hep-ex paper of the day: for stars within 500pc of us, SuperK+KamLAND are sensitive to supernova neutrinos---but not just from the core collapse! They'll also see the final hours (up to a day!) of runaway nuclear heating! AND the signal is strongly mass-hierarchy sensitive via the MSW effect! 🧪⚛️
Preceding a core-collapse supernova, various processes produce an increasing amount of neutrinos of all flavors characterized by mounting energies from the interior of massive stars. Among them,...
"A pre-supernova alert system combining the KamLAND detector and the Super-Kamiokande detector is developed and put into operation, which can provide a supernova alert to the astrophysics community....it can provide early warnings up to 12 hours in advance." 😮 Very cool. 🔭 🎢