INVESTIGADORES
MININNI Pablo Daniel
congresos y reuniones científicas
Título:
Sobre el ciclo de actividad solar y el mínimo de Maunder
Autor/es:
P.D. MININNI Y D.O. GÓMEZ
Lugar:
La Plata, Argentina
Reunión:
Congreso; 46 Reunión anual de la Asociación Argentina de Astronomía; 2003
Institución organizadora:
Asociación Argentina de Astronomía
Resumen:
One of the most impressive solar phenomena is its magnetic activity cycle. The number of sunspots observed in the solar surface varies with a period of approximately eleven years. Superimposed to this cyclic behavior, there are events as the Maunder minimum (with took place during the second half of the seventeenth century), during wich very few sunspots were detected. In the present work, and alpha-Omega dynamo model is proposed to study these phenomena,. We use profiles of the solar interior obtained from helioseismology, which include differential rotation (the Omega effect), a meridional flow and the turbulent velocity field of the convective region (the alpha effect). We simulate the helicoidal and disordered flow of the giant cells through a stocastic component in the alpha coefficient; we are able describe not only the periodic behavior of the solar cycle, but also sporadic events such as the Maunder minimum.
