Particle-physics constraints from the globular cluster M5: neutrino dipole momentsN. Viaux, M. Catelan, P. B. Stetson, G. G. Raffelt, J. Redondo, A. A. R. Valcarce and A. WeissA&A, 558 (2013) A12DOI: https://doi.org/10.1051/0004-6361/201322004