Obtaining supernova directional information using the neutrino matter oscillation pattern

Understand

A nearby core collapse supernova will produce a burst of neutrinos in several detectors worldwide.

• With reasonably high probability, the Earth will shadow the neutrino flux in one or more detectors.
• In such a case, for allowed oscillation parameter scenarios, the observed neutrino energy spectrum will bear the signature of oscillations in Earth matter.
• Because the frequency of the oscillations in energy depends on the pathlength traveled by the neutrinos in the Earth, an observed spectrum contains also information about the direction to the supernova.