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In the intracluster, intragroup, and circumgalactic medium (ICM, IGrM, CGM), turbulence plays a vital role in the self-regulated feedback and feeding cycle of central supermassive black holes (SMBHs). Here we continue our systematic…

Astrophysics of Galaxies · Physics 2023-03-29 Denis Wittor , Massimo Gaspari

Supermassive black hole accretion and feedback play central role in the evolution of galaxies, groups, and clusters. I review how AGN feedback is tightly coupled with the formation of multiphase gas and the newly probed chaotic cold…

Astrophysics of Galaxies · Physics 2016-08-24 M. Gaspari

AGN feedback is responsible for maintaining plasma in global thermal balance in extended halos of elliptical galaxies and galaxy clusters. Local thermal instability in the hot gas leads to the formation of precipitating cold gas clouds that…

Astrophysics of Galaxies · Physics 2021-04-14 C. Wang , M. Ruszkowski , C. Pfrommer , S. Peng Oh , H. -Y. K. Yang

The co-evolution between supermassive black holes and their environment is most directly traced by the hot atmospheres of dark matter halos. Cooling of the hot atmosphere supplies the central regions with fresh gas, igniting active galactic…

Astrophysics of Galaxies · Physics 2021-06-29 Dominique Eckert , Massimo Gaspari , Fabio Gastaldello , Amandine M. C. Le Brun , Ewan O'Sullivan

Cool cores of galaxy clusters are thought to be heated by low-power active galactic nuclei (AGN), whose accretion is regulated by feedback. However, the interaction between the hot gas ejected by the AGN and the ambient intracluster medium…

High Energy Astrophysical Phenomena · Physics 2009-06-01 M. Brueggen , E. Scannapieco

The feedback from active galactic nuclei (AGN) plays a crucial role in regulating the thermodynamics and the dynamics of the intracluster medium (ICM). Studying the turbulent patterns of the hot and warm ionized phases may allow us to…

Astrophysics of Galaxies · Physics 2025-05-14 Stefano Sotira , Franco Vazza , Fabrizio Brighenti

Hot, underdense bubbles powered by active galactic nuclei (AGN) are likely to play a key role in halting catastrophic cooling in the centers of cool-core galaxy clusters. We present three-dimensional simulations that capture the evolution…

Astrophysics · Physics 2009-11-13 Evan Scannapieco , Marcus Brüggen

Cool cores of galaxy clusters are thought to be heated by low-power active galactic nuclei (AGN), whose accretion is regulated by feedback. However, the interaction between the hot gas ejected by the AGN and the ambient intracluster medium…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Evan Scannapieco , Marcus Brüggen

Both simulations and observations have shown that turbulence is a pervasive phenomenon in cosmic scenarios, yet it is particularly difficult to model numerically due to its intrinsically multiscale character which demands high resolutions.…

Cosmology and Nongalactic Astrophysics · Physics 2021-04-27 David Vallés-Pérez , Susana Planelles , Vicent Quilis

We investigate how AGN disk turbulence affects the orbital dynamics of a stellar-mass black hole (BH) initially located at a migration trap, focusing on the long-term behavior of eccentricity and inclination in the quasi-embedded regime. We…

High Energy Astrophysical Phenomena · Physics 2025-11-05 Alessandro Alberto Trani , Pierfrancesco Di Cintio

Active galactic nuclei (AGN) are accreting supermassive black holes co-evolving with their host galaxies through a complex interplay of feeding and feedback. In this chapter, we first discuss AGN fuelling in galaxies, both in interacting…

Astrophysics of Galaxies · Physics 2023-08-02 Pedro R. Capelo , Chiara Feruglio , Ryan C. Hickox , Francesco Tombesi

A fundamental gap in the current understanding of galaxies concerns the thermodynamical evolution of the ordinary, baryonic matter. On one hand, radiative emission drastically decreases the thermal energy content of the interstellar plasma…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 M. Gaspari , F. Brighenti , P. Temi

Turbulence generated by large-scale motions during structure formation affects the evolution of the thermal and non-thermal components of the intracluster medium. As enstrophy is a measure of the magnitude of vorticity, we study the…

Cosmology and Nongalactic Astrophysics · Physics 2017-07-31 Denis Wittor , Tom Jones , Franco Vazza , Marcus Brüggen

Feedback from active galactic nuclei (AGN) is believed to play a significant role in suppressing cooling flows in cool-core (CC) clusters. Turbulence in the intracluster medium (ICM), which may be induced by AGN activity or pre-existing…

High Energy Astrophysical Phenomena · Physics 2025-12-01 Jia-Lun Li , H. -Y. Karen Yang

We investigate the role of AGN feedback in turbulent heating of galaxy clusters. Specifically, we analyze the production of turbulence by g-modes generated by the supersonic expansion and buoyant rise of AGN-driven bubbles. Previous work…

High Energy Astrophysical Phenomena · Physics 2018-05-02 Christopher J. Bambic , Brian J. Morsony , Christopher S. Reynolds

Growing supermassive black holes (Active Galactic Nuclei; AGN) release energy with the potential to alter their host galaxies and larger-scale environment; a process named "AGN feedback". Feedback is a required component of galaxy formation…

Astrophysics of Galaxies · Physics 2024-04-15 Chris M. Harrison , Cristina Ramos Almeida

Unopposed radiative cooling in clusters of galaxies results in excessive mass deposition rates. However, the cool cores of galaxy clusters are continuously heated by thermal conduction and turbulent heat diffusion due to minor mergers or…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 M. Ruszkowski , S. Peng Oh

We show, using global 3D grid-based hydrodynamical simulations, that Ultra Fast Outflows (UFOs) from Active Galactic Nuclei (AGN) result in considerable feedback of energy and momentum into the interstellar medium (ISM) of the host galaxy.…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 A. Y. Wagner , M. Umemura , G. V. Bicknell

To tackle the still unsolved and fundamental problem of the role of Active Galactic Nuclei (AGN) feedback in shaping galaxies, in this work we implement a new physical treatment of AGN-driven winds into our semi-analytic model of galaxy…

Astrophysics of Galaxies · Physics 2023-06-28 N. Menci , F. Fiore , F. Shankar , L. Zanisi , C. Feruglio

Radiation, winds and jets from the active nucleus of a massive galaxy can interact with its interstellar medium leading to ejection or heating of the gas. This can terminate star formation in the galaxy and stifle accretion onto the black…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 A. C. Fabian
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