Low Multiplicity Burst Search at the Sudbury Neutrino Observatory

Abstract

Results are reported from a search for low-multiplicity neutrino bursts in the Sudbury Neutrino Observatory (SNO). Such bursts could indicate detection of a nearby core-collapse supernova explosion. The data were taken from Phase I (November 1999 - May 2001), when the detector was filled with heavy water, and Phase II (July 2001 - August 2003), when NaCl was added to the target. The search was a blind analysis in which the potential backgrounds were estimated and analysis cuts were developed to eliminate such backgrounds with 90% confidence before the data were examined. The search maintained a greater than 50% detection probability for standard supernovae occurring at a distance of up to 60 kpc for Phase I and up to 70 kpc for Phase II. No low-multiplicity bursts were observed during the data-taking period.

11 pages, 4 figures, submitted to ApJ

References in corpus (5)

• Supernova Neutrino Detection
• Low Energy Threshold Analysis of the Phase I and Phase II Data Sets of the Sudbury Neutrino Observatory
• Neutrino signals from the formation of black hole: a probe of equation of state of dense matter
• Connection between supernova shocks, flavor transformation, and the neutrino signal
• Supernova Neutrinos: The Accretion Disk Scenario

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• The Sudbury Neutrino Observatory
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• A Search for Astrophysical Burst Signals at the Sudbury Neutrino Observatory
• Search for supernova bursts in Super-Kamiokande IV
• Supernova Neutrino Burst Monitor at the Baksan Underground Scintillation Telescope
• Search for supernova neutrinos and constraint on the galactic star formation rate with the KamLAND data