Tuesday, May 29, 2012

Dying stars have a Halo

LQ13224 - We have discovered that within the heart of an exploding star (core-collapse supernova) there is a "Halo" of neutrinos.  The neutrinos in this halo, although very few in number, may nevertheless control the way that neutrinos change their flavors, e.g., converting from "electron-type neutrinos" into, say, "muon-type neutrinos".  This will force a new paradigm in the way that neutrino flavor is  handled in supernovae, and, in turn, could lead to a new understanding of supernova explosions and the origin of the elements.