Establishing the impact of luminous AGN with multi-wavelength observations and simulations
| Autor: | Harrison, C. M., Girdhar, A., Ward, S. R. |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Proc. IAU 19 (2023) 57-62 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1017/S1743921323002806 |
| Popis: | 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. Comment: Accepted for publication in IAU Symposium 378 Conference Proceedings "Black Hole Winds at all Scales" |
| Databáze: | arXiv |
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