Argentina
Artículo

A new technique for comparing solar dynamo models and observations

We present a new technique suitable for a detailed comparison between solar dynamo models and observations. The method is based on the technique of dynamo spectroscopy proposed by Hoyng & Schutgens (1995) and bi-orthogonal decomposition of solar data. This decomposition provides a representation of...

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Autor Principal: <div class="autor_fcen" id="5788">Mininni, P.D.</div>
Otros Autores: <div class="autor_fcen" id="3802">Gómez, D.O.</div>
Formato: Artículo
Lenguaje: eng
Publicado: 2004
Materias:
Sun
Acceso en línea: http://digital.bl.fcen.uba.ar/Download/paper/paper_00046361_v426_n3_p1065_Mininni.pdf
Sumario:
We present a new technique suitable for a detailed comparison between solar dynamo models and observations. The method is based on the technique of dynamo spectroscopy proposed by Hoyng & Schutgens (1995) and bi-orthogonal decomposition of solar data. This decomposition provides a representation of the mean and fluctuating components of the flows, yielding relevant information for the comparison. To illustrate the method, we use a simple kinematic dynamo model of the solar cycle. Irregularities are introduced in the evolution of the magnetic fields modeling the turbulent behavior of the solar convective region with a random perturbation on the external source for the poloidal field. After fine tuning the parameters of the model we obtain solar like solutions displaying a magnetic cycle of 22 years, with fluctuations in its period and amplitude. In addition, the model generates Maunder-like events with a time span of 60-100 years.