{
  "abstract": "Although coronal mass ejections (CMEs) potentially play an important role in shaping the habitability of exoplanets, the firm detection of flaring-associated CMEs on remote stars remains a challenge task at current stage. We here report time-resolved spectroscopic follow-up observations of a superflare (GWAC~251130A) on an M-dwarf, triggered by the SVOM/GWAC high-cadence transient survey. With an amplitude of $\\approx2.5$~mag in $R-$band, the bolometric flaring energy is estimated to be $1.2^{+1.0}_{-0.5}\\times10^{35}$~erg. The spectroscopy reveals complex flare-associated plasma motions. A stellar CME candidate on the M-dwarf can be identified on the M~dwarf at high confidence, based on its maximum projected velocity ($V_{\\mathrm{max}}\\sim1500\\ \\mathrm{km\\ s^{-1}}$) measured from the blueshifted broad H$α$ emission line-the second highest among all reported stellar CME candidates. This velocity makes GWAC~251130A one of the only two events with a $V_\\mathrm{max}$ exceeding twice the surface escape velocity. Both chromospheric evaporation and condensation can be additionally identified in the flare after the broad-line emission fades away. The CME mass and corresponding kinetic energy along the line-of-sight are estimated to be $\\sim3.2\\times10^{19}$~g and $\\sim2.1\\times10^{32}$~erg, respectively, which reinforces the slightly larger expelled mass with depressed kinetic energy in stellar CME than in the solar flare-CME events.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.41452",
  "author_total": 17,
  "authors": [
    {
      "name": "J. Wang"
    },
    {
      "name": "J. R. Xu"
    },
    {
      "name": "Y. N. Ma"
    },
    {
      "name": "S. Jin"
    },
    {
      "name": "L. J. Wang"
    },
    {
      "name": "Y. Xu"
    },
    {
      "name": "L. P. Xin"
    },
    {
      "name": "G. W. Li"
    },
    {
      "name": "Y. N. Zhu"
    },
    {
      "name": "H. Yang"
    },
    {
      "name": "X. H. Han"
    },
    {
      "name": "H. L. Li"
    },
    {
      "name": "Z. G. Dai"
    },
    {
      "name": "E. W. Liang"
    },
    {
      "name": "X. Y. Wang"
    },
    {
      "name": "C. Wu"
    },
    {
      "name": "J. Y. Wei"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7xzvjdrp4rvex.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.41452",
  "fulltext_url": null,
  "id": "7xzvjdrp4rvex",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.41452",
  "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.SR"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.41452",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-30",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/7xzvjdrp4rvex.ris",
  "sources": [
    {
      "first_seen": "2026-11-02T12:21:15Z",
      "native_id": "2610.41452",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.41452"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.SR",
      "subfield": "stellar"
    }
  ],
  "title": "Identifying a High-confidence Candidate of Stellar Coronal Mass Ejection on an M~dwarf",
  "title_text": "Identifying a High-confidence Candidate of Stellar Coronal Mass Ejection on an M~dwarf",
  "type": "preprint",
  "updated_at": "2026-11-04T15:20:51Z",
  "url": "https://research.draconitic.com/paper/7xzvjdrp4rvex",
  "venue": "arXiv",
  "versions": []
}