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Related papers: Adiabatic black hole growth in S\'ersic models of …

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In this paper we report results of collisional N-body simulations of the dynamical evolution of equal-mass star clusters containing a massive central black hole. Each cluster is composed of between 5,000 to 180,000 stars together with a…

Astrophysics · Physics 2009-11-10 Holger Baumgardt , Junichiro Makino , Toshikazu Ebisuzaki

[Abridged] To investigate the evolution in the relation between galaxy stellar and central black hole mass we construct a volume limited complete sample of 85 AGN with host galaxy stellar masses M_{*} > 10^{10.5} M_{sol}, and specific X-ray…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Asa F. L. Bluck , Christopher J. Conselice , Omar Almaini , Elise S. Laird , Kirpal Nandra , Ruth Gruetzbauch

We argue that supermassive black hole growth in AGN occurs via sequences of randomly--oriented accretion discs with angular momentum limited by self--gravity. These stably co-- or counter--align with the black hole spin with almost equal…

Astrophysics · Physics 2009-11-13 A. R. King , J. E. Pringle , J. A. Hofmann

We show that black holes grow substantially by accretion at close to Eddington rates. Using a complete sample of soft X-ray selected AGNs, Grupe & Mathur (2004) have shown that narrow line Seyfert 1 galaxies, as a class, lie below the…

Astrophysics · Physics 2009-11-10 Smita Mathur , Dirk Grupe

We review the current state of dynamical modeling for galaxies in terms of being able to measure both the central black hole mass and stellar orbital structure. Both of these must be known adequately to measure either property. The current…

Astrophysics · Physics 2007-05-23 Karl Gebhardt

We discuss a simple model for the growth of supermassive black holes (BHs) at the center of spheroidal stellar systems. In particular, we assess the hypotheses that (1) star formation in spheroids and BH fueling are proportional to one…

Astrophysics · Physics 2009-11-07 Zoltan Haiman , Luca Ciotti , Jeremiah P. Ostriker

With the recent discoveries of massive and highly luminous quasars at high redshifts ($z\sim7$; e.g. Mortlock et al. 2011), the question of how black holes (BHs) grow in the early Universe has been cast in a new light. In order to grow BHs…

High Energy Astrophysical Phenomena · Physics 2019-03-19 M. Brightman , M. Bachetti , H. P. Earnshaw , F. Fürst , J. García , B. Grefenstette , M. Heida , E. Kara , K. K. Madsen , M. J. Middleton , D. Stern , F. Tombesi , D. J. Walton

We compare all the available observational data on the redshift evolution of the total stellar mass and star formation rate density in the Universe with the mass and accretion rate density evolution of supermassive black holes, estimated…

Astrophysics · Physics 2015-06-24 A. Merloni , G. Rudnick , T. Di Matteo

We consider the problem of growing the largest supermassive black holes from stellar--mass seeds at high redshift. Rapid growth without violating the Eddington limit requires that most mass is gained while the hole has a low spin and thus a…

Astrophysics · Physics 2010-11-11 A R King , J E Pringle

(Abridged) We present a simple framework for the growth and evolution of supermassive black holes (SMBHs) in the hierarchical structure formation paradigm. In our model, black hole accretion is triggered during major mergers (mass…

Cosmology and Nongalactic Astrophysics · Physics 2009-09-24 Yue Shen

We present 0.55 x 10^6 particle simulations of the accretion of high-density dwarf galaxies by low-density giant galaxies, using models that contain both power-law central density cusps and point masses representing supermassive black…

Astrophysics · Physics 2009-11-06 David Merritt , Fidel Cruz

We study the growth rates of massive black holes in the centres of galaxies from accretion of dark matter from their surrounding haloes. By considering only the accretion due to dark matter particles on orbits unbound to the central black…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 X. Hernandez , William H. Lee

The dynamical evolution of galaxies in clusters is modified if dark matter is self-interacting. Heat conduction from the hot cluster halo leads to evaporation of the relatively cooler galactic halos. The stellar distribution would…

Astrophysics · Physics 2009-10-31 Oleg Y. Gnedin , Jeremiah P. Ostriker

Supermassive black holes are thought to be relics of quasars, and their numbers and masses are therefore related to the quasar luminosity function and its evolution with redshift. We have used the relationship between black hole mass and…

Astrophysics · Physics 2009-11-07 M. C. Aller , D. O. Richstone

We study the relation between obscuration and supermassive black hole (SMBH) growth using a large sample of hard X-ray selected Active Galactic Nuclei (AGN). We find a strong decrease in the fraction of obscured sources above the Eddington…

Supermassive black holes at the centre of galactic nuclei mostly grow in mass through gas accretion over cosmic time. This process also modifies the angular momentum (or spin) of black holes, both in magnitude and in orientation. Despite…

Astrophysics of Galaxies · Physics 2018-04-25 Davide Fiacconi , Debora Sijacki , J. E. Pringle

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 a correlation between black-hole mass (Mbh) and…

Astrophysics · Physics 2008-11-26 Stuart Wyithe , Abraham Loeb

Due to the non-axisymmetric potential of the central bar, barred spiral galaxies form, in addition to their characteristic arms and bar, a variety of structures within the thin gas disk, like nuclear rings, inner spirals and dust-lanes.…

Astrophysics of Galaxies · Physics 2018-06-27 Manuel Jung , Tobias F. Illenseer , Wolfgang J. Duschl

The observational evidence that Super-Massive Black Holes ($M_{\bullet} \sim 10^{9-10} \, \mathrm{M_{\odot}}$) are already in place less than $1 \, \mathrm{Gyr}$ after the Big Bang poses stringent time constraints on the growth efficiency…

Astrophysics of Galaxies · Physics 2015-07-22 Fabio Pacucci , Marta Volonteri , Andrea Ferrara

We use collisionless $N$-body simulations to determine how the growth of a supermassive black hole (SMBH) influences the nuclear kinematics in both barred and unbarred galaxies. In the presence of a bar, the increase in the velocity…

Astrophysics of Galaxies · Physics 2013-11-14 Jonathan S. Brown , Monica Valluri , Juntai Shen , Victor P. Debattista