2000/03/02 by G. Pugliese, H. Falcke, Pugliese, G. +7
Physics and Astronomy · #Gamma-ray bursts and supernovae #Astrophysics and Cosmic Phenomena #Astronomy and Astrophysical Research
paper · pdf · doi:10.48550/arxiv.astro-ph/0003025
The relation between the cosmological evolution of the jet-disk symbiosis\nmodel for GRBs and the cosmic rays energy distribution is presented. We used\ntwo different Star Formation Rates (SFR) as a function of redshift and a\nLuminosity Function (LF) distribution to obtain the distribution in fluence of\nGRBs in our model and compare it with the data. We show a good agreement\nbetween the fluence distribution we obtain and the corrected data for the 4B\nBATSE catalogue. The results we obtain are generally valid for models that use\njet physics to explain GRB properties. The fluence in the gamma ray band has\nbeen used to calculate the energy in cosmic rays both in our Galaxy and at\nextragalactic distances as a function of the redshift. This energy input has\nbeen compared with the Galactic and extragalactic spectrum of cosmic rays and\nneutrinos. Using our jet disk symbiosis model, we found that in both cases GRBs\ncannot give any significant contribution to cosmic rays. We also estimate the\nneutrino background, obtaining a very low predicted flux. We also show that the\nfit of our model with the corrected fluence distribution of GRBs gives strong\nconstraints of the star formation rate as a function of the redshift.\n