Multipole electromagnetic moments of a neutrino in a dispersive medium

Four multipole moments of Dirac and Majorana neutrinos in a dispersive medium are calculated: electric monopole (charge), electric dipole, magnetic dipole, and anapole dipole moment. The same quantities are given in vacuum for comparison. In an isotropic medium neutrinos have no (induced) anapole moment, but in a ferromagnetic material such a moment appears, and for a Majorana neutrino it is the only electromagnetic characteristic. The cross section for elastic scattering of Majorana neutrinos by nuclei in an isotropic plasma is calculated as an illustration