Nora Linn Strotjohann Uni Bonn

High Energy Neutrinos from Supernovae IIn(pdf)

In March 2012 a highly significant neutrino doublet was discovered in the optical follow-up program of the IceCube detector and a supernova of type IIn was found at the reconstructed position. Cosmic ray emission and TeV neutrinos are expected from this supernova type, where the ejecta crash into a dense circumstellar medium. We use optical observations to model the processes in the supernova and predict a neutrino flux. However, even under the most favorable conditions, the detection of only 0.03 neutrinos over a time of ~100 days is expected. Hence, it seems improbable that the neutrino doublet arriving within less than two seconds was produced by the supernova.