Flares and eruptions in a newly emerging flux region

SCHMIEDER, B.; MANDRINI, C.H.; DÉMOULIN, P.; GUO, Y.

Wroclaw

Congreso; XVI Consulations on Solar Physics; 2013

Wroclaw Observatory

AR 11123 was formed in 24 hours in the trailing polarity of the AR 11121 on November 10-11 2010 observed by SDO/HMI and THEMIS vector magnetographs.  SDO/AIA (304 A and 171 A) allows us  to follow the development of five flares during this one day time involving the eruption of two active region filaments. The topology analysis  with lfff and nlfff extrapolations shows the existence of 3 null points. One is  local and two  involved the preceeding active region. Reconnections occur above the filament favouring its eruption. Round-shape ribbons overlay the separatrices and QSLs  between the two regions.