{
  "abstract": "We present the first detailed forecasts for the detectability of patchy hydrogen reionization in the one-dimensional Ly$α$ forest power spectrum to be measured by the WEAVE-QSO survey. Using the Sherwood-relics reionization simulations and a WEAVE-QSO survey configuration, we generate mock spectra in four redshift bins, $z=4.0,4.2,4.4,$ and $4.6$, in which relic ionization and temperature fluctuations from patchy hydrogen reionization enhance the Ly$α$ forest power spectrum on large scales (i.e., at wavenumber $k\\sim 10^{-3},\\mathrm{s\\,km^{-1}}$). Our Ly$α$ forest pipeline forecasts the power spectrum covariance by considering sample size, spectral resolution, noise subtraction, continuum placement, metal contamination, and damping wings from high-column density absorbers. Applying our covariance forecast within a Bayesian parameter inference framework, we find that the signature of patchy hydrogen reionization should be detectable at a significance of $\\simeq 4.5σ$. The forthcoming WEAVE-QSO 1D power spectrum measurements should therefore be able to directly detect and characterize the large-scale relic imprint of patchy hydrogen reionization in the Ly$α$ forest power spectrum at $z\\geq 4$.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2608.13153",
  "author_total": 12,
  "authors": [
    {
      "name": "Ke Ma"
    },
    {
      "name": "James S Bolton"
    },
    {
      "name": "Vid Iršič"
    },
    {
      "name": "Prakash Gaikwad"
    },
    {
      "name": "Matthew M Pieri"
    },
    {
      "name": "Trystyn A.M Berg"
    },
    {
      "name": "Rajeshwari Dutta"
    },
    {
      "name": "Matteo Fossati"
    },
    {
      "name": "Michele Fumagalli"
    },
    {
      "name": "Emanuel Gafton"
    },
    {
      "name": "Ignasi Pérez Ràfols"
    },
    {
      "name": "Francesco Pistis"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9kgqqbt9q40z0.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2608.13153",
  "fulltext_url": null,
  "id": "9kgqqbt9q40z0",
  "issns": [],
  "landing_url": "https://hal.science/hal-05758446v1",
  "language": "en",
  "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.CO"
    ],
    [
      "hal",
      "0.phys"
    ],
    [
      "hal",
      "1.phys.astr"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2608.13153",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9kgqqbt9q40z0.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:37Z",
      "native_id": "hal-05758446",
      "source": "hal",
      "url": "https://hal.science/hal-05758446v1"
    },
    {
      "first_seen": "2026-11-03T12:21:04Z",
      "native_id": "2608.13153",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2608.13153"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    },
    {
      "field": "physics",
      "origin": "hal:0.phys",
      "subfield": "general"
    }
  ],
  "title": "Forecast for the detectability of patchy hydrogen reionization in WEAVE-QSO measurements of the Lyman-$α$ forest power spectrum at redshift $z \\geq 4$",
  "title_text": "Forecast for the detectability of patchy hydrogen reionization in WEAVE-QSO measurements of the Lyman-α forest power spectrum at redshift z ≥ 4",
  "type": "preprint",
  "updated_at": "2026-11-05T15:20:21Z",
  "url": "https://research.draconitic.com/paper/9kgqqbt9q40z0",
  "venue": "HAL",
  "versions": [
    {
      "doi": "10.1093/mnras/stag2028",
      "pid": "5gkjx327jkfqq",
      "relation": "published-as",
      "title": "Forecast for the detectability of patchy hydrogen reionization in WEAVE-QSO measurements of the Lyman-α forest power spectrum at redshift z ≥ 4",
      "venue": "Monthly Notices of the Royal Astronomical Society"
    }
  ]
}