Powerful quasar outflow in a massive disc galaxy at z ~ 5
Monthly Notices of the Royal Astronomical Society: Letters
Oxford University Press
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Curtis, M., & Sijacki, D. (2016). Powerful quasar outflow in a massive disc galaxy at z ~ 5. Monthly Notices of the Royal Astronomical Society: Letters, 457 (1), L34-L38. https://doi.org/10.1093/mnrasl/slv199
There is growing observational evidence of high-redshift quasars launching energetic, fast outflows, but the effects that these have on their host galaxies is poorly understood. We employ the moving-mesh code AREPO to study the feedback from a quasar that has grown to ~10 9 M⊙ by z ~ 5 and the impact that this has on its host galaxy. Our simulations use a super-Lagrangian refinement technique to increase the accuracy with which the interface of the quasar-driven wind and the surrounding gas is resolved.We find that the feedback injected in these simulations is less efficient at removing gas from the galaxy than in an identical simulation with no super-Lagrangian refinement. This leads to the growth of a massive, rotationally supported, star-forming disc, co-existing with a powerful quasar-driven outflow. The properties of our host galaxy, including the kinematical structure of the gaseous disc and of the outflow, are in good agreement with current observations. Upcoming ALMA and JWST observations will be an excellent test of our model and will provide further clues as to the variance in properties of high-redshift quasar hosts.
black hole physics, methods: numerical, cosmology: theory
MC is supported by the STFC and DS acknowledges support by the ERC Starting Grant 638707 ‘Black holes and their host galaxies: co-evolution across cosmic time’. This work was performed on: DiRAC Darwin Supercomputer (University of Cambridge HPCS; Higher Education Funding Council for England and STFC); DiRAC Complexity system (University of Leicester IT Services; BIS National E-Infrastructure grant ST/K000373/1 and STFC DiRAC grant ST/K0003259/1); the COSMA Data Centric system (Durham University; BIS National E-infrastructure grant ST/K00042X/1, STFC grant ST/K00087X/1, DiRAC Operations grant ST/K003267/1 and Durham University). DiRAC is part of the National E-Infrastructure.
ECH2020 EUROPEAN RESEARCH COUNCIL (ERC) (638707)
External DOI: https://doi.org/10.1093/mnrasl/slv199
This record's URL: https://www.repository.cam.ac.uk/handle/1810/267260