  In this paper we discuss bremsstrahlung induced by neutrino scattering. This
process should exist since neutrinos are expected to couple to photons via
magnetic dipole and transition moments. These moments are loop-induced and tiny
in the Standard Model with neutrino masses but could be significantly enhanced
in extended theories. As concrete example we study the scattering of the two
largest neutrino fluxes on earth, solar neutrinos and Cosmic Neutrino
Background (CNB). It is tempting to consider this as a potential signature for
CNB searches but it turns out that the signal is extremely small and unlikely
to be observed.
