{
  "abstract": "We report the detection of a short optical burst in TESS data of IGR J17014-4306, the eclipsing intermediate polar with the longest known orbital period. The burst lasts 1.56 d and shows multiple peaks, reaching $(9.3 \\pm 0.2) \\times 10^{33}$ erg s$^{-1}$, and releases a total energy of $(3.25 \\pm 0.01) \\times 10^{38}$ erg. The burst parameters are consistent with those of a micronova eruption, currently understood as a thermonuclear runaway in the magnetically-confined accretion column. From its energy, we infer a burned column mass of $\\sim 1.6 \\times 10^{-11}$ M$_\\odot$, which implies a recurrence time of $\\sim 20$ d. Our search for similar events in long-term Gaia, ASAS-SN, and AAVSO light curves reveals 16 possible fast brightenings over $\\sim 11$ yr, suggesting that micronova events may be frequent in IGR J17014-4306. Timing analysis of the TESS data shows that the white-dwarf spin period remains stable before and after the burst. During the burst, however, the power spectrum becomes more complex and exhibits multiple peaks. The classification of IGR J17014-4306 as a micronova brings the total number of confirmed systems to eight. Its extreme orbital period and eclipsing nature make it an ideal test-bed for further studies of magnetically confined thermonuclear burning on white dwarfs.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Mon Not R Astron Soc (2026)",
  "arxiv": "2606.06305",
  "author_total": 4,
  "authors": [
    {
      "name": "Alexandre S. Oliveira"
    },
    {
      "name": "D. C. Souza"
    },
    {
      "name": "G. J. M. Luna"
    },
    {
      "name": "C. V. Rodrigues"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/cx6tz4wwkjqrk.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.06305",
  "fulltext_url": null,
  "id": "cx6tz4wwkjqrk",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2606.06305",
  "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/2606.06305",
  "pmcid": null,
  "pmid": null,
  "published": "2026-06-04",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/cx6tz4wwkjqrk.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:00Z",
      "native_id": "2606.06305",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.06305"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.SR",
      "subfield": "stellar"
    }
  ],
  "title": "A micronova burst in the intermediate polar IGR J17014-4306",
  "title_text": "A micronova burst in the intermediate polar IGR J17014-4306",
  "type": "preprint",
  "updated_at": "2026-10-30T12:18:00Z",
  "url": "https://research.draconitic.com/paper/cx6tz4wwkjqrk",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1093/mnras/stag1579",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}