  Recent experiment proposed to observe induced radiative neutrino transitions
are confronted to existing bounds on neutrino magnetic moments from earth-based
experiments. These are found to exclude any observation by several orders of
magnitude, unless the magnetic moments are assumed to be strongly momentum
dependent. This possibility is discussed in some generality, and we find that
nontrivial dependence of the neutrino form factor may indeed occur, leading to
quite unexpected effects, although this is insufficient by orders of magnitude
to justify the experiments.
