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arXiv, 2022

DOI: 10.48550/arxiv.2205.11410

American Astronomical Society, Astrophysical Journal, 2(939), p. 116, 2022

DOI: 10.3847/1538-4357/ac9785

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Searches for Neutrinos from Gamma-Ray Bursts Using the IceCube Neutrino Observatory

Journal article published in 2022 by Rasha Abbasi ORCID, Markus Ackermann ORCID, J. Adams, Juan Antonio Aguilar Sánchez, Markus Ahlers ORCID, M. Ahrens, Jean-Marco Alameddine ORCID, Antonio Augusto Alves ORCID, N. M. Amin, K. Andeen, J. A. Aguilar ORCID, T. Anderson, A. Balagopal V. ORCID, Gisela Anton ORCID, Yosuke Ashida ORCID and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Abstract Gamma-ray bursts (GRBs) are considered as promising sources of ultra-high-energy cosmic rays (UHECRs) due to their large power output. Observing a neutrino flux from GRBs would offer evidence that GRBs are hadronic accelerators of UHECRs. Previous IceCube analyses, which primarily focused on neutrinos arriving in temporal coincidence with the prompt gamma-rays, found no significant neutrino excess. The four analyses presented in this paper extend the region of interest to 14 days before and after the prompt phase, including generic extended time windows and targeted precursor searches. GRBs were selected between 2011 May and 2018 October to align with the data set of candidate muon-neutrino events observed by IceCube. No evidence of correlation between neutrino events and GRBs was found in these analyses. Limits are set to constrain the contribution of the cosmic GRB population to the diffuse astrophysical neutrino flux observed by IceCube. Prompt neutrino emission from GRBs is limited to ≲1% of the observed diffuse neutrino flux, and emission on timescales up to 104 s is constrained to 24% of the total diffuse flux.