Abnormal cycles from normal dynamos (Invited)

Details Abnormal cycles from normal dynamos (Invited) Abnormal cycles from normal dynamos (Invited)

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsh13c..01c&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SH13C-01

Astronomy and Astrophysics

Astrophysics

[7536] Solar Physics, Astrophysics, And Astronomy / Solar Activity Cycle, [7544] Solar Physics, Astrophysics, And Astronomy / Stellar Interiors And Dynamo Theory

Scientific paper

The primary aim of this talk is to illustrate how simple yet reasonably realistic dynamo models of the solar cycle can exhibit "abnormal" features, including extended periods of minimum activity as currently observed. I will show that dynamo including even very simple amplitude quenching nonlinearities can, in the presence of low-amplitude stochastic forcing, produce fluctuations that may be mistaken for switches between distinct dynamical behaviors, and will examine to what degree such behavior can be distinguished from true intermittency, given extant data.

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