Grand minima under the light of a low order dynamo model

Details Grand minima under the light of a low order dynamo model Grand minima under the light of a low order dynamo model

Feb 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011jastp..73..191p&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 73, Issue 2-3, p. 191-197.

Physics

5

Scientific paper

In this work we use a low order dynamo model and study under which conditions can it reproduce solar grand minima. We begin by building the phase space of a proxy for the toroidal component of the solar magnetic field and we develop a model, derived from mean field dynamo theory, that gives the time evolution of the toroidal field. This model is characterized by a non-linear oscillator whose coefficients retain most of the physics behind dynamo theory. In the derivation of the model we also include stochastic oscillations in the α effect. We found evidences that stochastic fluctuations in α effect can trigger grand minima episodes in this model under some considerations. We also explore other ways of creating grand minima by looking into the physical mechanisms that compose the coefficients of the oscillator. The balance between meridional circulation and magnetic diffusivity as well as the field intensification by buoyancy driven instabilities, might have a crucial role in inducing grand minima.

Affiliated with

Also associated with

No associations

Rating

Grand minima under the light of a low order dynamo model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Grand minima under the light of a low order dynamo model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Grand minima under the light of a low order dynamo model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1121091