{
  "abstract": "We present the first targeted Einstein Probe (EP) X-ray observations of any planetary nebula (PN). Using the onboard Follow-up X-ray Telescope (FXT), we detect X-ray emission within the central region of IC 1297. The spectral analysis yields a plasma temperature of $kT = 0.086^{+0.054}_{-0.058}$ keV ($T\\sim1.0 \\times 10^{6}$ K), characteristic of shocked wind bubbles in PNe, whereas there is no evidence that its Wolf-Rayet central star emits X-rays. The absorption-corrected X-ray luminosity in the 0.3--2.0 keV energy band is $L_{\\mathrm{X}} = 2.8 \\times 10^{32}$ erg s$^{-1}$, also consistent with a hot bubble. At an adopted distance of $\\sim3.8$ kpc, IC 1297 is the most distant X-ray emitting PN found to date, opening up a new observational window on hot-bubble formation and evolution. It is also among the most luminous known X-ray-emitting PNe. Our results demonstrate the capability of the EP FXT for detecting and characterizing faint, extended X-ray sources in the soft X-ray band for distant PNe, extending the known spectral properties of detectable X-ray emitting PNe. We also compiled the X-ray properties of all 41 known Galactic XPNe, finding a clear correlation between distance and X-ray luminosity that reflects an observational bias toward detecting the brightest sources at large distances. The compilation also shows a separation in X-ray luminosity between hot bubbles powered by H-rich and [WR]-type central stars, with the latter reaching luminosities up to an order of magnitude higher. The ten most luminous XPNe all host [WR]/PG 1159 central stars.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.17741",
  "author_total": 3,
  "authors": [
    {
      "name": "H. Yuan"
    },
    {
      "name": "Q. A. Parker"
    },
    {
      "name": "M. A. Guerrero"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2abxwz5htvrt1.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.17741",
  "fulltext_url": null,
  "id": "2abxwz5htvrt1",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.17741",
  "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.GA"
    ],
    [
      "arxiv",
      "astro-ph.HE"
    ],
    [
      "arxiv",
      "astro-ph.SR"
    ],
    [
      "openalex",
      "3103|Stellar, planetary, and galactic studies"
    ]
  ],
  "openalex": "W7221778851",
  "pdf_url": "https://arxiv.org/pdf/2610.17741",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-13",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/2abxwz5htvrt1.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:04Z",
      "native_id": "2610.17741",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.17741"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.SR",
      "subfield": "stellar"
    }
  ],
  "title": "IC 1297: The Most Distant Known X-ray Planetary Nebula and One of the Most Luminous",
  "title_text": "IC 1297: The Most Distant Known X-ray Planetary Nebula and One of the Most Luminous",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:04Z",
  "url": "https://research.draconitic.com/paper/2abxwz5htvrt1",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.3847/1538-4357/aeb40b",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}