{
  "abstract": "Little red dots (LRDs) are an intriguing new class of sources in the early universe discovered by the James Webb Space Telescope (JWST) characterized by V-shaped spectra and extremely compact sizes. Their underlying mechanisms still remain the subject of ongoing debate. We present JWST observations of a gravitationally lensed LRD nicknamed \"Best Friend\" at $z_{\\rm spec} = 8.297\\pm0.002$. Its high magnification factor of $μ= 36^{+8}_{-12}$ makes it the highest magnified LRD reported to date and unveils both the resolved structure of its host and a central engine less than 7 pc in size. The spectrum of the central engine, in which broad lines are not detected, possibly owing to the limited S/N and spectral resolution, is better interpreted as black hole activity rather than a dense star cluster. The latter cannot be fully excluded, but if true, the resulting lower limit on stellar density would be $>1.25^{+0.4}_{-0.3}\\cdot10^6 \\mathrm{M_{\\odot}/pc}^2$, which is around 2 orders of magnitude higher than stellar densities of typical clusters at high-z. By performing a spatially resolved analysis of NIRCam photometry and NIRSpec/PRISM spectroscopy, we find that the host stellar mass is $\\log(M_\\star/M_{\\odot}) = 7.3^{+0.2}_{-0.8}$. Best Friend demonstrates the power of lensing to reveal the morphologies of LRDs.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.00202",
  "author_total": 27,
  "authors": [
    {
      "name": "Jon Judež"
    },
    {
      "name": "Roberta Tripodi"
    },
    {
      "name": "Nicholas S. Martis"
    },
    {
      "name": "Maruša Bradač"
    },
    {
      "name": "Rosa M. Mérida"
    },
    {
      "name": "Chris J. Willott"
    },
    {
      "name": "Guillaume Desprez"
    },
    {
      "name": "Vesna Pirc Jevšenak"
    },
    {
      "name": "Yoshihisa Asada"
    },
    {
      "name": "Gregor Rihtaršič"
    },
    {
      "name": "Lilan Yang"
    },
    {
      "name": "Roberto Abraham"
    },
    {
      "name": "Gabriel B. Brammer"
    },
    {
      "name": "Viicente Estrada-Carpenter"
    },
    {
      "name": "Jasleen Matharu"
    },
    {
      "name": "Lamiya A. Mowla"
    },
    {
      "name": "Adam Muzzin"
    },
    {
      "name": "Gaël Noirot"
    },
    {
      "name": "Ghassan T. E. Sarrouh"
    },
    {
      "name": "Marcin Sawicki"
    },
    {
      "name": "Sunna Withers"
    },
    {
      "name": "Jacqueline Antwi-Danso"
    },
    {
      "name": "Giordano Felicioni"
    },
    {
      "name": "Anishya Harshan"
    },
    {
      "name": "Vladan Markov"
    },
    {
      "name": "Maya Merchant"
    },
    {
      "name": "Visal Sok"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8h44dcszy9h6r.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.00202",
  "fulltext_url": null,
  "id": "8h44dcszy9h6r",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.00202",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.GA"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.00202",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8h44dcszy9h6r.ris",
  "sources": [
    {
      "first_seen": "2026-11-03T12:20:59Z",
      "native_id": "2611.00202",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.00202"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    }
  ],
  "title": "A Supermagnified Little Red Dot with a Resolved Host",
  "title_text": "A Supermagnified Little Red Dot with a Resolved Host",
  "type": "preprint",
  "updated_at": "2026-11-05T15:20:18Z",
  "url": "https://research.draconitic.com/paper/8h44dcszy9h6r",
  "venue": "arXiv",
  "versions": []
}