{
  "abstract": "We present a multi-frequency polarimetric study of the radio-quiet Seyfert galaxy NGC 4235 using the upgraded Giant Metrewave Radio Telescope (uGMRT), aimed at constraining the Faraday rotation properties of its kpc-scale radio emission. This marks the first-ever analysis of polarization across two frequency bands of the uGMRT and the first constraints on rotation measure (RM) at lower frequencies for a weak radio source (17.1$\\pm$1.7 mJy at 1.3 GHz, 27.7$\\pm$2.8 mJy at 663 MHz). We detect linearly polarized radio emission associated with the `core' and the extended lobes of NGC 4235. Broadband polarimetric analysis yields an RM value of {$\\sim200$ rad m$^{-2}$} in the `core', indicating Faraday rotation by magnetized plasma external to the synchrotron-emitting regions. Using these RM constraints, we estimate an average electron density of the Faraday-rotating medium of $\\sim$3$\\times10^{-2}$ cm$^{-3}$ for a characteristic perturbation scale of $\\sim$0.3 parsec within an assumed magnetized region of size $\\sim$1.3 kpc, consistent with a diffuse magnetized sheath or AGN-driven wind. These results extend classical Faraday rotation diagnostics to the low-power, radio-quiet AGN regime and demonstrate the potential of uGMRT broadband polarimetry for probing magnetized environments in and around such AGN.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.10726",
  "author_total": 3,
  "authors": [
    {
      "name": "Salmoli Ghosh"
    },
    {
      "name": "Preeti Kharb"
    },
    {
      "name": "Janhavi Baghel"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0d0tz6s5949mk.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.10726",
  "fulltext_url": null,
  "id": "0d0tz6s5949mk",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.10726",
  "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",
      "3103|Astrophysical Phenomena and Observations"
    ]
  ],
  "openalex": "W7221182354",
  "pdf_url": "https://arxiv.org/pdf/2610.10726",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-07",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/0d0tz6s5949mk.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:54Z",
      "native_id": "2610.10726",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.10726"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    }
  ],
  "title": "First uGMRT Constraints on Rotation Measure in the Radio-Quiet Seyfert Galaxy NGC 4235",
  "title_text": "First uGMRT Constraints on Rotation Measure in the Radio-Quiet Seyfert Galaxy NGC 4235",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:54Z",
  "url": "https://research.draconitic.com/paper/0d0tz6s5949mk",
  "venue": "arXiv",
  "versions": []
}