El rol de las características y evolución de las regiones activas solares en la producción de fulguraciones y eyecciones coronales de masa

Abstract

Solar events such as flares and coronal mass ejections (CMEs) are the most energetic phenomena affecting interplanetary space in timescales from minutes to a few days. With the main aim of establishing parameters to be used in the prediction of phenomena with potential impact on space weather, there has been in recent years a strong interest in determining what characteristics of active regions (ARs) and their evolution make them more prone to produce these events. For that, it is necessary to identify and characterize the processes of energy and magnetic helicity injection in ARs and the mechanisms of destabilization of magnetic structures that lead to impulsive energy release and ejection of matter to space. This kind of study requires the combination of observations in different wavelengths, corresponding to distinct temporal and spatial regimes, with the use of sophisticated magnetohydrodynamic modeling. In this article we review and discuss some recent advances on the subject and we present examples of analysis of AR magnetic evolutions in relation with the occurrence of impulsive energetic events like flares and CMEs.