Topology analysis of emerging bipole clusters producing violent solar events observed by SDO

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

Mysore

Congreso; 39th COSPAR General Assembly; 2012

COSPAR

During the rising phase of Solar Cycle 24, tremendous magnetic solar activity occurs on the Sun with fast and compact emergence of magnetic ux leading to burts of ares (C to M and even X class) . We have investigated the violent events occuring in the cluster of two active regions AR 11121 and AR11123 observed in November by SDO. In less than two days the magnetic eld increases by a factor of 10 with the emergence of groups of bipoles. A topology analysis demonstrates the formation of multiple separatrices and quasi-separatrix layers explaining possible mechanisms for destabilization of the magnetic structures such as laments and coronal loops.