Monday, November 26, 2012

1211.5253 (David Moss et al.)

Reversals of the solar dipole    [PDF]

David Moss, Leonid L. Kitchatinov, Dmitri Sokoloff
During a solar magnetic field reversal the magnetic dipole moment does not vanish, but migrates between poles, in contradiction to the predictions of mean-field dynamo theory. We try to explain this as a consequence of magnetic fluctuations. We exploit the statistics of fluctuations to estimate observable signatures. Simple statistical estimates, taken with results from mean-field dynamo theory, suggest that a non-zero dipole moment may persist through a global field reversal. Fluctuations in the solar magnetic field may play a key role in explaining reversals of the dipolar component of the field.
View original: http://arxiv.org/abs/1211.5253

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