{
  "abstract": "Context: Superbursts are energetic explosions in the crusts of neutron stars in Low-Mass X-ray Binaries (LMXBs). At temperatures above 4 GK, photodisintegration of heavy rp-process ashes may play a major role alongside $^{12}$C fusion. Aims: We investigate how photodisintegration of rp-process ashes affects superburst properties and the initial $^{12}$C abundance required for ignition. Methods: We simulate superbursts with MESA v.24.08.1. Besides the canonical fuel of $20\\%$ $^{12}$C and $80\\%$ $^{56}$Fe, we test different $^{12}$C abundances mixed with scaled rp-process ashes. Results: Superbursts can ignite with only $10\\%$ $^{12}$C when the remaining $90\\%$ consists of rp-process ashes. Their luminosity is comparable to that of the canonical fuel, whereas $10\\%$ $^{12}$C mixed with $90\\%$ $^{56}$Fe yields lower luminosity. $^{56}$Fe remains the most abundant ash nuclide. Although photodisintegration drives nucleosynthesis, neutron, proton and alpha captures release energy at late times. We also find that $A=64$ nuclides or $^{20}$Ne help reduce the $^{12}$C abundance needed for ignition. Conclusions: The composition of accreted material - not just its $^{12}$C content - substantially affects superburst ignition, luminosity and nucleosynthesis.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.28049",
  "author_total": 3,
  "authors": [
    {
      "name": "M. Nava-Callejas"
    },
    {
      "name": "S. Goriely"
    },
    {
      "name": "N. Chamel"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fxakxhfbr7p8a.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.28049",
  "fulltext_url": null,
  "id": "fxakxhfbr7p8a",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.28049",
  "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",
      "3103|Gamma-ray bursts and supernovae"
    ]
  ],
  "openalex": "W7223157682",
  "pdf_url": "https://arxiv.org/pdf/2610.28049",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-20",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/fxakxhfbr7p8a.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:04Z",
      "native_id": "2610.28049",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.28049"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.SR",
      "subfield": "stellar"
    }
  ],
  "title": "On the superbursts as photodisintegrators of ashes from the rp-process -- Numerical simulations of superbursts with MESA II",
  "title_text": "On the superbursts as photodisintegrators of ashes from the rp-process -- Numerical simulations of superbursts with MESA II",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:04Z",
  "url": "https://research.draconitic.com/paper/fxakxhfbr7p8a",
  "venue": "arXiv",
  "versions": []
}