  Employing some recent results in dynamics of systems with invariant subspaces
we find evidence in both truncated and full axisymmetric mean-field dynamo
models of a recently discovered type of intermittency, referred to as in-out
intermittency. This is a generalised form of on-off intermittency that can
occur in systems that are not skew products. As far as we are aware this is the
first time detailed evidence has been produced for the occurrence of a
particular form of intermittency for such deterministic PDE models and their
truncations. The specific signatures of this form of intermittency make it
possible in principle to look for such behaviour in solar and stellar
observations. Also in view of its generality, this type of intermittency is
likely to occur in other physical models with invariant subspaces.

Chaotic Dynamics;Chaotic Dynamics