{
  "abstract": "We present the first dark matter density profile derived directly from James Webb Space Telescope JADES Data Release~3 NIRSpec observations of $N = 587$ galaxies spanning the cosmic noon epoch $1.5 \\leq z \\leq 3.5$. From each NIRSpec G235M/G395M spectrum we extract the H$α$ emission-line velocity dispersion $σ_{\\rm ha}$, stack galaxies in four redshift bins of $Δz = 0.5$, and reconstruct representative group rotation curves within the General Theory of Relativity. Fitting the four-parameter modified exponential model and deriving the exact GTR energy density, we reduce the profile to a compact $[2/3]$ Padé approximant with all coefficients determined in closed form from JWST observations. The profile is cusp-free, fully analytic, and redshift-dependent. Energy conditions, causality, and orbital stability are all satisfied. Most strikingly, the central density $ρ(0)$ varies by less than $15\\%$ across $z = 1.5$--$3.5$ despite a $35\\%$ decline in the asymptotic rotation velocity, revealing a universal dark matter core saturation density at cosmic noon decoupled from baryonic evolution.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.14071",
  "author_total": 2,
  "authors": [
    {
      "name": "Aritra Sanyal"
    },
    {
      "name": "Farook Rahaman"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3nsy3wgz270sy.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.14071",
  "fulltext_url": null,
  "id": "3nsy3wgz270sy",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.14071",
  "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",
      "gr-qc"
    ],
    [
      "openalex",
      "3103|Galaxies: Formation, Evolution, Phenomena"
    ]
  ],
  "openalex": "W7213351634",
  "pdf_url": "https://arxiv.org/pdf/2609.14071",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-06",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3nsy3wgz270sy.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:22Z",
      "native_id": "2609.14071",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.14071"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    },
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    }
  ],
  "title": "The New Dark Matter Density Profile from JWST JADES Galaxies",
  "title_text": "The New Dark Matter Density Profile from JWST JADES Galaxies",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:22Z",
  "url": "https://research.draconitic.com/paper/3nsy3wgz270sy",
  "venue": "arXiv",
  "versions": []
}