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Constraints on the Star Formation Rate from Supernova Relic Neutrino Observations

M. Fukugita, M. Kawasaki

astro-pharXiv:astro-ph/0204376

Abstract

We discuss the implication of the observation of supernova relic neutrinos on the study of the star formation rate (SFR) in galaxies. The limit recently obtained at Super-Kamiokande (SK) is already marginally significant: The SFR we derived ψ(t0)<0.040Myr-1Mpc-3(at a 90% CL) is about twice the SFR estimated from radio observations, and five times the rate from Hα allowing for uncertainties in the model supernova neutrino flux.

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