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To be presented is a study of the secular evolution of a spherical stellar system with a central star-accreting black hole (BH) using the anisotropic gaseous model. This method solves numerically moment equations of the full Fokker-Planck…

天体物理学 · 物理学 2009-11-10 Pau Amaro-Seoane , Marc Freitag , Rainer Spurzem

The formation of the first massive objects in the infant Universe remains impossible to observe directly and yet it sets the stage for the subsequent evolution of galaxies. While some black holes with masses > billion solar masses? have…

高能天体物理现象 · 物理学 2015-05-28 Ezequiel Treister , Kevin Schawinski , Marta Volonteri , Priyamvada Natarajan , Eric Gawiser

We present high-quality fluid dynamical simulations of isothermal gas flows in a rotating barred potential. We show that a large quantity of gas is driven right into the nucleus of a model galaxy when the potential lacks a central mass…

星系天体物理 · 物理学 2017-11-29 Zhi Li , J A Sellwood , Juntai Shen

We use data from large surveys of the local Universe (SDSS+Galaxy Zoo) to show that the galaxy-black hole connection is linked to host morphology at a fundamental level. The fraction of early-type galaxies with actively growing black holes,…

This paper presents a study of quasi-steady spherical accretion in the early Universe, before the formation of the first stars and galaxies. The main motivation is to derive the basic formulas that will be used in a companion paper to…

天体物理学 · 物理学 2010-11-05 Massimo Ricotti

We investigate the alignment processes of spinning black holes and their surrounding warped accretion disks in a frame of two different types of feeding at the outer boundaries. We consider (1) fixed flows in which gas is continually fed…

高能天体物理现象 · 物理学 2013-01-30 Yan-Rong Li , Jian-Min Wang , Cheng Cheng , Jie Qiu

Whilst in galaxy-size simulations, supermassive black holes (SMBH) are entirely handled by sub-grid algorithms, computational power now allows the accretion radius of such objects to be resolved in smaller scale simulations. In this paper,…

高能天体物理现象 · 物理学 2018-05-29 Ricarda Sylvia Beckmann , Julien Devriendt , Adrianne Slyz

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…

星系天体物理 · 物理学 2015-07-22 Fabio Pacucci , Marta Volonteri , Andrea Ferrara

We review the observed demographics and inferred evolution of supermassive black holes (BHs) found by dynamical modeling of spatially resolved kinematics. Most influential was the discovery of a tight correlation between BH mass and the…

宇宙学与河外天体物理 · 物理学 2015-06-15 John Kormendy , Luis C. Ho

We summarize what large surveys of the contemporary universe have taught us about the physics and phenomenology of the processes that link the formation and evolution of galaxies and their central supermassive black holes. We present a…

星系天体物理 · 物理学 2015-06-19 Timothy Heckman , Philip Best

We study the interplay between galaxy evolution and central black-hole (BH) growth using the {NewHorizon} cosmological simulation. BH growth is slow when the dark-matter halo is below a golden mass of $M_{\rm v} \sim 10^{12} \rm M_\odot$,…

星系天体物理 · 物理学 2021-07-02 Sharon Lapiner , Avishai Dekel , Yohan Dubois

Observations of supermassive black holes at high redshift challenge our understanding of the evolution of the first generation of black holes (BHs) in proto-galactic environments. One possibility is that they grow much more rapidly than…

星系天体物理 · 物理学 2025-02-04 Simone T. Gordon , Britton D. Smith , Sadegh Khochfar , Ricarda S. Beckmann

Using a new large-scale (~ 0.75 Gpc)^3 hydrodynamic cosmological simulation we investigate the growth rate of supermassive black holes in the early universe (z > 4.75). Remarkably, we find a clear peak in the typical Eddington ratio at…

宇宙学与河外天体物理 · 物理学 2015-06-03 Colin DeGraf , Tiziana Di Matteo , Nishikanta Khandai , Rupert Croft

A supermassive black hole in the nucleus of an elliptical galaxy at the centre of a cool-core group or cluster of galaxies is immersed in hot gas. Bondi accretion should occur at a rate determined by the properties of the gas at the Bondi…

宇宙学与河外天体物理 · 物理学 2015-05-28 Ramesh Narayan , Andrew C. Fabian

We study the population of supermassive black holes (SMBHs) and their effects on massive central galaxies in the IllustrisTNG cosmological hydrodynamical simulations of galaxy formation. The employed model for SMBH growth and feedback…

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…

天体物理学 · 物理学 2010-11-11 A R King , J E Pringle

We present results on the evolution of the intrinsic scatter of black hole masses considering different implementations of a model in which black holes only grow via mergers. We demonstrate how merger driven growth affects the correlations…

星系天体物理 · 物理学 2015-05-18 M. Hirschmann , S. Khochfar , A. Burkert , T. Naab , S. Genel , R. Somerville

We introduce a new model for the formation and evolution of supermassive black holes (SMBHs) in the RAMSES code using sink particles, improving over previous work the treatment of gas accretion and dynamical evolution. This new model is…

星系天体物理 · 物理学 2017-04-11 Pawel Biernacki , Romain Teyssier , Andreas Bleuler

The growth of the most massive black holes in the early universe, consistent with the detection of highly luminous quasars at $z> 6$ implies sustained, critical accretion of material to grow and power them. Given a black hole seed scenario,…

星系天体物理 · 物理学 2017-03-29 Tiziana Di Matteo , Rupert A. C. Croft , Yu Feng , Dacen Waters , Stephen Wilkins

We discuss the role of feedback from AGNs on the formation of spheroidal galaxies. The energy released by an accreting Black Hole (BH) may be injected into the ISM through blast waves arising directly from the central engine, radiation…

天体物理学 · 物理学 2007-05-23 P. Monaco