IAFE   05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Loop observations and the coronal heating problem
Autor/es:
M. LÓPEZ FUENTES; J. A. KLIMCHUK
Lugar:
Córdoba
Reunión:
Congreso; 57 Reunión Anual de la Asociación Argentina de Astronomía; 2014
Institución organizadora:
Asociación Argentina de Astronomía
Resumen:
Coronal heating continues to be one of the fundamental problems of solar physics. In recent years,instrumental advances and the availability of data from space observatories produced important progress, imposingrestrictions to the models proposed. However, since the physical processes occur at spatial scales below the presentinstrumental resolution, definitive answers are still due. Since the corona is strongly dominated by the magneticfield, active region plasma is confined in closed structures or loops. These are the basic observable blocks of thecorona, so the analysis of their structure and evolution is essential to understand the heating. In this report,mainly addressed to astronomers not necessarily familiarized with the subject, we review some of the proposedheating models and we pay special attention to the sometimes confusing and apparently contradictory observationsof coronal loops. We discuss the consequences of these observations for some of the heating models proposed, inparticular those based on impulsive events known as nanoflares.