Plasma induced neutrino radiative decay instead of neutrino spin light
  The conversion nu_L -> nu_R gamma^* of a neutrino with a magnetic moment is considered, caused by the additional Wolfenstein energy acquired by a left-handed neutrino in medium, with an accurate taking account of the photon \gamma^* dispersion in medium. It is shown that the threshold arises in the process, caused by the photon (plasmon) effective mass. This threshold leaves no room for the so-called "neutrino spin light" in the most of astrophysical situations. 
A.V. Kuznetsov and N.V. Mikheev (Yaroslavl State (P.G. Demidov)   University, Russia)