High-redshift quasars and the supermassive black hole mass budget: constraints on quasar formation models

@article{Bromley2004HighredshiftQA,
  title={High-redshift quasars and the supermassive black hole mass budget: constraints on quasar formation models},
  author={Jane M. Bromley and Rachel S Somerville and Andrew C. Fabian},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2004},
  volume={350},
  pages={456-472}
}
We investigate the constraints on models of supermassive black hole (SMBH) and quasar formation obtainable from two recent observational developments: the discovery of luminous quasars at z ∼ 6, and estimates of the local mass density of SMBHs. If ∼90 per cent of this mass was accreted at redshifts z ≤ 3, as suggested by the observed quasar luminosity functions, these joint constraints pose a challenge for models, which must account for the observed luminous quasar population at z ∼ 6 within a… Expand

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References

SHOWING 1-10 OF 118 REFERENCES
Quasars and galaxy formation
Quasars are widely believed to be powered by accretion onto supermassive black holes and there is now considerable evidence for a link between mergers, the activity of quasars and the formation ofExpand
The Merger History of Supermassive Black Holes in Galaxies
The ubiquity of supermassive black holes (SMBHs) at the centers of nearby luminous galaxies can arise from the multiple mergers experienced by dark matter halos in hierarchical structure formationExpand
The Assembly and Merging History of Supermassive Black Holes in Hierarchical Models of Galaxy Formation
We assess models for the assembly of supermassive black holes (SMBHs) at the center of galaxies that trace their hierarchical buildup far up in the dark halo merger tree. Motivated by the recentExpand
What Is the Highest Plausible Redshift of Luminous Quasars
The recent discoveries of luminous quasars at high redshifts imply that black holes more massive than a few billion solar masses were already assembled when the universe was less than a billion yearsExpand
A Physical Model for the Luminosity Function of High-Redshift Quasars
We provide a simple theoretical model for the quasar luminosity function at high redshifts that naturally reproduces the statistical properties of the luminous Sloan Digital Sky Survey (SDSS) quasarExpand
Major mergers of haloes, the growth of massive black holes and the evolving luminosity function of quasars
We construct a physically motivated analytical model for the quasar luminosity function, based on the joint star formation and feeding of massive black holes suggested by the observed correlationExpand
A unified model for the evolution of galaxies and quasars
We incorporate a simple scheme for the growth of supermassive black holes into semi-analytic models that follow the formation and evolution of galaxies in a cold dark matter-dominated Universe. WeExpand
High-redshift galaxies, their active nuclei and central black holes
We demonstrate that the luminosity function of the recently detected population of actively star-forming galaxies at redshift z = 3 and the B-band luminosity function of quasi-stellar objects (QSOs)Expand
Self-regulated Growth of Supermassive Black Holes in Galaxies as the Origin of the Optical and X-Ray Luminosity Functions of Quasars
We postulate that supermassive black holes grow in the centers of galaxies until they unbind the galactic gas that feeds them. We show that the corresponding self-regulation condition yields aExpand
Observational constraints on growth of massive black holes
We study the observational constraints on the growth of massive black holes (BHs) in galactic nuclei. We use the velocity dispersions of early-type galaxies obtained by the Sloan Digital Sky SurveyExpand
...
1
2
3
4
5
...