{
  "abstract": "Intermediate polars (IPs), a subclass of magnetic cataclysmic variables, often show discrepancies between white-dwarf (WD) mass measurements from X-ray spectral modeling and optical dynamical studies. We investigate the IP IGR J17014-4306. We performed a joint spectral analysis of NuSTAR observations combined with archival XMM-Newton and Swift data, modeling the broad-band X-ray spectrum with a multi-temperature cooling-flow model. Additionally, we obtained time-resolved optical spectroscopy with the SOAR telescope to measure the radial velocity of the donor star and constrain the system's orbital parameters. The X-ray spectral analysis reveals a very high post-shock plasma temperature of $kT_{\\max}=50_{-8}^{+11}\\,\\mathrm{keV}$, corresponding to a WD mass of $M_{\\mathrm{WD}}=0.94_{-0.07}^{+0.09}\\,M_\\odot$. We also fitted the NuSTAR spectrum above 10 keV with the ipolar30KK model, obtaining $M_{\\mathrm{WD}}=0.88_{-0.12}^{+0.14}\\,M_\\odot$. Our optical spectroscopy yields a radial-velocity semi-amplitude for the companion star of $K_2=165\\pm4\\,\\mathrm{km\\,s^{-1}}$ and an optical mass function of $f(M)=0.249\\pm0.018\\,M_\\odot$. Combined with the eclipse geometry and the WD mass estimate from the X-ray models, these results favor a high mass ratio, $0.76\\lesssim q\\lesssim0.95$, and a donor-star mass of approximately $0.67\\lesssim M_2/M_\\odot\\lesssim0.89$. In the limiting case of $q=1$, the WD mass has an upper limit of $1.14\\,M_\\odot$. Together with the X-ray measurements, this indicates a relatively massive WD. The lack of an independent measurement of the WD dynamical mass leaves it unclear whether the dynamical mass is consistent with the X-ray measurements or whether the X-ray mass is underestimated, as has been found for other IPs. Thus, our constraints make IGR J17014-4306 an important system for improving our understanding of IPs.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.06785",
  "author_total": 10,
  "authors": [
    {
      "name": "D. C. Souza"
    },
    {
      "name": "M. P. Diaz"
    },
    {
      "name": "A. S. Oliveira"
    },
    {
      "name": "G. J. M. Luna"
    },
    {
      "name": "C. V. Rodrigues"
    },
    {
      "name": "M. Reynolds"
    },
    {
      "name": "N. Palivanas"
    },
    {
      "name": "I. J. Lima"
    },
    {
      "name": "J. Mikołajewska"
    },
    {
      "name": "M. Orio"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fg25227nsrsm8.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.06785",
  "fulltext_url": null,
  "id": "fg25227nsrsm8",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.06785",
  "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",
      "astro-ph.HE"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.06785",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-04",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/fg25227nsrsm8.ris",
  "sources": [
    {
      "first_seen": "2026-11-05T15:20:56Z",
      "native_id": "2611.06785",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.06785"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    }
  ],
  "title": "Constraining the white-dwarf mass in the intermediate polar IGR J17014-4306 using X-ray and optical spectroscopy",
  "title_text": "Constraining the white-dwarf mass in the intermediate polar IGR J17014-4306 using X-ray and optical spectroscopy",
  "type": "preprint",
  "updated_at": "2026-11-09T00:20:21Z",
  "url": "https://research.draconitic.com/paper/fg25227nsrsm8",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1016/j.jheap.2026.100769",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}