{
  "abstract": "We present the first deep, targeted LOFAR 144 MHz source catalogue of the COSMOS field, together with the first 144 MHz source counts in this field. The data comprise 48 h of observations. Over the 2.6 sq. deg. region adopted for the catalogue analysis, the final Dutch-array image reaches a median rms sensitivity of ~100 uJy/beam at an angular resolution of 15\" x 6\". The resulting catalogue contains 1984 radio sources; a peak S/N >= 5 selection is adopted for the resolved/unresolved classification and source-count analysis. We characterised the catalogue using Monte Carlo source-injection and recovery simulations, including dedicated simulations of extended sources, to quantify completeness, flux-density redistribution, and morphology-dependent source-recovery effects. The catalogue reaches 90% completeness at 1.48 mJy. The resulting Euclidean-normalised differential source counts are measured down to ~0.4 mJy and show good agreement with LoTSS DR3 144 MHz source counts and with the VLA-COSMOS 3 GHz counts scaled to 144 MHz, with ~5% of catalogue sources having multiple 3 GHz counterparts within a beam-matched search region. Comparison with the VLA-COSMOS 3 GHz catalogue shows good astrometric agreement, with median offsets of Delta_RA = 0.35\" (+0.03\"/-0.05\") and Delta_Dec = -0.83\" (+0.02\"/-0.03\"), approximately 6% of the corresponding synthesised-beam dimensions, and no significant radial dependence across the field. The resulting catalogue provides a low-frequency view of COSMOS and a reference dataset for future deeper LOFAR observations and multiwavelength studies of this extensively characterised extragalactic field.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.18648",
  "author_total": 21,
  "authors": [
    {
      "name": "E. Vardoulaki"
    },
    {
      "name": "T. Shimwell"
    },
    {
      "name": "M. J. Hardcastle"
    },
    {
      "name": "L. Doukas"
    },
    {
      "name": "L. K. Morabito"
    },
    {
      "name": "C. L. Hale"
    },
    {
      "name": "M. T. Sargent"
    },
    {
      "name": "V. Smolčić"
    },
    {
      "name": "G. Zamorani"
    },
    {
      "name": "G. Gozaliasl"
    },
    {
      "name": "F. An"
    },
    {
      "name": "M. Aravena"
    },
    {
      "name": "A. L. Faisst"
    },
    {
      "name": "M. Vaccari"
    },
    {
      "name": "E. Treister"
    },
    {
      "name": "A. Finoguenov"
    },
    {
      "name": "P. Best"
    },
    {
      "name": "J. S. Kartaltepe"
    },
    {
      "name": "C. Casey"
    },
    {
      "name": "S. Jin"
    },
    {
      "name": "V. Mainieri"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/f5w7d88rj3z2g.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.18648",
  "fulltext_url": null,
  "id": "f5w7d88rj3z2g",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.18648",
  "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.GA"
    ],
    [
      "openalex",
      "3103|Radio Astronomy Observations and Technology"
    ]
  ],
  "openalex": "W7221826103",
  "pdf_url": "https://arxiv.org/pdf/2610.18648",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-13",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/f5w7d88rj3z2g.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:11Z",
      "native_id": "2610.18648",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.18648"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    }
  ],
  "title": "Cosmic Evolution Survey: LOFAR 144 MHz imaging of the COSMOS field",
  "title_text": "Cosmic Evolution Survey: LOFAR 144 MHz imaging of the COSMOS field",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:11Z",
  "url": "https://research.draconitic.com/paper/f5w7d88rj3z2g",
  "venue": "arXiv",
  "versions": []
}