AGN feedback in numerical simulations
L. Ciotti (Dept. of Astronomy, Bologna University, Italy)
TL;DR
This paper presents numerical simulations of elliptical galaxies that incorporate physically based radiative and mechanical feedback mechanisms from central supermassive black holes, revealing their impact on galaxy evolution.
Contribution
It introduces a new simulation approach that models feedback effects in elliptical galaxies with a physically grounded implementation.
Findings
Feedback effects influence gas dynamics and black hole growth.
Simulations show a decline in fuel supply over cosmic time.
Mechanical feedback regulates SMBH accretion and galaxy evolution.
Abstract
The passively evolving stellar population in elliptical galaxies (Es) provides a continuous source of fuel for accretion on the central supermassive black hole (SMBH), which is 1) extended over the entire galaxy life (but declining with cosmic time), 2) linearly proportional to the stellar mass of the host spheroid, 3) summing up to a total gas mass that is >100 times larger than the currently observed SMBH masses, 4) available independently of merging events. The main results of numerical simulations of Es with central SMBH, in which a physically based implementation of radiative and mechanical feedback effects is considered, are presented.
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