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Two successive partial mini-filament confined ejections

Mandrini, C. H.; Cristiani, G. D.; López Fuentes, M. +2 more

Active region (AR) NOAA 11476 produced a series of confined plasma ejections, mostly accompanied by flares of X-ray class M, from 08 to 10 May 2012. The structure and evolution of the confined ejections resemble that of EUV surges; however, their origin is associated to the destabilization and eruption of a mini-filament, which lay along the photo…

Chirality and magnetic configuration associated with two-ribbon solar flares: AR 10930 versus AR 11158

Chen, P. F.; Li, Bo; Yan, Yihua +2 more

The structural property of the magnetic field in flare-bearing solar active regions (ARs) is one of the key aspects for understanding and forecasting solar flares. In this paper, we make a comparative analysis on the chirality and magnetic configurations associated with two X-class two-ribbon flares happening in AR 10930 and AR 11158. The photosph…