{
  "abstract": "Long-term variability and possible quasi-periodic oscillations (QPOs) in blazars provide a potential probe of the physical processes governing relativistic jets and their central engines. We investigated the γ-ray variability of 4FGL J0038.2−2459 using Fermi−LAT observations from 2008 August 5 to 2025 November 20. We applied the Lomb–Scargle periodogram, phase dispersion minimization, and weighted wavelet Z-transform to the 3-day binned light curve. The analyses identify a possible modulation with a characteristic period of 269.8 ± 5.8 days. The feature is associated with the MJD 57700–59800 active interval, which spans approximately eight cycles. Calibration of the LSP matched-profile statistic against 105 first-order autoregressive [AR(1)] red-noise simulations gives the possible oscillation a local significance of 3.43 σ within the selected active interval. We further explored a supermassive black hole binary (SMBHB)-driven jet-precession scenario as one possible interpretation. Under the adopted model assumptions, the observed modulation corresponds to an intrinsic jet-precession period of ∼9.9 yr and implies a binary orbital period of ∼96 days.",
  "abstract_shown": true,
  "affiliations": [
    "School of Physical Science and Technology, Southwest Jiaotong University , Chengdu, Sichuan Province, 611756 ,",
    "The Key Laboratory of Cosmic Rays (Xizang University) , Ministry of Education, Lhasa 850000 ,",
    "Laboratory of Particle Astrophysics, Fuyang Normal University , Fuyang 236037 ,"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Jin Min"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Fengrong Zhu"
    },
    {
      "affs": [
        2
      ],
      "name": "Peng Zong"
    },
    {
      "affs": [
        2
      ],
      "name": "Bingkai Zhang",
      "orcid": "0000-0002-6499-4935"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8pj7se3mqrfnb.bib",
  "cited_by": 0,
  "doi": "10.1093/mnras/stag2029",
  "fulltext_url": null,
  "id": "8pj7se3mqrfnb",
  "issns": [
    "0035-8711",
    "1365-2966"
  ],
  "landing_url": "https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/stag2029/9003261",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "3106|Astrophysics and Cosmic Phenomena"
    ]
  ],
  "openalex": "W7223976441",
  "pdf_url": "https://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stag2029/72541911/stag2029.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-27",
  "publisher": "Oxford University Press (OUP)",
  "ris": "https://research.draconitic.com/paper/8pj7se3mqrfnb.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:17Z",
      "native_id": "10.1093/mnras/stag2029",
      "source": "crossref",
      "url": "https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/stag2029/9003261"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3106|Astrophysics and Cosmic Phenomena",
      "subfield": "high-energy"
    }
  ],
  "title": "A candidate ∼270-d γ-ray periodic modulation in the FSRQ 4FGL J0038.2−2459",
  "title_text": "A candidate ∼270-d γ-ray periodic modulation in the FSRQ 4FGL J0038.2−2459",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:17Z",
  "url": "https://research.draconitic.com/paper/8pj7se3mqrfnb",
  "venue": "Monthly Notices of the Royal Astronomical Society",
  "versions": []
}