Neutrino flux from observable Gamma Ray Bursts

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

We derive the flux and spectrum of neutrinos from Gamma Ray Bursts (GRBs), and the corresponding detection rate in a cubic-km neutrino detector, within the frame work of the Internal Shock Model. In this model, GRBs are produced by internal shocks in a highly relativistic wind, and high energy neutrinos result from photo-meson interactions of wind protons with gamma-ray photons. We show that the predicted neutrino flux is only weakly dependent on unknown wind parameters, due to the fact that observed GRB characteristics require these parameters to be strongly correlated. Thus, the predicted neutrino luminosity does not vary strongly from burst to burst. Several tens of events per year, correlated with GRBs, are expected to be detected in a cubic-km detector.

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