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    Gravitational torque-driven black hole growth and feedback in cosmological simulations

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    Author
    Anglés-Alcázar, Daniel
    Davé, Romeel cc
    Faucher-Giguère, Claude-André
    Özel, Feryal
    Hopkins, Philip F.
    Affiliation
    Univ Arizona, Dept Astron
    Issue Date
    2017-01-21
    Keywords
    galaxies: active
    galaxies: evolution
    galaxies: formation
    intergalactic medium
    quasars: supermassive black holes
    cosmology: theory
    
    Metadata
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    Publisher
    OXFORD UNIV PRESS
    Citation
    Gravitational torque-driven black hole growth and feedback in cosmological simulations 2017, 464 (3):2840 Monthly Notices of the Royal Astronomical Society
    Journal
    Monthly Notices of the Royal Astronomical Society
    Rights
    © 2016 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    We investigate black hole-host galaxy scaling relations in cosmological simulations with a self-consistent black hole growth and feedback model. Our sub-grid accretion model captures the key scalings governing angular momentum transport by gravitational torques from galactic scales down to parsec scales, while our kinetic feedback implementation enables the injection of outflows with properties chosen to match observed nuclear outflows (star formation-driven winds are not included to isolate the effects of black hole feedback). We show that 'quasar mode' feedback can have a large impact on the thermal properties of the intergalactic medium and the growth of galaxies and massive black holes for kinetic feedback efficiencies as low as 0.1 per cent relative to the bolometric luminosity. None the less, our simulations indicate that the black hole-host scaling relations are only weakly dependent on the effects of black hole feedback on galactic scales, since black hole feedback suppresses the growth of galaxies and massive black holes by a similar amount. In contrast, the rate at which gravitational torques feed the central black hole relative to the host galaxy star formation rate governs the slope and normalization of the black hole-host correlations. Our results suggest that a common gas supply regulated by gravitational torques is the primary driver of the observed co-evolution of black holes and galaxies.
    ISSN
    0035-8711
    1365-2966
    DOI
    10.1093/mnras/stw2565
    Version
    Final published version
    Sponsors
    CIERA Postdoctoral Fellowship; South African Research Chairs Initiative; South African National Research Foundation; NASA ATP grant [NNX12AH86G, NNX14AH35G]; NSF [AST-1412836, AST-1517491, AST-1108753, 1411920, 1455342, ACI-1053575, PHY-1066293]; NASA [NNX15AB22G]; STScI [HST-AR-14293.001-A, HST-GO-14268.022-A]; NASA TCAN award [NNX14AB48G]; Alfred P. Sloan Research Fellowship
    Additional Links
    https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stw2565
    ae974a485f413a2113503eed53cd6c53
    10.1093/mnras/stw2565
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