An Absence of Neutrinos Associated with Cosmic Ray Acceleration in Gamma-Ray Bursts
IceCube Collaboration: R. Abbasi, Y. Abdou, T. Abu-Zayyad, M., Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, D. Altmann, K. Andeen, J., Auffenberg, X. Bai, M. Baker, S. W. Barwick, R. Bay, J. L. Bazo Alba, K., Beattie, J. J. Beatty, S. Bechet, J. K. Becker, K.-H. Becker
TL;DR
This study used IceCube data to search for neutrinos from gamma-ray bursts but found none, challenging models that link GRBs to ultra high-energy cosmic ray acceleration.
Contribution
It provides the first comprehensive search for neutrinos from GRBs using two years of IceCube data, setting new constraints on related theoretical models.
Findings
No neutrino signals detected from GRBs in the data
Constraints placed on models of neutrino and cosmic-ray production in GRBs
Results challenge the hypothesis that GRBs are the primary sources of ultra high-energy cosmic rays
Abstract
Gamma-Ray Bursts (GRBs) have been proposed as a leading candidate for acceleration of ultra high-energy cosmic rays, which would be accompanied by emission of TeV neutrinos produced in proton-photon interactions during acceleration in the GRB fireball. Two analyses using data from two years of the IceCube detector produced no evidence for this neutrino emission, placing strong constraints on models of neutrino and cosmic-ray production in these sources.
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