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IceCube searches for GeV neutrino counterparts associated with high-energy starting events

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dc.contributor.authorSchroeder, F.G.
dc.contributor.authorBontempo, F.
dc.contributor.authorAbbasi, R.
dc.contributor.authorAckermann, M.
dc.contributor.authorAdams, J.
dc.contributor.authorAgarwalla, S.K.
dc.contributor.authorAguilar, J.A.
dc.contributor.authorAhlers, M.
dc.contributor.authorAlameddine, J.M.
dc.contributor.authorAli, S.
dc.contributor.authorAmin, N.M.
dc.contributor.authorAndeen, K.
dc.contributor.authorArgüelles, C.
dc.contributor.authorAshida, Y.
dc.contributor.authorAthanasiadou, S.
dc.contributor.authorAxani, S.N.
dc.contributor.authorBabu, R.
dc.contributor.authorBai, X.
dc.contributor.authorBaines-Holmes, J.
dc.contributor.authorBalagopal, A.
dc.contributor.authoret al.
dc.contributor.conferenceInternational Cosmic Ray Conference (ICRC) (15 Jul 2025 - 24 Jul 2025 : Geneva, Switzerland)
dc.date.issued2025
dc.description.abstractThe origin of the astrophysical neutrino flux observed by IceCube is largely unknown. To help decipher its astrophysical origin, we propose an IceCube analysis that conducts follow-up searches for GeV neutrinos associated with neutrino events above 60 TeV, which are known to have a high probability to be of astrophysical origin. It could not only identify a new component of the astrophysical neutrino flux, but also characterize how its spectrum extrapolates from GeV to PeV energies. This would in turn give valuable insights into the internal processes of neutrino sources. Astrophysical transients, such as collapsars, have been proposed as sources of time-correlated GeV- and high-energy neutrinos. Conducting this search in such short time scales allows for a substantial reduction in the dominant background rate for GeV neutrino candidate events. We introduce the statistical method and sensitivity of this search as well as dedicated data quality checks. None of the searches yield statistically significant results, and we present the first limits on GeV neutrino emission associated to VHE neutrino events at short time scales.
dc.identifier.citationProceedings of Science, 2025, vol.501, pp.1150-1-1150-11
dc.identifier.doi10.22323/1.501.1150
dc.identifier.issn1824-8039
dc.identifier.urihttps://hdl.handle.net/2440/149724
dc.language.isoen
dc.publisherSissa Medialab
dc.publisher.placeItaly
dc.relation.grantARC
dc.rights© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).
dc.source.urihttps://doi.org/10.22323/1.501.1150
dc.subjectastrophysical
dc.subjectIceCube
dc.titleIceCube searches for GeV neutrino counterparts associated with high-energy starting events
dc.typeConference paper
pubs.publication-statusPublished

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