An "archaeological" quest for galactic supernova neutrinos

Rimantas Lazauskas, Cecilia Lunardini, Cristina Volpe

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

We explore the possibility to observe the effects of electron neutrinos from past galactic supernovae, through a geochemical measurement of the amount of Technetium 97 produced by neutrino-induced reactions in a Molybdenum ore. The calculations we present take into account the recent advances in our knowledge of neutrino interactions, of neutrino oscillations inside a supernova, of the solar neutrino flux at Earth and of possible failed supernovae. The predicted Technetium 97 abundance is of the order of 10 7 atoms per 10 kilotons of ore, which is close to the current geochemical experimental sensitivity. Of this, ∼ 10-20% is from supernovae. Considering the comparable size of uncertainties, more precision in the modeling of neutrino fluxes as well as of neutrino cross sections is required for a meaningful measurement.

Original languageEnglish (US)
Article number029
JournalJournal of Cosmology and Astroparticle Physics
Volume2009
Issue number4
DOIs
StatePublished - Nov 9 2009

Keywords

  • Core-collapse supernovas
  • Star formation
  • Supernova neutrinos

ASJC Scopus subject areas

  • Astronomy and Astrophysics

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