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Constraining the contribution of gamma-ray bursts to the high-energy diffuse neutrino flux with 10 yr of ANTARES data

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10.1093/mnras/staa3503
 
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hdl:2117/343172

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Albert, A.
André, MichelMés informacióMés informacióMés informació
Anghinolfi, Marco
Anton, Gisela
Ardid Ramírez, Miguel
Aubert, J.-J.
Aublin, J.
Baret, Bruny
Basa, S.
Document typeArticle
Defense date2021-02-01
PublisherOxford University Press
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
Addressing the origin of the astrophysical neutrino flux observed by IceCube is of paramount importance. Gamma-Ray Bursts (GRBs) are among the few astrophysical sources capable of achieving the required energy to contribute to such neutrino flux through p¿ interactions. In this work, ANTARES data have been used to search for upward going muon neutrinos in spatial and temporal coincidence with 784 GRBs occurred from 2007 to 2017. For each GRB, the expected neutrino flux has been calculated in the framework of the internal shock model and the impact of the lack of knowledge on the majority of source redshifts and on other intrinsic parameters of the emission mechanism has been quantified. It is found that the model parameters that set the radial distance where shock collisions occur have the largest impact on neutrino flux expectations. In particular, the bulk Lorentz factor of the source ejecta and the minimum variability timescale are found to contribute significantly to the GRB-neutrino flux uncertainty. For the selected sources, ANTARES data have been analysed, by maximising the discovery probability of the stacking sample through an extended maximum-likelihood strategy. Since no neutrino event passed the quality cuts set by the optimisation procedure, 90 % confidence level upper limits (with their uncertainty) on the total expected diffuse neutrino flux have been derived, according to the model. The GRB contribution to the observed diffuse astrophysical neutrino flux around 100 TeV is constrained to be less than 10 %.
CitationAlbert, A. [et al.]. Constraining the contribution of gamma-ray bursts to the high-energy diffuse neutrino flux with 10 yr of ANTARES data. "Montly Notices of the Royal Astronomical Society", 1 Febrer 2021, vol. 500, núm. 4, p. 5614-5628. 
URIhttp://hdl.handle.net/2117/343172
DOI10.1093/mnras/staa3503
ISSN1365-2966
Publisher versionhttps://academic.oup.com/mnras/article-abstract/500/4/5614/6006278
Other identifiershttps://arxiv.org/abs/2008.02127
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  • LAB - Laboratori d'Aplicacions Bioacústiques - Articles de revista [117]
  • Centre Tecnològic de Vilanova i la Geltrú - Articles de revista [131]
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