{
  "abstract": "Type-I superluminous supernovae (SLSNe) are extremely luminous stellar explosions originating from the core collapse of massive stars. Unlike normal core-collapse supernovae, however, SLSNe occur almost exclusively in metal-poor environments. As a result, their volumetric rate should not simply trace the cosmic star-formation history, but instead evolve with the metallicity distribution of galaxies across cosmic time. In this work, we introduce a new theoretical framework for modeling the volumetric rate of astrophysical sources as a function of redshift and metallicity. Our formalism combines metallicity scaling relations, stellar-mass distribution functions, and metallicity-dependent production efficiencies. Importantly, it also distinguishes between metallicity measures based on O/H and Fe/H abundances. Applying our new formalism to SLSNe, we predict volumetric rates that are nearly an order of magnitude higher at $z \\gtrsim 2$ compared to models in which the rate traces the cosmic star-formation rate alone. This has direct implications on the detection prospects of high-$z$ SLSNe with the Vera C. Rubin Observatory and other time-domain surveys.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.38299",
  "author_total": 7,
  "authors": [
    {
      "name": "Ben Margalit"
    },
    {
      "name": "Allison L. Strom"
    },
    {
      "name": "Cristina Andrade"
    },
    {
      "name": "Michael W. Coughlin"
    },
    {
      "name": "Adam A. Miller"
    },
    {
      "name": "Steve Schulze"
    },
    {
      "name": "Ved G. Shah"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8kq2a16gy8vke.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.38299",
  "fulltext_url": null,
  "id": "8kq2a16gy8vke",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.38299",
  "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"
    ],
    [
      "openalex",
      "3103|Gamma-ray bursts and supernovae"
    ]
  ],
  "openalex": "W7215044205",
  "pdf_url": "https://arxiv.org/pdf/2609.38299",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-29",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8kq2a16gy8vke.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:48Z",
      "native_id": "2609.38299",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.38299"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    }
  ],
  "title": "Not So Heavy Metal I: Low Metallicity Enhances the Rate of high-redshift Superluminous Supernovae",
  "title_text": "Not So Heavy Metal I: Low Metallicity Enhances the Rate of high-redshift Superluminous Supernovae",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:48Z",
  "url": "https://research.draconitic.com/paper/8kq2a16gy8vke",
  "venue": "arXiv",
  "versions": []
}