation by Confined Flares Preceding a Solar Coronal Mass Ejection

Kliem, Bernhard, Jeongwoo Lee, Rui Liu, Stephen M. White, Chang Liu, and Satoshi Masuda, Nonequilibrium Flux Rope Formation by Confined Flares Preceding a Solar Coronal Mass Ejection, ApJ, 909, 91 (2021) (ADS)

The cartoon

(click on the image for a larger version)

Can we somehow shoehorn non-eruptive flares into the magnetic evolution envisioned in the CSHKP framework, or are there really cases where simple loop structures can become unstable without forming vertical current sheets? Otherwise it's the usual cartoon again and again. Here the idea is that a flux rope develops under a confining canopy, which may evolve into a similar current-sheet formation prior to eruption, which can become unstable. Then a further stable phase ensues, after which a full eruption can take place. In the meanwhile the confined eruption can have ribbons in the usual way.

      The analysis in this paper is mainly morphological and based on a single series of events.

Date: 2021 May 09