A Babcock‐Leighton Flux Transport Dynamo with Solar‐like Differential Rotation

Dikpati, Mausumi; Charbonneau, Paul

doi:10.1086/307269

Cited by 666 publications

(808 citation statements)

References 44 publications

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“…Jouve & Brun (2007a) have done a systematic study of the influence on the cycle period of the various parameters of Babcock-Leighton flux transport models. For the reference model possessing only one meridional circulation cell per hemisphere they confirm the results of Dikpati & Charbonneau (1999) that the cycle period is strongly dependent on 164 A. S. Brun the meridional circulation amplitude. A least square fit through the ensemble of models they computed leads to the following dependency:…”

Section: -D Mean Field Modelssupporting

confidence: 82%

Towards understanding the global magnetism of the Sun and solar-like stars

Brun

2009

Proc. IAU

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Section: -D Mean Field Modelssupporting

confidence: 82%

Towards understanding the global magnetism of the Sun and solar-like stars

Brun

2009

Proc. IAU

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“…For example, should the idea of a transport dynamo based on meridional circulation (e.g. Dikpati & Charbonneau, 1999) be considered as an independent option? In any case, the physical nature of solar activity on the time-scales of several activity cycles can be considered as a relatively understood phenomenon.…”

Section: The General Form Of the Record Of Solar Activitymentioning

confidence: 99%

Sunspot cycles and Grand Minima

Sokoloff¹,

Arlt²,

Moss³

et al. 2009

Proc. IAU

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Abstract. Observational data concerning the long-term history of cyclic solar activity as recorded in sunspot and isotopic data are discussed in the context of solar dynamo theory. In particular, a simple dynamo model based on differential rotation and the mirror asymmetry of convection with random fluctuations of dynamo governing parameters is shown to reproduce some basic features of the solar magnetic activity evolution.

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“…It has also been shown that although the αΩ -mechanism predicts α∂Ω /∂r < 0 in the northern hemisphere to explain the observed butterfly diagram, the most important result of last decade of studies in this field has shown that that the advective flux-transport of meridional circulation will produce equatorial migration of the spot zone even for positive α∂Ω /∂r if the eddy diffusivity is low enough (Choudhuri et al 1995;Dikpati & Charbonneau 1999;Dikpati & Gilman 2000;Küker et al 2001;Bonanno et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Advection‐dominated solar dynamo model with two‐cell meridional flow and a positive α ‐effect in the tachocline

Bonanno¹,

Elstner

Belvedère

2006

Astron Nachr

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Most probably the sunspot cycle period is ruled by a meridional flow located near the base of the convection zone (Hathaway et al. 2003). On the other hand, if the eddy diffusivity is low enough, dramatic modification of the standard α 2 Ω-dynamo by the meridional flow are expected. In this paper we shall discuss the dependence of periods, dynamo numbers and the sign of the current helicity as a function of the magnetic Reynolds number for a double cell meridional circulation and for a positive α-effect at the base of the convection zone. The dynamo action occurs at lower latitudes and its location is at the interface between equatorward and poleward motions near the base of the convection zone. In spite of the complexity of the flow pattern, our simulations show that the resulting dynamo action reproduces several observed features of the solar cycle.

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A Babcock‐Leighton Flux Transport Dynamo with Solar‐like Differential Rotation

Cited by 666 publications

References 44 publications

Towards understanding the global magnetism of the Sun and solar-like stars

Towards understanding the global magnetism of the Sun and solar-like stars

Sunspot cycles and Grand Minima

Advection‐dominated solar dynamo model with two‐cell meridional flow and a positive α ‐effect in the tachocline

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