{
  "abstract": "We present an analysis of the polarized synchrotron emission at the power-spectrum level in the multipole range 30 ≤ ℓ < 130, using the recent QUIJOTE-MFI wide survey (10–20 GHz) in combination with Planck and WMAP data. The EE and BB power spectra are well described by a simple power-law model, with no evidence for the need of additional parameters. The best-fit slopes are αEE = −3.24 ± 0.12 and αEE = −3.81 ± 0.34 for |b| > 20○, hinting toward a steepening of the BB spectrum relative to EE at the ∼1.6σ level. The synchrotron frequency spectral indices are found to be $\\beta _{\\rm s}^{\\rm EE} = -3.26 \\pm 0.05$ and $\\beta _{\\rm s}^{\\rm BB} = -3.25 \\pm 0.10$ for the same cut, in agreement with earlier real-space analyses. We find no evidence for spatial variations of βs across different Galactic latitude cuts, within current uncertainties. The synchrotron BB/EE power ratio is approximately 0.2 over the considered multipole range, lower than typical values for thermal dust, and consistent with previous measurements. We also measure a dust-synchrotron spatial correlation in the range 0.1–0.25 over 30 ≤ ℓ < 130. Using these results, we estimate the level of synchrotron contamination in future CMB B-mode measurements, finding an average power in the considered sky masks equivalent to r ≃ 0.003 at 90 GHz and r ≃ 0.0002 at 150 GHz for the relevant angular scales.",
  "abstract_shown": true,
  "affiliations": [
    "Instituto de Astrofísica de Canarias , E-38205 La Laguna, Tenerife ,",
    "Universidad de La Laguna (ULL) Departamento de Astrofísica, , E-38206 La Laguna, Tenerife ,",
    "Instituto de Física de Cantabria (IFCA) , CSIC-Univ. de Cantabria, Avda. los Castros, s/n, E-39005 Santander ,",
    "Astrophysics Group, Cavendish Laboratory, University of Cambridge , J J Thomson Avenue, Cambridge CB3 0HE ,",
    "Kavli Institute for Cosmology, University of Cambridge , Madingley Road, Cambridge CB3 0HA ,",
    "Universidad de Oviedo , Departamento de Matemáticas, C. Federico García Lorca 18, 33007 Oviedo ,",
    "Instituto Universitario de Ciencias y Tecnologías Espaciales de Asturias (ICTEA) , C. Independencia 13, 33004 Oviedo ,",
    "Consejo Superior de Investigaciones Científicas , E-28006 Madrid ,",
    "Universidad de Córdoba Departamento de Física. Facultad de Ciencias. . Campus de Rabanales, Edif. C2. Planta Baja. E-14071 Córdoba ,",
    "Xi’an Jiaotong–Liverpool University, 111 Ren’ai Road, Suzhou Dushu Lake Science and Education Innovation District Department of Physics, , Suzhou Industrial Park, Suzhou 215123 ,",
    "School of Natural Sciences, The University of Manchester Jodrell Bank Centre for Astrophysics, Alan Turing Building, Department of Physics and Astronomy, , Oxford Road, Manchester M13 9PL, Manchester ,"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 22,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "F Vansyngel"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "J A Rubiño-Martín"
    },
    {
      "affs": [
        1
      ],
      "name": "P de Ferra"
    },
    {
      "affs": [
        2
      ],
      "name": "R B Barreiro"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "R T Génova-Santos"
    },
    {
      "affs": [
        2
      ],
      "name": "B Casaponsa"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "M Fernández-Torreiro"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "D Adak"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "K Aryan"
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    {
      "affs": [
        3,
        4
      ],
      "name": "M Ashdown"
    },
    {
      "affs": [
        5,
        6
      ],
      "name": "J M Casas"
    },
    {
      "affs": [
        2
      ],
      "name": "F J Casas"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "R Cepeda-Arroita"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "A Fasano"
    },
    {
      "affs": [
        2
      ],
      "name": "D Herranz",
      "orcid": "0000-0003-4540-1417"
    },
    {
      "affs": [
        2
      ],
      "name": "E Martínez-González"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "F Poidevin",
      "orcid": "0000-0002-5391-5568"
    },
    {
      "affs": [
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        1,
        7
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      "name": "R Rebolo"
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    {
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        0,
        1
      ],
      "name": "B Ruiz-Granados"
    },
    {
      "affs": [
        9,
        0,
        1
      ],
      "name": "D Tramonte"
    },
    {
      "affs": [
        2
      ],
      "name": "P Vielva"
    },
    {
      "affs": [
        10
      ],
      "name": "R A Watson"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2abhape72ecdt.bib",
  "cited_by": 0,
  "doi": "10.1093/mnras/stag2031",
  "fulltext_url": null,
  "id": "2abhape72ecdt",
  "issns": [
    "0035-8711",
    "1365-2966"
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  "landing_url": "https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/stag2031/8997908",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
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  "native_subjects": [
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      "openalex",
      "3103|Cosmology and Gravitation Theories"
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  "pdf_url": "https://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stag2031/72481621/stag2031.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-24",
  "publisher": "Oxford University Press (OUP)",
  "ris": "https://research.draconitic.com/paper/2abhape72ecdt.ris",
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    {
      "first_seen": "2026-10-30T12:18:17Z",
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      "field": "astronomy",
      "origin": "openalex:3103|Cosmology and Gravitation Theories",
      "subfield": "cosmology"
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  ],
  "title": "QUIJOTE scientific results – XII. Characterization of the polarized synchrotron emission at the power spectrum level in the QUIJOTE-MFI wide survey",
  "title_text": "QUIJOTE scientific results – XII. Characterization of the polarized synchrotron emission at the power spectrum level in the QUIJOTE-MFI wide survey",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:17Z",
  "url": "https://research.draconitic.com/paper/2abhape72ecdt",
  "venue": "Monthly Notices of the Royal Astronomical Society",
  "versions": []
}