Abstract:
Assuming that the flares tend to occur in highly sheared magnetic fields which also lead to a twisting of magnetic neutral line in complex active regions, we have defined a ‘twisting index’. The correlation of this twisting index with flares of various importance classes has been investigated. For cases where at least one bright flare has occurred in the complex active region the number of flare events seems to increase with the twisting index. For the cases of at least one normal flare or all faint flares, a similar but weaker dependence has been noticed.
