{
  "abstract": "Recent gravitational-wave (GW) observations have revealed binary black hole (BBH) mergers with both extreme mass ratios and large effective spin parameters ($χ_{\\rm{eff}}$). GW241011 is a notable example that shows these properties. Although hierarchical mergers (second-generation + first-generation BHs) can naturally produce high spins and become more prevalent than first-generation + first-generation mergers at mass ratios $q \\lesssim 0.6$, they are negligible at the extreme mass ratio $\\sim 0.3$ and are further limited by gravitational recoil kicks that can eject the second-generation BH from the host environment. Moreover, recent studies have argued against a dynamical origin for GW241011. Here, we investigate the formation of GW241011-like systems through the mass-ratio reversal (MRR) channel in isolated binary evolution. By quantifying the probability of producing such systems across a range of binary-evolution models, we identify the key dependencies on stellar-evolution and binary-interaction physics. Our results demonstrate the conditions under which the MRR channel can provide a viable alternative to hierarchical mergers for GW241011-like events, although its predicted merger rate density remains relatively low.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2606.27852",
  "author_total": 3,
  "authors": [
    {
      "name": "Rui-Chong Hu"
    },
    {
      "name": "Ying Qin"
    },
    {
      "name": "Bing Zhang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8h9bhs3y037zn.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.27852",
  "fulltext_url": null,
  "id": "8h9bhs3y037zn",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2606.27852",
  "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.HE"
    ],
    [
      "arxiv",
      "astro-ph.SR"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2606.27852",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-10",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8h9bhs3y037zn.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:20:26Z",
      "native_id": "2606.27852",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.27852"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.SR",
      "subfield": "stellar"
    }
  ],
  "title": "Mass-Ratio Reversal as an Alternative to Hierarchical Mergers for GW241011",
  "title_text": "Mass-Ratio Reversal as an Alternative to Hierarchical Mergers for GW241011",
  "type": "preprint",
  "updated_at": "2026-10-30T12:20:26Z",
  "url": "https://research.draconitic.com/paper/8h9bhs3y037zn",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.3847/2041-8213/aea21b",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}