Time-delay between neutrinos and gamma-rays in short GRBs

Abstract

In this work we make an estimate of the time-delay between signals, recorded at detectors on Earth, of neutrinos and photons originated in a short gamma-ray burst. We describe the geometry and dynamics of the system according to the Fireshell model. The delay in the photon's arrival time is produced because the system is originally opaque to radiation; thus, the photons remain trapped and thermalize until the transparency condition is reached. We calculate the time interval between neutrino- and photon- emission in the black hole frame and transform it to the observer-frame using Lorentz transformations. We obtain a difference in the arrival time at Earth of $\Delta t_{Earth}\approx 854.57$ s.

arXiv comment2 figures, 13 references

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• Dark matter, supernova neutrinos and other backgrounds in direct dark matter searches. The ANDES laboratory prospects