Search for neutrino bursts from core collapse supernovae at the Baksan Underground Scintillation Telescope

TL;DR

This paper reports on a 24.7-year experiment using the Baksan Underground Scintillation Telescope to detect neutrino bursts from supernovae, setting an upper limit on supernova collapse frequency in our galaxy.

Contribution

It provides long-term observational data and constraints on supernova neutrino burst frequency in our galaxy.

Findings

No neutrino burst detections over 24.7 years

Upper bound of 0.093 supernovae per year in our galaxy

Extended observational period improves constraints on supernova rates

Abstract

Current status and results of the experiment on recording neutrino bursts are presented. The observation time (since 1980) is 24.7 years. The upper bound of collapse frequency in our Galaxy is 0.093 $y^{-1}$ (90% CL).