17 keV neutrino and large magnetic moment solution of the solar neutrino   puzzle
  Zee-type models with Majorons naturally incorporate the 17 keV neutrino but in their minimal version fail to simultaneously solve the solar neutrino puzzle. If there is a sterile neutrino state, we find a particularly simple solution to the solar neutrino problem, which besides $\nu_{17}$ predicts a light Zeldovich-Konopinski-Mahmoud neutrino $\nu_{light}=\nu_e+\nu_{\mu}^c$ with a magnetic moment being easily as large as $10^{-11}\mu_B$ through the Barr-Freire-Zee mechanism. 
Eugeni Akhmedov, Zurab Berezhiani, Goran Senjanovic and Zhijian Tao