The diffuse supernova neutrino ux

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


I review the status and perspectives of the research on the diffuse ux of (core collapse) supernova neutrinos (DSN-F). Several upper bounds exist on this ux in different detection channels. The strongest is the limit from SuperKamiokande (SK) of 1.2 electron antineutrinos cm-2s-1 at 90% confidence level above 19.3 MeV of neutrino energy. The predictions of the DSN-F depend on the supernova rate and on the neutrino emission in a individual supernova. Above the SK threshold, they range between 0.05 electron antineutrinos cm-2s-1 up to touching the SK limit. The SK bound constrains part of the parameter space of the supernova rate { and indirectly of the star formation rate { only in models with relatively hard neutrino spectra. Experimentally, a feasible and very important goal for the future is the improvement of background discrimination and the resulting lowering of the detection threshold. Theory instead will benefit from reducing the uncertainties on the supernova neutrino emission (either with more precise numerical modeling or with data from a galactic supernova) and on the supernova rate. The latter will be provided precisely by next generation supernova surveys up to a normalization factor. Therefore, the detection of the DSN-F is likely to be precious chiey to constrain such normalization and to study the physics of neutrino emission in supernovae.

Original languageEnglish (US)
Title of host publicationNEUTRINO 2006 - Proceedings of the 22nd International Conference on Neutrino Physics and Astrophysics
Number of pages6
StatePublished - 2006
Externally publishedYes
Event22nd International Conference on Neutrino Physics and Astrophysics, NEUTRINO 2006 - Santa Fe, NM, United States
Duration: Jun 13 2006Jun 19 2006


Other22nd International Conference on Neutrino Physics and Astrophysics, NEUTRINO 2006
Country/TerritoryUnited States
CitySanta Fe, NM

ASJC Scopus subject areas

  • Astronomy and Astrophysics


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