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Establishing the impact of luminous AGN with multi-wavelength observations and simulations.

Authors :
Harrison, C. M.
Girdhar, A.
Ward, S. R.
Source :
Proceedings of the International Astronomical Union. Dec2023, Vol. 19 Issue S378, p57-62. 6p.
Publication Year :
2023

Abstract

Cosmological simulations fail to reproduce realistic galaxy populations without energy injection from active galactic nuclei (AGN) into the interstellar medium (ISM) and circumgalactic medium (CGM); a process called 'AGN feedback'. Consequently, observational work searches for evidence that luminous AGN impact their host galaxies. Here, we review some of this work. Multi-phase AGN outflows are common, some with potential for significant impact. Additionally, multiple feedback channels can be observed simultaneously; e.g., radio jets from 'radio quiet' quasars can inject turbulence on ISM scales, and displace CGM-scale molecular gas. However, caution must be taken comparing outflows to simulations (e.g., kinetic coupling efficiencies) to infer feedback potential, due to a lack of comparable predictions. Furthermore, some work claims limited evidence for feedback because AGN live in gas-rich, star-forming galaxies. However, simulations do not predict instantaneous, global impact on molecular gas or star formation. The impact is expected to be cumulative, over multiple episodes. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
17439213
Volume :
19
Issue :
S378
Database :
Academic Search Index
Journal :
Proceedings of the International Astronomical Union
Publication Type :
Academic Journal
Accession number :
180533953
Full Text :
https://doi.org/10.1017/S1743921323002806