IAFE   05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
A long-duration active region: evolution and quadrature observations of ejective events
Autor/es:
LÓPEZ FUENTES, M.C.; POISSON, M.; CREMADES, H.; CABELLO, I.; MERENDA, L.; MANDRINI, C.H.; LÓPEZ, FERNANDO M.
Reunión:
Simposio; IAU Symposium 327, Fine structure and dynamics of the solar atmosphere; 2016
Resumen:
Coronal mass ejections (CMEs) constitute one of the most impressive manifestations of solar dynamics. Unknown aspects of their initiation, evolution, and associated phenomena, together with their capability ofperturbing the fragile technological equilibrium on which nowadays society depends, turn them a compellingsubject of study. While space weather forecasts are thus far not able to predict when and where in theSun will the next CME take place, various CME triggering mechanisms have been proposed, withoutreaching consensus on which is the predominant one. To improve our knowledge in these respects, weinvestigate a long-duration active region throughout its life, from birth until decay along five rotations, inconnection with its production of ejective events. We benefit from the wealth of solar remote-sensing datawith improved temporal, spatial, and spectral resolution provided by the ground-breaking space missionsSTEREO, SDO, and SOHO. During the investigated time interval, which covers the months July-November2010, the STEREO spacecraft were nearly 180" apart, allowing for the uninterrupted tracking of the activeregion and its ensuing CMEs. The ejective aspect is examined from multi-viewpoint coronagraphic images,while the dynamics of the active region photospheric magnetic field are inspected by means of SDO/HMI data for specific subintervals of interest. The ultimate goal of this work is to identify common patterns in theejective aspect that can be connected with the active region characteristics, as well as the characterizationof the mechanisms of energy transport and release.