{
  "abstract": "Experimental constraints on the diffuse neutrino flux above the PeV range have been obtained with Cherenkov neutrino telescopes, air-shower arrays, radio detectors in and above polar ice, and radio observations of the Moon. Published results use different flavor, energy-bin, and statistical conventions, so their flux limits cannot be combined directly. We reconstruct energy-dependent exposures of the published searches and place them in a common convention for the total all-flavor $ν+\\barν$ flux over $10^{16}$-$10^{26}$ eV. Published event counts and expected backgrounds are combined with a Poisson likelihood, and 90% C.L. quasi-differential limits are obtained for one-decade $E_ν^{-1}$ test spectra using a one-sided profile-likelihood construction. Folding theoretical spectra of cosmogenic neutrinos and selected new-physics scenarios with the combined energy-dependent exposure yields constraints on their flux normalizations. This homogeneous analysis provides a reproducible observational benchmark across ten decades in neutrino energy and a common reference for current and projected searches.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.36632",
  "author_total": 1,
  "authors": [
    {
      "name": "S. V. Troitsky"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3xmgn2b9b58pe.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.36632",
  "fulltext_url": null,
  "id": "3xmgn2b9b58pe",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.36632",
  "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": "W7214999927",
  "pdf_url": "https://arxiv.org/pdf/2609.36632",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-29",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3xmgn2b9b58pe.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:31Z",
      "native_id": "2609.36632",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.36632"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    }
  ],
  "title": "Combined constraints on the diffuse flux of cosmic neutrinos between 10^16 eV and 10^26 eV",
  "title_text": "Combined constraints on the diffuse flux of cosmic neutrinos between 10^16 eV and 10^26 eV",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:31Z",
  "url": "https://research.draconitic.com/paper/3xmgn2b9b58pe",
  "venue": "arXiv",
  "versions": []
}