Time-integrated supernova neutrino flux from a nearby cluster

The rate of gravitational collapse (type II) supernovae in our Galaxy is uncertain by a factor of three or more. One way to determine the Galactic supernova rate is through a radiogeochemical experiment (for example, the molybdenum–technetium experiment) that would integrate the neutrino flux over several million years. While such a measurement is designed to integrate the flux over the entire Galaxy, nearby star-forming regions could skew the results. We model the fluence (integrated flux) from a recently identified such region, the Scorpius-Centaurus OB association, and compare with the fluence from the rest of the Galaxy.