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The properties of large-scale galactic outflows, such as their kinetic energy and momentum rates, correlate with the luminosity of the active galactic nucleus (AGN). This is well explained by the wind-driven outflow model, where a fraction…

Astrophysics of Galaxies · Physics 2020-09-30 Kastytis Zubovas , Emanuele Nardini

Galaxy-wide outflows driven by active galactic nuclei (AGN) are an important ingredient in galaxy evolution. Analytical calculations suggest that such outflows have significant inertia and can persist long after the AGN itself fades away.…

Astrophysics of Galaxies · Physics 2023-06-14 Kastytis Zubovas , Gediminas Maskeliūnas

Galactic outflows are now commonly observed in starburst and active galactic nuclei (AGN) host galaxies. Yet, there is no clear consensus on their physical driving mechanism(s). We have previously shown that AGN radiative feedback, driven…

Astrophysics of Galaxies · Physics 2018-10-17 W. Ishibashi , A. C. Fabian

Large-scale, broad outflows are common in active galaxies. In systems where star formation coexists with an AGN, it is unclear yet the role that both play on driving the outflows. In this work we present three-dimensional radiative-cooling…

High Energy Astrophysical Phenomena · Physics 2018-09-21 E. de Gouveia Dal Pino , W. Clavijo-Bohórquez , C. Melioli

During the course of this conference, much evidence was presented that points to an intimate connection between the energetic outflows driven by AGN and the energy budget and quite possibly also the evolution of their gaseous environments.…

Astrophysics · Physics 2015-06-24 Christian R. Kaiser , Philip N. Best

During the last decade, wide-angle powerful outflows from AGN, both on parsec and kpc scales, have been detected in many galaxies. These outflows are widely suspected to be responsible for sweeping galaxies clear of their gas. We present…

Astrophysics of Galaxies · Physics 2012-01-18 Kastytis Zubovas , Andrew King

Observations and simulations show that outflows in active galactic nuclei (AGN) contain gas in different phases. To understand their true impact on galaxy evolution, we advocate consistent and unbiased investigation of these multiphase…

Astrophysics of Galaxies · Physics 2018-03-01 Claudia Cicone , Marcella Brusa , Cristina Ramos Almeida , Giovanni Cresci , Bernd Husemann , Vincenzo Mainieri

Large-scale outflows driven by active galactic nuclei (AGN) can have a profound influence on their host galaxies. The outflow properties themselves depend sensitively on the history of AGN energy injection during the lifetime of the…

Astrophysics of Galaxies · Physics 2022-07-20 Kastytis Zubovas , Jonas Bialopetravičius , Monika Kazlauskaitė

Large-scale outflows driven by AGNs are an important element of galaxy evolution. Detailed analysis of their properties allows us to probe the activity history of the galactic nucleus and, potentially, other properties of the host galaxy. A…

Astrophysics of Galaxies · Physics 2025-10-17 Kastytis Zubovas , Matas Tartėnas

Feedback from active galactic nuclei (AGN) on their host galaxies, in the form of gas outflows capable of quenching star formation, is considered a major player in galaxy evolution. However, clear observational evidence of such major impact…

Astrophysics of Galaxies · Physics 2021-04-07 Giacomo Venturi , Alessandro Marconi

Large scale, weakly collimated outflows are very common in galaxies with large infrared luminosities. In complex systems in particular, where intense star formation (SF) coexists with an active galactic nucleus (AGN), it is not clear yet…

Astrophysics of Galaxies · Physics 2015-10-21 Claudio Melioli , Elisabete M. de Gouveia Dal Pino

Galactic-wide outflows driven by active galactic nuclei (AGNs) is a routinely invoked feedback mechanism in galaxy evolution models. Hitherto, the interplay among the interstellar gas on galactic scales, the propagation of AGN outflows and…

Astrophysics of Galaxies · Physics 2024-11-04 Zhicheng He , Zhifu Chen , Guilin Liu , Tinggui Wang , Luis C. Ho , Junxian Wang , Weihao Bian , Zheng Cai , Guobin Mou , Qiusheng Gu , Zhiwen Wang

(abridged) Accretion onto supermassive black holes (SMBHs) at close to the Eddington rate can influence the host galaxy via powerful winds. Theoretical models of such winds can explain observational correlations between SMBHs and their host…

Astrophysics of Galaxies · Physics 2024-09-30 K. Zubovas , M. Tartėnas , M. A. Bourne

Observations of massive outflows with detectable central AGN typically find them within radii $\lesssim 10$ kpc. We show that this apparent size restriction is a natural result of AGN driving if this process injects total energy only of…

Astrophysics of Galaxies · Physics 2016-09-21 Kastytis Zubovas , Andrew King

Galaxy-scale outflows powered by actively accreting supermassive black holes are routinely detected, and they have been associated both with suppression and triggering of star formation. Recent observational evidence and simulations are…

Astrophysics of Galaxies · Physics 2018-03-01 Giovanni Cresci , Roberto Maiolino

Winds launched at the scale of the accretion disc or dusty torus in Active Galactic Nuclei (AGN) are thought to drive energy-conserving outflows that shape galaxy evolution. The key signature of such outflows, the presence of a hot ($T…

Astrophysics of Galaxies · Physics 2026-02-06 Ivan Almeida , Tiago Costa , Chris M. Harrison , Samuel R. Ward

AGN outflows can remove large quantities of gas from their host galaxy spheroids, potentially shutting off star formation. On the other hand, they can compress this gas, potentially enhancing or triggering star formation, at least for short…

Astrophysics of Galaxies · Physics 2017-04-27 Kastytis Zubovas , Martin A. Bourne

We study outflows driven by Active Galactic Nuclei (AGNs) using high- resolution simulations of idealized z=2 isolated disk galaxies. Episodic accretion events lead to outflows with velocities >1000 km/s and mass outflow rates up to the…

Astrophysics of Galaxies · Physics 2015-06-18 Jared M. Gabor , Frédéric Bournaud

We study the properties of massive, galactic-scale outflows of molecular gas and investigate their impact on galaxy evolution. We present new IRAM PdBI CO(1-0) observations of local ULIRGs and QSO hosts: clear signature of massive and…

It is widely suspected that AGN activity ultimately sweeps galaxies clear of their gas. We work out the observable properties required to achieve this. Large-scale AGN-driven outflows should have kinetic luminosities $\sim \eta\le/2 \sim…

Astrophysics of Galaxies · Physics 2015-06-03 Kastytis Zubovas , Andrew R. King
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