The diffuse supernova neutrino background: Expectations and uncertainties derived from SN1987A

Abstract

Context: The detection of the diffuse supernova neutrino background may be imminent, but theoretical predictions are affected by substantial uncertainties. AIMS. We calculate the signal and its uncertainty with the present configuration of Super-Kamiokande and consider the possibility of lowering the threshold by means of gadolinium loading. Methods: We model neutrino emission following the analysis of SN1987A by Pagliaroli and collaborators 2009 and use the number of expected events in the neutrino detector as a free parameter of the fit. The best-fit value of this parameter and its error are evaluated by means of standard maximum likelihood procedures, taking into account properly the correlations. Results: The uncertainties in the astrophysics of the emission dominates the total uncertainty in the expected signal rate, which conservatively ranges from 0.3 to 0.9 events per year and from 1.1 to 2.9 with gadolinium.

4 pages, 5 figures, to appear in A&A

References in corpus (4)

• The Diffuse Supernova Neutrino Background
• The Diffuse Supernova Neutrino Background is detectable in Super-Kamiokande
• Improved analysis of SN1987A antineutrino events
• Neutrino Spectrum from SN 1987A and from Cosmic Supernovae

Cited by in corpus (12)

• Supernova Relic Neutrino Search with Neutron Tagging at Super-Kamiokande-IV
• Diffuse supernova neutrinos at underground laboratories
• Comparative analysis of SN1987A antineutrino fluence
• Diffuse Supernova Neutrino Background from extensive core-collapse simulations of $8$-$100{\mathrm{M}}_{\odot }$ progenitors
• Impact of binary interactions on the diffuse supernova neutrino background
• Detecting the Diffuse Supernova Neutrino Background in the future Water-based Liquid Scintillator Detector Theia
• Prospects for the detection of the Diffuse Supernova Neutrino Background with the experiments SK-Gd and JUNO
• Diffuse neutrino background from past core-collapse supernovae
• Impact of late-time neutrino emission on the diffuse supernova neutrino background
• Diffuse supernova neutrino background with up-to-date star formation rate measurements and long-term multidimensional supernova simulations
• Neutrino Sources and Properties
• Simulated neutrino signals of low and intermediate energy neutrinos on Cd detectors