Supermassive black holes in the EAGLE Universe. Revealing the observables of their growth
Author
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Rosas Guevara, Yetli
Author
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Bower, Richard G.
Author
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Schaye, Joop
Author
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McAlpine, Stuart
Author
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Dalla Vecchia, Claudio
Author
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Frenk, Carlos S.
Author
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Schaller, Matthieu
Author
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Theuns, Tom
Admission date
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2017-03-01T20:31:44Z
Available date
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2017-03-01T20:31:44Z
Publication date
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2016
Cita de ítem
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Monthly Notices of The Royal Astronomical Society. Volumen: 462 Número: 1 Páginas: 190-205
es_ES
Identifier
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10.1093/mnras/stw1679
Identifier
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https://repositorio.uchile.cl/handle/2250/142883
Abstract
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We investigate the evolution of supermassive black holes in the 'Evolution and Assembly of GaLaxies and their Environments' (EAGLE) cosmological hydrodynamic simulations. The largest of the EAGLE volumes covers a (100 cMpc) 3 and includes state-of-the-art physical models for star formation and black hole growth that depend only on local gas properties. We focus on the black hole mass function, Eddington ratio distribution and the implied duty cycle of nuclear activity. The simulation is broadly consistent with observational constraints on these quantities. In order to make a more direct comparison with observational data, we calculate the soft and hard X-ray luminosity functions of the active galactic nuclei (AGN). Between redshifts 0 and 1, the simulation is in agreement with data. At higher redshifts, the simulation tends to underpredict the luminosities of the brightest observed AGN. This may be due to the limited volume of the simulation, or a fundamental deficiency of the underlying model. It seems unlikely that additional unresolved variability can account for this difference. The simulation shows a similar 'downsizing' of the AGN population as seen in observational surveys.