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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Winds and feedback from supermassive black holes accreting at low rates: hydrodynamical treatment

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Almeida, Ivan [1] ; Nemmen, Rodrigo [1]
Total Authors: 2
[1] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Dept Astron, BR-05508090 Sao Paulo, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Monthly Notices of the Royal Astronomical Society; v. 492, n. 2, p. 2553-2571, FEB 2020.
Web of Science Citations: 0

Outflows produced by a supermassive black hole (SMBH) can have important feedback effects in its host galaxy. An unresolved question is the nature and properties of winds from SMBHs accreting at low rates in low-luminosity active galactic nuclei (LLAGNs). We performed two-dimensional numerical, hydrodynamical simulations of radiatively inefficient accretion flows on to non-spinning black holes. We explored a diversity of initial conditions in terms of rotation curves and viscous shear stress prescriptions, and evolved our models for very long durations of up to 8 x 10(5) GM/c(3). Our models resulted in powerful subrelativistic, thermally driven winds originated from the corona of the accretion flow at distances 10-100 GM/c(2) from the SMBH. The winds reached velocities of up to 0.01c with kinetic powers corresponding to 0.1-1 per cent of the rest-mass energy associated with inflowing gas at large distances, in good agreement with models of the `radio mode' of AGN feedback. The properties of our simulated outflows are in broad agreement with observations of winds in quiescent galaxies that host LLAGNs, which are capable of heating ambient gas and suppressing star formation. (AU)

FAPESP's process: 17/01461-2 - The extreme universe: black holes and the Fermi telescope
Grantee:Rodrigo Nemmen da Silva
Support type: Research Grants - Young Investigators Grants
FAPESP's process: 19/10054-7 - Black hole winds and feedback
Grantee:Ivan Carlos de Almeida
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 09/54006-4 - A computer cluster for the Astronomy Department of the University of São Paulo Institute of Astronomy, Geophysics and Atmospheric Sciences and for the Cruzeiro do Sul University Astrophysics Center
Grantee:Elisabete Maria de Gouveia Dal Pino
Support type: Multi-user Equipment Program