{
  "abstract": "We present the discovery and analysis of the optically selected tidal disruption event (TDE) 2023mfm, which originates from a wandering massive black hole (MBH) in a massive ($\\sim 10^{11} \\,$M$_{\\odot}$) galaxy hosting a central low-luminosity active galactic nucleus (AGN). Our analysis of the ZTF, Lick, Keck, Swift, Chandra, XMM-Newton, HST, and VLA observations reveals that TDE 2023mfm is a TDE-H from a $10^{6.2 \\pm 0.5}\\,$M$_{\\odot}$ black hole which is offset by $0.66 \\pm 0.02$\" from the center of its host galaxy, corresponding to a projected distance of $1.08 \\pm 0.04$ kpc. TDE 2023mfm displays all the traits of optically selected TDEs. The emission remains hot, $T_{\\rm bb} \\sim 22,000 \\pm 1,000$ K, for more than a month after peak, and the $g$-band light curve peaks at $\\left( 2.24^{+0.10} _{-0.11} \\right) \\times 10^{43} \\, \\rm erg \\, s^{-1}$ and stays above half-maximum luminosity for $47.8^{+3.7}_{-3.5}$ days. The late-time optical-to-UV emission observed with the HST suggests the presence of an unresolved stellar population with a stellar mass of $10^7-10^8\\,$M$_{\\odot}$ at the position of the TDE, possibly being a low-mass dwarf galaxy or a stripped galaxy from a previous minor merger. The radio emission from TDE 2023mfm emerges at least a year after optical discovery, and we find it likely that it originates from a delayed outflow, however, further observations are needed to determine its true origin.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.35998",
  "author_total": 27,
  "authors": [
    {
      "name": "Itai Sfaradi"
    },
    {
      "name": "Ryan Chornock"
    },
    {
      "name": "Yuhan Yao"
    },
    {
      "name": "Erica Hammerstein"
    },
    {
      "name": "Jean Somalwar"
    },
    {
      "name": "Raffaella Margutti"
    },
    {
      "name": "Huei Sears"
    },
    {
      "name": "Robert Stein"
    },
    {
      "name": "Natalie LeBaron"
    },
    {
      "name": "Adelle J. Goodwin"
    },
    {
      "name": "Sjoert van Velzen"
    },
    {
      "name": "Matthew J. Graham"
    },
    {
      "name": "Kate D. Alexander"
    },
    {
      "name": "Nayana A. J."
    },
    {
      "name": "Edo Berger"
    },
    {
      "name": "Jonathan Carney"
    },
    {
      "name": "Yvette Cendes"
    },
    {
      "name": "Collin T. Christy"
    },
    {
      "name": "Walter W. Golay"
    },
    {
      "name": "Wenbin Lu"
    },
    {
      "name": "James C. A. Miller-Jones"
    },
    {
      "name": "Charlotte Ward"
    },
    {
      "name": "Eli Wiston"
    },
    {
      "name": "Tracy X. Chen"
    },
    {
      "name": "Mansi M. Kasliwal"
    },
    {
      "name": "Frank J. Masci"
    },
    {
      "name": "Jesper Sollerman"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ee91srssmn8am.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.35998",
  "fulltext_url": null,
  "id": "ee91srssmn8am",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.35998",
  "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"
    ],
    [
      "arxiv",
      "astro-ph.HE"
    ],
    [
      "openalex",
      "3103|Astrophysical Phenomena and Observations"
    ]
  ],
  "openalex": "W7214903012",
  "pdf_url": "https://arxiv.org/pdf/2609.35998",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/ee91srssmn8am.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:31Z",
      "native_id": "2609.35998",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.35998"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    }
  ],
  "title": "An Off-Nuclear Tidal Disruption Event Discovered At Late Times: The Case Of TDE 2023mfm",
  "title_text": "An Off-Nuclear Tidal Disruption Event Discovered At Late Times: The Case Of TDE 2023mfm",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:31Z",
  "url": "https://research.draconitic.com/paper/ee91srssmn8am",
  "venue": "arXiv",
  "versions": []
}