{
  "abstract": "The so-called ``cosmic dipole tension'' challenges the Cosmological Principle by positing a discrepancy between the Solar System's peculiar velocity inferred from the Cosmic Microwave Background (CMB) dipole and that derived from large-scale structure number-count dipoles. Here we provide a high-precision determination of the kinematic dipole using the redshift-dipole method applied to the first data release (DR1) of the Dark Energy Spectroscopic Instrument (DESI). By exploiting the Doppler-induced modulation of observed redshifts, this estimator is intrinsically less sensitive to imaging systematics and selection-function uncertainties that can bias traditional number-count measurements. We conduct a tomographic analysis of four tracer populations, Bright Galaxy Sample, Luminous Red Galaxies, Emission Line Galaxies, and quasars, spanning $0.1<z<2.1$. Survey geometry and statistical uncertainties are quantified using 1,000 \\texttt{EZmock} realizations. We find that the high-redshift QSO sample implies a peculiar velocity of $v = 357.95_{-48.47}^{+55.05}\\,\\mathrm{km\\,s^{-1}}$, in excellent agreement with the CMB-inferred value of $369.82 \\pm 0.11\\,\\mathrm{km\\,s^{-1}}$. By contrast, a complementary number-count analysis yields a significantly enhanced dipole amplitude, which we attribute to leakage of large-scale power and to incompleteness within the DESI DR1 footprint. These results indicate that the redshift dipole provides a cleaner and more reliable probe of the kinematic rest frame, offering strong support for the standard kinematic interpretation at high redshift and helping to resolve the apparent dipole anomaly.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Phys. Rev. D 114, 043544, Published 24 August, 2026",
  "arxiv": "2608.30914",
  "author_total": 2,
  "authors": [
    {
      "name": "Yi-Wen Wu"
    },
    {
      "name": "Jun-Qing Xia"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fv2qr31ya9tvj.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2608.30914",
  "fulltext_url": null,
  "id": "fv2qr31ya9tvj",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2608.30914",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.CO"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2608.30914",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-02",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/fv2qr31ya9tvj.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:16Z",
      "native_id": "2608.30914",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2608.30914"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    }
  ],
  "title": "Measuring peculiar velocity and tomographic redshift dipole with DESI DR1 catalogs",
  "title_text": "Measuring peculiar velocity and tomographic redshift dipole with DESI DR1 catalogs",
  "type": "preprint",
  "updated_at": "2026-10-30T12:18:16Z",
  "url": "https://research.draconitic.com/paper/fv2qr31ya9tvj",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/kgvk-d4dw",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}