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We investigate the nature of high-z host galaxies of long gamma-ray bursts (LGRBs) by means of state-of-the-art numerical simulations of cosmic structure formation and evolution of galaxies. We combine results from different runs with various box sizes and resolutions. By assigning to each simulated galaxy the probability to host an LGRB, assumed to be proportional to the mass of young stars, we provide a full description of the physical properties of high-z
Salvaterra et al. (Fri,) studied this question.