Details

Autor(en) / Beteiligte

• Furtak, Lukas J.
• Labbé, Ivo
• Zitrin, Adi
• Greene, Jenny E.
• Dayal, Pratika
• Chemerynska, Iryna
• Kokorev, Vasily
• Miller, Tim B.
• Goulding, Andy D.
• de Graaff, Anna
• Bezanson, Rachel
• Brammer, Gabriel B.
• Cutler, Sam E.
• Leja, Joel
• Pan, Richard
• Price, Sedona H.
• Wang, Bingjie
• Weaver, John R.
• Whitaker, Katherine E.
• Atek, Hakim
• Bogdán, Ákos
• Charlot, Stéphane
• Curtis-Lake, Emma
• van Dokkum, Pieter
• Endsley, Ryan
• Feldmann, Robert
• Fudamoto, Yoshinobu
• Fujimoto, Seiji
• Glazebrook, Karl
• Juneau, Stéphanie
• Marchesini, Danilo
• Maseda, Micheal V.
• Nelson, Erica
• Oesch, Pascal A.
• Plat, Adèle
• Setton, David J.
• Stark, Daniel P.
• Williams, Christina C.

Titel

A high black-hole-to-host mass ratio in a lensed AGN in the early Universe

Ist Teil von

• Nature (London), 2024-04, Vol.628 (8006), p.57-61

Ort / Verlag

London: Nature Publishing Group UK

Erscheinungsjahr

2024

Beschreibungen/Notizen

• Early JWST observations have uncovered a population of red sources that might represent a previously overlooked phase of supermassive black hole growth 1 – 3 . One of the most intriguing examples is an extremely red, point-like object that was found to be triply imaged by the strong lensing cluster Abell 2744 (ref.  4 ). Here we present deep JWST/NIRSpec observations of this object, Abell2744-QSO1. The spectroscopy confirms that the three images are of the same object, and that it is a highly reddened ( A V  ≃ 3) broad emission line active galactic nucleus at a redshift of z spec  = 7.0451 ± 0.0005. From the width of Hβ (full width at half-maximum = 2,800 ± 250 km s −1 ), we derive a black hole mass of M BH = 4 − 1 + 2 × 1 0 7 M ⊙ . We infer a very high ratio of black-hole-to-galaxy mass of at least 3%, an order of magnitude more than that seen in local galaxies 5 and possibly as high as 100%. The lack of strong metal lines in the spectrum together with the high bolometric luminosity ( L bol  = (1.1 ± 0.3) × 10 45  erg s −1 ) indicate that we are seeing the black hole in a phase of rapid growth, accreting at 30% of the Eddington limit. The rapid growth and high black-hole-to-galaxy mass ratio of Abell2744-QSO1 suggest that it may represent the missing link between black hole seeds 6 and one of the first luminous quasars 7 . JWST/NIRSpec observations of Abell2744-QSO1 show a high black-hole-to-host mass ratio in the early Universe, which indicates that we are seeing the black hole in a phase of rapid growth, accreting at 30% of the Eddington limit.