Y.M. Rosas-Guevara
The impact of angular momentum on black hole accretion rates in simulations of galaxy formation
Rosas-Guevara, Y.M.; Bower, R.G.; Schaye, J.; Furlong, M.; Frenk, C.S.; Booth, C.M.; Crain, R.A.; Dalla Vecchia, C.; Schaller, M.; Theuns, T.
Authors
R.G. Bower
J. Schaye
M. Furlong
Professor Carlos Frenk c.s.frenk@durham.ac.uk
Professor
C.M. Booth
R.A. Crain
C. Dalla Vecchia
M. Schaller
Professor Tom Theuns tom.theuns@durham.ac.uk
Professor
Abstract
Feedback from energy liberated by gas accretion on to black holes (BHs) is an attractive mechanism to explain the exponential cut-off at the massive end of the galaxy stellar mass function. Most previous implementations of BH accretion in hydrodynamical simulations of galaxy formation have assumed that BHs grow at an accretion rate that is proportion to the Bondi rate. A major concern is that the Bondi accretion rate is inappropriate when the accreting material has significant angular momentum. We present an improved accretion model that takes into account the circularization and subsequent viscous transport of infalling material, and implemented as a ‘subgrid’ model in hydrodynamic simulations. The resulting accretion rates are generally low in low mass (≲ 1011.5 M⊙) haloes, but show outbursts of Eddington-limited accretion during galaxy mergers. During outbursts these objects strongly resemble quasars. In higher mass haloes, gas accretion peaks at ∼10 per cent of the Eddington rate, which is thought to be conducive to the formation of radio jets. The resulting accretion rate depends strongly on the effective pressure of the gas surrounding the BH, which in turn depends strongly on halo mass. This induces a sharp transition in the importance of BH feedback. In small haloes, the growth of galaxies is regulated by star formation and supernova feedback, but above a halo mass of 1011.5 M⊙, rapid BH growth leads to the suppression of star formation and reduced growth of stellar mass with increasing halo mass.
Citation
Rosas-Guevara, Y., Bower, R., Schaye, J., Furlong, M., Frenk, C., Booth, C., …Theuns, T. (2015). The impact of angular momentum on black hole accretion rates in simulations of galaxy formation. Monthly Notices of the Royal Astronomical Society, 454(1), 1038-1057. https://doi.org/10.1093/mnras/stv2056
Journal Article Type | Article |
---|---|
Acceptance Date | Sep 2, 2015 |
Online Publication Date | Sep 30, 2015 |
Publication Date | Nov 21, 2015 |
Deposit Date | Feb 10, 2016 |
Publicly Available Date | Mar 28, 2024 |
Journal | Monthly Notices of the Royal Astronomical Society |
Print ISSN | 0035-8711 |
Electronic ISSN | 1365-2966 |
Publisher | Royal Astronomical Society |
Peer Reviewed | Peer Reviewed |
Volume | 454 |
Issue | 1 |
Pages | 1038-1057 |
DOI | https://doi.org/10.1093/mnras/stv2056 |
Keywords | Black hole physics, Methods: numerical, Galaxies: active, Galaxies: evolution, Galaxies: formation, Quasars: general. |
Files
Published Journal Article
(4.8 Mb)
PDF
Copyright Statement
This article has been accepted for publication in Monthly notices of the Royal Astronomical Society ©: 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
You might also like
Ghostly Galaxies: Accretion-dominated Stellar Systems in Low-mass Dark Matter Halos
(2023)
Journal Article
The FLAMINGO project: revisiting the S8 tension and the role of baryonic physics
(2023)
Journal Article
Where shadows lie: reconstruction of anisotropies in the neutrino sky
(2023)
Journal Article
Unraveling the Complexity of Dwarf Galaxy Dynamics: A Study of Binary Orbital Motions
(2023)
Journal Article
Downloadable Citations
About Durham Research Online (DRO)
Administrator e-mail: dro.admin@durham.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search