High Energy Neutrino Signals from the First Stars

Details High Energy Neutrino Signals from the First Stars High Energy Neutrino Signals from the First Stars

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc..990..139i&link_type=abstract

FIRST STARS III: First Stars II Conference. AIP Conference Proceedings, Volume 990, pp. 139-141 (2008).

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Population Iii Stars, Dark Matter, Neutrino, Muon, Pion, And Other Elementary Particles, Cosmic Rays, Gamma-Ray Sources, Gamma-Ray Bursts

Scientific paper

We perform a new estimate of the high energy neutrinos expected from GRBs associated with the first generation of stars in light of new models and constraints on the epoch of reionization and a more detailed evaluation of the neutrino emission yields. In disagreement with most optimistic results in previous literature, we find that high energy neutrinos from Population III stars will not be observable with current or near future neutrino telescopes. This rules them out as a viable diagnostic tool for these still elusive metal-free stars. We also perform an estimate of the flux at Earth of neutrinos from Dark Matter annihilation in the recently proposed ``Dark Stars'' obtaining equally negative results; in particular the very low peak-energies of this flux buries it several orders of magnitude below the atmospheric ones. Similar considerations (with different backgrounds) apply to the gamma-ray background by DM annihilation.

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