{
  "abstract": "Extended diffuse radio emission in the central regions of galaxy clusters is commonly associated with non-thermal processes in the intracluster medium (ICM), but its origin and the mechanisms responsible for sustaining it remain uncertain. We present the discovery and multi-wavelength analysis of two diffuse radio sources, MKTJ0355-4237 and MKTJ0355-4230, to assess their nature and investigate their radio spectral and magnetic field properties through radio polarimetric analysis. We use deep MeerKAT L-band (1.28 GHz) observations to perform spectral analysis of the diffuse emission and study its polarisation properties via rotation measure synthesis. These are complemented by eROSITA X-ray data and DESI photometric redshift catalogues to characterise the host cluster environments. MKTJ0355-4237 is confirmed as cluster-scale minihalo with extent of $\\sim 400$ kpc, while the other diffuse source MKTJ0355-4230 remain uncertain and could be either associated with a radio minihalo or radio tailed galaxy. Both show steep spectra ($α\\approx -0.7$ to $-0.8$) that steepen toward the outskirts ($α\\lesssim -2.5$), consistent with spatial variations in electron ageing and re-acceleration. Polarised emission is detected in both systems, with fractional polarisation $\\sim1\\,\\%$ in the centres and increasing in the outer regions of MKTJ0355-4237. MKTJ0355-4230 is associated with a previously uncatalogued cluster and shows an X-ray morphology offset from the brightest cluster galaxy, indicative of dynamical activity. MKTJ0355-4237 exhibits a sharply bounded internal radio deficit without a corresponding X-ray counterpart, within current sensitivity limits. The spectral steepening supports turbulent re-acceleration as the origin of the diffuse emission.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.18099",
  "author_total": 8,
  "authors": [
    {
      "name": "Sam Taziaux"
    },
    {
      "name": "Christopher J. Riseley"
    },
    {
      "name": "Stefan W. Duchesne"
    },
    {
      "name": "Francesca Loi"
    },
    {
      "name": "Alec J. M. Thomson"
    },
    {
      "name": "Aritra Basu"
    },
    {
      "name": "Timothy J. Galvin"
    },
    {
      "name": "Dominik J. Bomans"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5v3k5emeb0s10.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.18099",
  "fulltext_url": null,
  "id": "5v3k5emeb0s10",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.18099",
  "language": null,
  "licence": "CC-BY-SA-4.0",
  "licence_label": "CC BY-SA 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-sa/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.GA"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.18099",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-13",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/5v3k5emeb0s10.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:11Z",
      "native_id": "2610.18099",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.18099"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    }
  ],
  "title": "Radio ghosts: Radio polarimetry study of newly discovered cluster minihalo candidates or radio tailed galaxies",
  "title_text": "Radio ghosts: Radio polarimetry study of newly discovered cluster minihalo candidates or radio tailed galaxies",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:11Z",
  "url": "https://research.draconitic.com/paper/5v3k5emeb0s10",
  "venue": "arXiv",
  "versions": []
}