{
  "abstract": "We present a multiwavelength investigation of radio sources in the globular cluster M22 (NGC 6656) using the Karl G. Jansky Very Large Array, Chandra, and Hubble Space Telescope. By crossmatching the radio and X-ray source catalogs, we identify eight radio/X-ray counterparts, of which VLA22 is the most promising stellar-mass black hole (BH) candidate. Its radio and X-ray luminosities are consistent with the established L X − L R correlation for BH low-mass X-ray binaries. The observed X-ray variability supports an accreting nature. One possible optical counterpart ( M ₈₁₄ ≈ 16.695 ± 0.011 mag) is identified. Based on its inferred stellar parameters, the estimated orbital period of P orb ∼ 16 ± 6 h places the proposed counterpart predominantly in the BH region rather than in the neutron star (NS) region in the L X − P orb plane. These results demonstrate the effectiveness of joint radio, X-ray, and optical observations in identifying quiescent BH candidates in globular clusters.",
  "abstract_shown": true,
  "affiliations": [
    "Xiamen University",
    "Shanghai Astronomical Observatory",
    "Nanjing Normal University",
    "University of Science and Technology of China"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Yu-Jing 雨婧 Xu 徐",
      "orcid": "0009-0000-3830-9650"
    },
    {
      "affs": [
        0
      ],
      "name": "Wei-Min 为民 Gu 顾",
      "orcid": "0000-0003-3137-1851"
    },
    {
      "affs": [
        1
      ],
      "name": "Yuanqi 媛琪 Liu 刘",
      "orcid": "0000-0001-9321-6000"
    },
    {
      "affs": [
        0
      ],
      "name": "Xin-Yu 欣雨 Fang 方",
      "orcid": "0009-0001-6886-8397"
    },
    {
      "affs": [
        2
      ],
      "name": "Shan-Shan 山杉 Weng 翁",
      "orcid": "0000-0001-7595-1458"
    },
    {
      "affs": [
        3
      ],
      "name": "Tao 涛 An 安",
      "orcid": "0000-0003-4341-0029"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fwjbmspsf8qx6.bib",
  "cited_by": 0,
  "doi": "10.3847/1538-4357/aea795",
  "fulltext_url": null,
  "id": "fwjbmspsf8qx6",
  "issns": [
    "0004-637X",
    "1538-4357"
  ],
  "landing_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea795",
  "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",
      "3103|Astrophysical Phenomena and Observations"
    ]
  ],
  "openalex": "W7222981701",
  "pdf_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea795/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-19",
  "publisher": "American Astronomical Society",
  "ris": "https://research.draconitic.com/paper/fwjbmspsf8qx6.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:11Z",
      "native_id": "10.3847/1538-4357/aea795",
      "source": "crossref",
      "url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea795"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "journal-openalex:3103|Stellar, planetary, and galactic studies",
      "subfield": "stellar"
    }
  ],
  "title": "Searching for Black Hole Candidates in Quiescence by Using Multiband Observations in Globular Cluster M22 (NGC 6656)",
  "title_text": "Searching for Black Hole Candidates in Quiescence by Using Multiband Observations in Globular Cluster M22 (NGC 6656)",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:11Z",
  "url": "https://research.draconitic.com/paper/fwjbmspsf8qx6",
  "venue": "The Astrophysical Journal",
  "versions": []
}