Pop III GRBs: an estimative of the event rate for future surveys

Abstract

We discuss the theoretical event rate of gamma-ray bursts (GRBs) from the collapse of massive primordial stars. We construct a theoretical model to calculate the rate and detectability of these GRBs taking into account all important feedback and recent results from numerical simulations of pristine gas. We expect to observe a maximum of N $\lesssim$ 0.2 GRBs per year integrated over at z > 6 with \textit{Swift} and N $\lesssim$ 10 GRBs per year integrated over at z > 6 with EXIST.

arXiv comment6 pages, 2 figures, published in Proceedings of the Gamma-Ray Bursts 2012 Conference (GRB 2012)