{
  "abstract": "Radio detection of very inclined extensive air showers (EAS) offers a promising way to study ultra-high-energy cosmic rays (UHECRs) and neutrinos above $10^{17}$ eV. We present a method to reconstruct the arrival direction and energy of EAS with zenith angles above $60^\\circ$, applicable in principle to upward-going neutrino-induced showers. The approach combines a point-source-like description of the radio wavefront with the Angular Distribution Function (ADF), a phenomenological model describing the angular pattern of electric field amplitudes in the 50-200 MHz band. On realistic cosmic-ray simulations, we achieve better than $0.07^\\circ$ resolution on arrival direction and ~15\\% on primary energy. Applied directly to voltage traces, this method allows efficient cosmic-ray selection with accurate direction reconstruction and first-order energy estimation. We illustrate the method on the first cosmic-ray candidates detected by the GRANDProto300 prototype of GRAND, validating its detection principle and paving the way for high-precision neutrino searches.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.36282",
  "author_total": 6,
  "authors": [
    {
      "name": "Marion Guelfand"
    },
    {
      "name": "Valentin Decoene"
    },
    {
      "name": "Olivier Martineau"
    },
    {
      "name": "Simon Prunet"
    },
    {
      "name": "Sebastian Castro-Isern"
    },
    {
      "name": "Nathan Lebas"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7ygj258yyvhfg.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.36282",
  "fulltext_url": null,
  "id": "7ygj258yyvhfg",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.36282",
  "language": null,
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.HE"
    ],
    [
      "arxiv",
      "astro-ph.IM"
    ],
    [
      "openalex",
      "3106|Astrophysics and Cosmic Phenomena"
    ]
  ],
  "openalex": "W7224108849",
  "pdf_url": "https://arxiv.org/pdf/2610.36282",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-26",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/7ygj258yyvhfg.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:50Z",
      "native_id": "2610.36282",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.36282"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.IM",
      "subfield": "instrumentation-methods"
    }
  ],
  "title": "Reconstruction of very inclined air showers with radio data and application to the first GRANDProto300 cosmic-ray candidates",
  "title_text": "Reconstruction of very inclined air showers with radio data and application to the first GRANDProto300 cosmic-ray candidates",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:50Z",
  "url": "https://research.draconitic.com/paper/7ygj258yyvhfg",
  "venue": "arXiv",
  "versions": []
}