---
res:
  bibo_abstract:
  - 'The abundant population of little red dots (LRDs), compact objects with red UV
    to optical colors and broad Balmer lines at high redshift, is revealing new insights
    into the properties of early active galactic nuclei (AGN). Perhaps the most surprising
    features of this population are the presence of Balmer absorption and ubiquitous
    strong Balmer breaks. Recent models link these features to an active supermassive
    black hole (SMBH) cocooned in very dense gas (NH ∼ 1024 cm−2). We present a stringent
    test of such models using VLT/MUSE observations of A2744-45924, the most luminous
    LRD known to date (LHα ≈ 1044 erg s−1), located behind the Abell-2744 lensing
    cluster at z = 4.464 (μ = 1.8). We detect a moderately extended Lyα nebula (h ≈ 5.7
    pkpc), spatially offset from the point-like Hα seen by JWST by ≈1.6 pkpc. The
    Lyα emission is narrow (FWHM = 270 ± 15 km s−1), and faint (Lyα = 0.07Hα) compared
    to Lyα nebulae typically observed around quasars of similar luminosity. We detect
    compact N IV]λ1486 emission, spatially aligned with Hα, and a spatial shift in
    the far-UV continuum matching the Lyα offset. We discuss that Hα and Lyα have
    distinct physical origins: Hα originates from the AGN, while Lyα is powered by
    star formation. In the environment of A2744-45924, we identified four extended
    Lyα halos (Δz < 0.02, Δr < 100 pkpc). Their Lyα luminosities match the expectations
    based on Hα emission, and show no evidence for radiation from A2744-45924 affecting
    its surroundings. The lack of strong, compact, and broad Lyα and the absence of
    a luminous extended halo, suggest that the UV AGN light is obscured by dense gas
    cloaking the SMBH with a covering factor close to unity.@eng'
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Alberto
      foaf_name: Torralba Torregrosa, Alberto
      foaf_surname: Torralba Torregrosa
      foaf_workInfoHomepage: http://www.librecat.org/personId=018f0249-0e87-11f0-b167-cbce08fbd541
    orcid: 0000-0001-5586-6950
  - foaf_Person:
      foaf_givenName: Jorryt J
      foaf_name: Matthee, Jorryt J
      foaf_surname: Matthee
      foaf_workInfoHomepage: http://www.librecat.org/personId=7439a258-f3c0-11ec-9501-9df22fe06720
    orcid: 0000-0003-2871-127X
  - foaf_Person:
      foaf_givenName: Gabriele
      foaf_name: Pezzulli, Gabriele
      foaf_surname: Pezzulli
  - foaf_Person:
      foaf_givenName: Tanya
      foaf_name: Urrutia, Tanya
      foaf_surname: Urrutia
  - foaf_Person:
      foaf_givenName: Max
      foaf_name: Gronke, Max
      foaf_surname: Gronke
  - foaf_Person:
      foaf_givenName: Sara
      foaf_name: Mascia, Sara
      foaf_surname: Mascia
      foaf_workInfoHomepage: http://www.librecat.org/personId=edaf889c-c7cd-11ef-ab1b-bb28c431bd29
  - foaf_Person:
      foaf_givenName: Francesco
      foaf_name: D’Eugenio, Francesco
      foaf_surname: D’Eugenio
  - foaf_Person:
      foaf_givenName: Claudia
      foaf_name: Di Cesare, Claudia
      foaf_surname: Di Cesare
      foaf_workInfoHomepage: http://www.librecat.org/personId=2d002343-372f-11ef-98ec-a164d20427cb
  - foaf_Person:
      foaf_givenName: Anna Christina
      foaf_name: Eilers, Anna Christina
      foaf_surname: Eilers
  - foaf_Person:
      foaf_givenName: Jenny E.
      foaf_name: Greene, Jenny E.
      foaf_surname: Greene
  - foaf_Person:
      foaf_givenName: Edoardo
      foaf_name: Iani, Edoardo
      foaf_surname: Iani
      foaf_workInfoHomepage: http://www.librecat.org/personId=4053390a-6b68-11ef-9828-a3b8adef8d0a
    orcid: 0000-0001-8386-3546
  - foaf_Person:
      foaf_givenName: Yuzo
      foaf_name: Ishikawa, Yuzo
      foaf_surname: Ishikawa
  - foaf_Person:
      foaf_givenName: Ruari
      foaf_name: Mackenzie, Ruari
      foaf_surname: Mackenzie
  - foaf_Person:
      foaf_givenName: Rohan P.
      foaf_name: Naidu, Rohan P.
      foaf_surname: Naidu
  - foaf_Person:
      foaf_givenName: Benjamín
      foaf_name: Navarrete, Benjamín
      foaf_surname: Navarrete
      foaf_workInfoHomepage: http://www.librecat.org/personId=aa14a535-50c9-11ef-b52e-e0c373d10148
  - foaf_Person:
      foaf_givenName: Gauri
      foaf_name: Kotiwale, Gauri
      foaf_surname: Kotiwale
      foaf_workInfoHomepage: http://www.librecat.org/personId=1438afc8-1ff6-11ee-9fa6-cd4a75d66875
  bibo_doi: 10.1051/0004-6361/202555596
  bibo_volume: 705
  dct_date: 2026^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/0004-6361
  - http://id.crossref.org/issn/1432-0746
  dct_language: eng
  dct_publisher: EDP Sciences@
  dct_title: A weak Ly α halo for an extremely bright little red dot. Indications
    of enshrouded supermassive black hole growth@
...