{
  "abstract": "We present $\\texttt{EccHybIMR22}$, a fully analytical $\\textbf{Ecc}$entric-$\\textbf{Hyb}$rid-$\\textbf{I}$nspiral-$\\textbf{M}$erger-$\\textbf{R}$ingdown model for the quadrupole ($\\ell$=$2$, $|m|$=$2$ or simply the $\\textbf{22}$) mode. The model is obtained by smoothly attaching an eccentric-inspiral to a quasi-circular-merger-ringdown prescription and is trained on eccentric numerical relativity (NR) simulations with mass ratios $q\\leq 10$. In particular, we focus on obtaining a model that is sensitive to large mass ratios ($q>3$). Leveraging the recent expansion of SXS catalog of NR simulations, we construct a set of 91 hybrids (obtained by combining waveforms from post-Newtonian (PN) theory with NR simulations) with a target low total mass limit ($M_{\\rm low}$) of $20M_{\\odot}$ at an averaged 22 mode frequency of 20Hz, inaccessible with existing NR simulations alone. Employing a little less than a third of these hybrids as targets, we construct $\\texttt{EccHybIMR22}$ and recover $65\\%$ of the hybrids from the remaining set with mismatches smaller than $\\sim3\\%$ for a total mass of $40M_\\odot$ (chosen arbitrarily) and orbital eccentricity $e_{\\rm 20Hz}\\lesssim0.33$ ($e_{\\rm 20Hz}\\lesssim 0.12$) for mass ratios $q\\leq3$ ($q>3$). Furthermore, when tested against 175 SXS simulations, the model is able to recover nearly $80\\%$ of the simulations with similar mismatches for systems with $0\\lesssim e^{\\rm NR}_{\\rm 20Hz}\\lesssim 0.3$.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.16958",
  "author_total": 3,
  "authors": [
    {
      "name": "Pratul Manna"
    },
    {
      "name": "Tamal RoyChowdhury"
    },
    {
      "name": "Chandra Kant Mishra"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9pqmn2aj0xdd0.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.16958",
  "fulltext_url": null,
  "id": "9pqmn2aj0xdd0",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.16958",
  "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",
      "gr-qc"
    ],
    [
      "openalex",
      "3103|Pulsars and Gravitational Waves Research"
    ]
  ],
  "openalex": "W7221835823",
  "pdf_url": "https://arxiv.org/pdf/2610.16958",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-12",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9pqmn2aj0xdd0.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:06Z",
      "native_id": "2610.16958",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.16958"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    }
  ],
  "title": "Large mass-ratio ($3< q \\leq 10$) inspiral-merger-ringdown model for eccentric binary black holes",
  "title_text": "Large mass-ratio (3< q ≤ 10) inspiral-merger-ringdown model for eccentric binary black holes",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:06Z",
  "url": "https://research.draconitic.com/paper/9pqmn2aj0xdd0",
  "venue": "arXiv",
  "versions": []
}