{
  "abstract": "We have developed techniques for a competitive sub-TeV time-integrated neutrino search and applied it to 11.1 years of IceCube-DeepCore data. The DeepCore subarray lowers the sensitivity of IceCube down to sub-TeV energies and is especially interesting for objects with soft spectra. Three studies were performed: a search for neutrino emission from AGN exhibiting high intrinsic X-ray flux, including NGC 1068, as identified by SWIFT/BAT; a search for neutrino emission from Galactic objects identified by Fermi-LAT as exhibiting a spectral shape consistent with neutral pion decay; and an all-sky search for neutrino point sources. Objects for this study were selected given their prospects for sub-TeV neutrino emission. No evidence for sub-TeV neutrino emission is found in any of the searches performed. Finally, for each catalog of objects, we use a statistical combination of the p-values via a binomial test to search for aggregated neutrino emission from a subset of the objects. Neither of the binomial tests yields significant results. For NGC 1068, assuming a power law spectrum with index 3.4, the 90% confidence level upper limit on per-flavor neutrino emission in the 30--400 GeV range is $Φ_{ν+\\barν}|_{\\mathrm{1 TeV}} < 9.5 \\times 10^{-11}$ TeV$^{-1}$ cm$^{-2}$ s$^{-1}$, a factor of two higher than the extrapolation of IceCube's measurement at higher energies. We additionally provide neutrino flux upper limits for a variety of spectra.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.12055",
  "author_total": 421,
  "authors": [
    {
      "name": "R. Abbasi"
    },
    {
      "name": "M. Ackermann"
    },
    {
      "name": "J. Adams"
    },
    {
      "name": "J. A. Aguilar"
    },
    {
      "name": "M. Ahlers"
    },
    {
      "name": "J. M. Alameddine"
    },
    {
      "name": "S. Ali"
    },
    {
      "name": "N. M. Amin"
    },
    {
      "name": "K. Andeen"
    },
    {
      "name": "C. Argüelles"
    },
    {
      "name": "S. Athanasiadou"
    },
    {
      "name": "S. N. Axani"
    },
    {
      "name": "R. Babu"
    },
    {
      "name": "X. Bai"
    },
    {
      "name": "A. Balagopal V."
    },
    {
      "name": "S. W. Barwick"
    },
    {
      "name": "V. Basu"
    },
    {
      "name": "R. Bay"
    },
    {
      "name": "J. J. Beatty"
    },
    {
      "name": "J. Becker Tjus"
    },
    {
      "name": "P. Behrens"
    },
    {
      "name": "J. Beise"
    },
    {
      "name": "C. Bellenghi"
    },
    {
      "name": "S. Benkel"
    },
    {
      "name": "S. BenZvi"
    },
    {
      "name": "D. Berley"
    },
    {
      "name": "E. Bernardini"
    },
    {
      "name": "D. Z. Besson"
    },
    {
      "name": "E. Blaufuss"
    },
    {
      "name": "L. Bloom"
    },
    {
      "name": "S. Blot"
    },
    {
      "name": "F. Bontempo"
    },
    {
      "name": "J. Y. Book Motzkin"
    },
    {
      "name": "C. Boscolo Meneguolo"
    },
    {
      "name": "S. Böser"
    },
    {
      "name": "O. Botner"
    },
    {
      "name": "J. Böttcher"
    },
    {
      "name": "J. Braun"
    },
    {
      "name": "B. Brinson"
    },
    {
      "name": "Z. Brisson-Tsavoussis"
    },
    {
      "name": "L. Brusa"
    },
    {
      "name": "R. T. Burley"
    },
    {
      "name": "D. Butterfield"
    },
    {
      "name": "K. Carloni"
    },
    {
      "name": "J. Carpio"
    },
    {
      "name": "N. Chau"
    },
    {
      "name": "Y. C. Chen"
    },
    {
      "name": "Z. Chen"
    },
    {
      "name": "D. Chirkin"
    },
    {
      "name": "S. Choi"
    },
    {
      "name": "A. Chubarov"
    },
    {
      "name": "B. A. Clark"
    },
    {
      "name": "D. A. Coloma Borja"
    },
    {
      "name": "A. Connolly"
    },
    {
      "name": "J. M. Conrad"
    },
    {
      "name": "D. F. Cowen"
    },
    {
      "name": "C. De Clercq"
    },
    {
      "name": "J. J. DeLaunay"
    },
    {
      "name": "D. Delgado"
    },
    {
      "name": "T. Delmeulle"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7fhv4qw81x8wa.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.12055",
  "fulltext_url": null,
  "id": "7fhv4qw81x8wa",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.12055",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.HE"
    ],
    [
      "openalex",
      "3106|Astrophysics and Cosmic Phenomena"
    ]
  ],
  "openalex": "W7212523733",
  "pdf_url": "https://arxiv.org/pdf/2609.12055",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-10",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/7fhv4qw81x8wa.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:07Z",
      "native_id": "2609.12055",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.12055"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    }
  ],
  "title": "Time-Integrated Searches for Sub-TeV Neutrino Sources with IceCube-DeepCore",
  "title_text": "Time-Integrated Searches for Sub-TeV Neutrino Sources with IceCube-DeepCore",
  "type": "preprint",
  "updated_at": "2026-10-30T12:21:07Z",
  "url": "https://research.draconitic.com/paper/7fhv4qw81x8wa",
  "venue": "arXiv",
  "versions": []
}