{
  "abstract": "Cosmic noon ($z\\sim2$) marks the peak epoch of cosmic star formation and black hole accretion activity, where strong accretion and outflows are expected. We report two candidate absorption features in the \\textit{XMM-Newton} spectrum of the quasar WISEA~J094835.95+432302.6 at $z=1.893$. Two redshifted features occur at rest-frame energies of $\\sim4.65$ and $\\sim5.75$keV with confidence levels of 99.3% and 94.1%, respectively, estimated from Monte Carlo (MC) simulations considering the look-elsewhere effect. These features can be explained by the Fe XXV/XXVI K-shell transitions from one ultra-fast inflow (UFI) with an apparent velocity of $0.37^{+0.02}_{-0.01}c$. If confirmed by follow-up \\textit{XMM-Newton} observations, these detections would extend reported UFI candidates from the local Universe to cosmic noon, offering a rare laboratory for black hole accretion at the peak of their growth.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.10267",
  "author_total": 17,
  "authors": [
    {
      "name": "Yerong Xu"
    },
    {
      "name": "Xiurui Zhao"
    },
    {
      "name": "Elena Bertola"
    },
    {
      "name": "Valentina Braito"
    },
    {
      "name": "Francesca Civano"
    },
    {
      "name": "Luca Comisso"
    },
    {
      "name": "Luigi Gallo"
    },
    {
      "name": "Vittoria E. Gianolli"
    },
    {
      "name": "Elias Kammoun"
    },
    {
      "name": "Giorgio Lanzuisi"
    },
    {
      "name": "Stefano Marchesi"
    },
    {
      "name": "Mar Mezcua"
    },
    {
      "name": "Ciro Pinto"
    },
    {
      "name": "James N. Reeves"
    },
    {
      "name": "Daniele Rogantini"
    },
    {
      "name": "Núria Torres-Albà"
    },
    {
      "name": "Lizhong Zhang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/b1w4y0224v4rf.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.10267",
  "fulltext_url": null,
  "id": "b1w4y0224v4rf",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.10267",
  "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.HE"
    ],
    [
      "openalex",
      "3103|Astrophysical Phenomena and Observations"
    ]
  ],
  "openalex": "W7221031296",
  "pdf_url": "https://arxiv.org/pdf/2610.10267",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-07",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/b1w4y0224v4rf.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:37Z",
      "native_id": "2610.10267",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.10267"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    }
  ],
  "title": "A relativistic inflow candidate in a quasar at cosmic noon",
  "title_text": "A relativistic inflow candidate in a quasar at cosmic noon",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:37Z",
  "url": "https://research.draconitic.com/paper/b1w4y0224v4rf",
  "venue": "arXiv",
  "versions": []
}