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Abstract:

The magnetic field of the Sun displays a periodic behavior known as the solar cycle. The kinematic αΩ dynamo is the standard theoretical model which adequately reproduces the overall features of this magnetic cycle, such as its period and the latitudinal migration of sunspots. We performed numerical simulations within this theoretical framework. The α coefficient in these simulations contains a nonlinear dependence on the field intensity, which is responsible of the saturation of this dynamo. We obtain a reasonable agreement between our results and several quantitative features observed for the solar cycle. We also performed power spectra of our results and obtain a peak at three times the cycle frequency, in agreement with previous observational studies. We confirm that this peak is a signature of the type of nonlinearity responsible for the saturation mechanism. © 2003 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:Modelling the generation of magnetic field on the Sun
Autor:Gómez, D.O.; Mininni, P.D.
Ciudad:Colonia del Sacramento
Filiación:Departamento de Física, Fac. de Ciencias Exactas y Naturales, C. Universitaria, 1428 Buenos Aires, Argentina
IAFE, CONICET, UBA, C. Universitaria, 1428 Buenos Aires, Argentina
Palabras clave:Magnetic fields; Sun; Turbulence; Computer simulation; Kinematics; Magnetic field effects; Mathematical models; Spectrum analysis; Turbulence; Solar cycle; Sun
Año:2003
Volumen:327
Número:1-2
Página de inicio:54
Página de fin:58
DOI: http://dx.doi.org/10.1016/S0378-4371(03)00438-2
Título revista:13th Conference on Nonequilibrium Statist
Título revista abreviado:Phys A Stat Mech Appl
ISSN:03784371
CODEN:PHYAD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03784371_v327_n1-2_p54_Gomez

Referencias:

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Citas:

---------- APA ----------
Gómez, D.O. & Mininni, P.D. (2003) . Modelling the generation of magnetic field on the Sun. 13th Conference on Nonequilibrium Statist, 327(1-2), 54-58.
http://dx.doi.org/10.1016/S0378-4371(03)00438-2
---------- CHICAGO ----------
Gómez, D.O., Mininni, P.D. "Modelling the generation of magnetic field on the Sun" . 13th Conference on Nonequilibrium Statist 327, no. 1-2 (2003) : 54-58.
http://dx.doi.org/10.1016/S0378-4371(03)00438-2
---------- MLA ----------
Gómez, D.O., Mininni, P.D. "Modelling the generation of magnetic field on the Sun" . 13th Conference on Nonequilibrium Statist, vol. 327, no. 1-2, 2003, pp. 54-58.
http://dx.doi.org/10.1016/S0378-4371(03)00438-2
---------- VANCOUVER ----------
Gómez, D.O., Mininni, P.D. Modelling the generation of magnetic field on the Sun. Phys A Stat Mech Appl. 2003;327(1-2):54-58.
http://dx.doi.org/10.1016/S0378-4371(03)00438-2