Search for Prompt Neutrino Emission from Gamma-Ray Bursts with IceCube
IceCube Collaboration: M. G. Aartsen, M. Ackermann, J. Adams, J. A., Aguilar, M. Ahlers, M. Ahrens, D. Altmann, T. Anderson, C. Arguelles, T. C., Arlen, J. Auffenberg, X. Bai, S. W. Barwick, V. Baum, R. Bay, J. J. Beatty,, J. Becker Tjus, K.-H. Becker, S. BenZvi, P. Berghaus

TL;DR
This study analyzes four years of IceCube data to search for neutrino emissions from gamma-ray bursts, setting limits that challenge existing models and suggest GRBs contribute minimally to observed astrophysical neutrinos.
Contribution
First comprehensive four-year IceCube search for prompt neutrinos from GRBs, providing constraints that refine theoretical models and limit GRBs' contribution to astrophysical neutrinos.
Findings
Detected only one neutrino coincident with a GRB, consistent with background.
Limits on neutrino flux challenge many existing GRB models.
Less than 1% of astrophysical neutrinos originate from observable GRBs.
Abstract
We present constraints derived from a search of four years of IceCube data for a prompt neutrino flux from gamma-ray bursts (GRBs). A single low-significance neutrino, compatible with the atmospheric neutrino background, was found in coincidence with one of the 506 observed bursts. Although GRBs have been proposed as candidate sources for ultra-high energy cosmic rays, our limits on the neutrino flux disfavor much of the parameter space for the latest models. We also find that no more than of the recently observed astrophysical neutrino flux consists of prompt emission from GRBs that are potentially observable by existing satellites.
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