Size matters: are we witnessing super-Eddington accretion in high-redshift black holes from JWST?

Abstract

Observations by the James Webb Space Telescope of the Universe at $z\gtrsim 4$ have shown that massive black holes (MBHs) appear extremely overmassive compared to the local correlation for active galactic nuclei. In some cases, these objects might even reach half the stellar mass inferred for the galaxy. Understanding how such objects formed and grew to this masses has then become a big challenge for theoretical models, with different ideas ranging from heavy seed to super-Eddington accretion phases. Here, we take a different approach, and try to infer how accurate these MBH mass estimates are and whether we really need to revise our physical models. By considering how the emerging spectrum (both the continuum and the broad lines) of an accreting MBH changes close to and above the Eddington limit, we infer a much larger uncertainty in the MBH mass estimates relative to that of local counterparts, up to an order of magnitude, and a potential preference for lower masses and higher accretion rates, which i) move them closer to the local correlations, and ii) might indicate that we are witnessing for the first time a widespread phase of very rapid accretion.

arXiv comment8 pages, 5 figures, submitted to A&A

References in corpus (38)

• emcee: The MCMC Hammer
• The Dust Content and Opacity of Actively Star-Forming Galaxies
• Local Supermassive Black Holes, Relics of Active Galactic Nuclei and the X-ray Background
• A luminous quasar at a redshift of z = 7.085
• An 800-million-solar-mass black hole in a significantly neutral Universe at redshift 7.5
• Relations Between Central Black Hole Mass and Total Galaxy Stellar Mass in the Local Universe
• The Low-Luminosity End of the Radius-Luminosity Relationship for Active Galactic Nuclei
• Estimating Black Hole Masses in Active Galaxies Using the Halpha Emission Line
• The Assembly of the First Massive Black Holes
• Dwarf Galaxies with Optical Signatures of Active Massive Black Holes
• A Survey of z>5.7 Quasars in the Sloan Digital Sky Survey IV: Discovery of Seven Additional Quasars
• Mass Functions of the Active Black Holes in Distant Quasars from the Large Bright Quasar Survey, the Bright Quasar Survey, and the Color-Selected Sample of the SDSS Fall Equatorial Stripe
• An ALMA [CII] survey of 27 quasars at z>5.94
• GA-NIFS: A massive black hole in a low-metallicity AGN at $z\sim 5.55$ revealed by JWST/NIRSpec IFS
• The origins of massive black holes
• Black Holes on FIRE: Stellar Feedback Limits Early Feeding of Galactic Nuclei
• Super-Critical Growth of Massive Black Holes from Stellar-Mass Seeds
• Supermassive black holes with high accretion rates in active galactic nuclei: I. First results from a new reverberation mapping campaign
• The Sloan Digital Sky Survey Reverberation Mapping Project: H$\alpha$ and H$\beta$ Reverberation Measurements From First-year Spectroscopy and Photometry
• Evolution of supermassive stars as a pathway to black hole formation
• Quasistars: Accreting black holes inside massive envelopes
• Super-Eddington growth of the first black holes
• Growing massive black holes through super-critical accretion of stellar-mass seeds
• Quasistars and the cosmic evolution of massive black holes
• The effect of nuclear gas distribution on the mass determination of supermassive black holes
• Self-shadowing Effects of Slim Accretion Disks in Active Galactic Nuclei: Diverse Appearance of the Broad-line Region
• The X-shooter/ALMA Sample of Quasars in the Epoch of Reionization. II. Black Hole Masses, Eddington Ratios, and the Formation of the First Quasars
• Super-Eddington Accretion and Feedback from the First Massive Seed Black Holes
• EIGER V. Characterizing the Host Galaxies of Luminous Quasars at $z\gtrsim 6$
• Supermassive Black Hole Formation at High Redshifts via Direct Collapse: Physical Processes in the Early Stage
• Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs). XIII. Large-scale Feedback and Star Formation in a Low-Luminosity Quasar at z = 7.07 on the Local Black Hole to Host Mass Relation
• Can reverberation-measured quasars be used for cosmology?
• How the super-Eddington regime regulates black hole growth in high-redshift galaxies
• A dynamical measure of the black hole mass in a quasar 11 billion years ago
• Modelling the spectral energy distribution of super-Eddington quasars
• Sustained super-Eddington accretion in high-redshift quasars
• Cosmic radiation backgrounds from primordial black holes
• The orientation dependence of quasar spectral energy distributions

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• The early Universe with JWST and ALMA
• The Cliff: A Metal-Poor Little Red Dot Hosting an Overmassive Black Hole at $z=3.55$
• Super-Eddington accretion in high-redshift quasar hosts: Black-hole driven outflows, galaxy quenching, and the nature of little red dots
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