Skip to Main content Skip to Navigation
Journal articles

Black hole evolution - III. Statistical properties of mass growth and spin evolution using large-scale hydrodynamical cosmological simulations

Abstract : Supermassive black holes (BHs) at the centres of galaxies can rapidly change their mass and spin by gas accretion and mergers. Using hydrodynamical cosmological simulations, with prescriptions for BH growth and feedback from active galactic nuclei, we study how the evolution of BH mass growth is driven by gas accretion and mergers. Using a semi-analytical approach to evolve spins, we also highlight the mechanisms responsible for driving the magnitude and the direction of spins as a function of cosmic time. We find that in the high-redshift universe galaxies maintain large values of gas accretion on to BHs, which therefore is the main driver of their mass and spin evolution. Sustained accretion of cold gas at high redshift tends to align BH spins with the angular momentum of the surrounding gas and maximize their magnitude. Conversely, at low redshift, as BHs get more massive and galaxies more gas poor, the contribution from binary coalescences to the total BH mass growth increases, especially at the high-mass end, and tends to decrease the magnitude of spins and change their direction.
Complete list of metadata

https://hal-insu.archives-ouvertes.fr/insu-03645654
Contributor : Hal Sorbonne Université Gestionnaire Connect in order to contact the contributor
Submitted on : Monday, April 25, 2022 - 9:59:22 AM
Last modification on : Thursday, May 12, 2022 - 6:22:03 PM
Long-term archiving on: : Tuesday, July 26, 2022 - 6:32:49 PM

File

stu373.pdf
Publisher files allowed on an open archive

Identifiers

Citation

Yohan Dubois, Marta Volonteri, Joseph Silk. Black hole evolution - III. Statistical properties of mass growth and spin evolution using large-scale hydrodynamical cosmological simulations. Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P - Oxford Open Option A, 2014, 440, pp.1590-1606. ⟨10.1093/mnras/stu373⟩. ⟨insu-03645654⟩

Share

Metrics

Record views

15

Files downloads

6