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The James Webb Space Telescope (JWST) has observed compact, massive proto-stellar clusters of low metallicity in the Cosmic Gems arc galaxy at high redshift, which represent likely precursors to globular clusters. We model the mass growth…

Astrophysics of Galaxies · Physics 2025-10-22 Zacharias Roupas

We perform two-dimensional radiation hydrodynamical simulations of accretion flows onto black holes (BHs) at the nuclei of protogalaxies, and study the impact of mechanical and radiative feedback on rapid growth of BHs. The outflows deposit…

High Energy Astrophysical Phenomena · Physics 2020-07-15 Eishun Takeo , Kohei Inayoshi , Shin Mineshige

We study the orbital decay of a pair of massive black holes (BHs) with masses 5 * 10^5 and 10^7 M_sun, using hydrodynamical simulations of circumnuclear disks (CNDs) with the alternating presence of sub-grid physics such as radiative…

Astrophysics of Galaxies · Physics 2017-03-29 Rafael Souza Lima , Lucio Mayer , Pedro R. Capelo , Jillian M. Bellovary

Black hole feedback has been widely implemented as the key recipe to quench star formation in massive galaxies in modern semi-analytic models and hydrodynamical simulations. As the theoretical details surrounding the accretion and feedback…

Black holes (BHs) are believed to be a key ingredient of galaxy formation. However, the galaxy-BH interplay is challenging to study due to the large dynamical range and complex physics involved. As a consequence, hydrodynamical cosmological…

Astrophysics of Galaxies · Physics 2017-03-22 Andrea Negri , Marta Volonteri

There is compelling evidence that black holes (BHs) in cluster centers vigorously interact with their surroundings, indicating that any realistic model of cluster formation needs to account for these processes. Here we use high-resolution…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Ewald Puchwein , Debora Sijacki , Volker Springel

We show that the black hole-bulge mass scaling relations observed from the local to the high-z Universe can be largely or even entirely explained by a non-causal origin, i.e. they do not imply the need for any physically coupled growth of…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Knud Jahnke , Andrea Maccio

We compare the performance of the popular Bondi-Hoyle-Lyttleton (BHL) accretion scheme with a simple mass-flux scheme applied to stellar-mass black holes (BHs) across six levels of increasing spatial resolution. Simulating the formation of…

Astrophysics of Galaxies · Physics 2024-03-19 Simone T Gordon , Britton D Smith , Sadegh Khochfar , John Anthony Regan

The gas mass fraction of galaxy groups and clusters is a key physical quantity for constraining the impact of feedback processes on large-scale structure. While several modern cosmological simulations use the gas fraction-halo mass relation…

Cosmology and Nongalactic Astrophysics · Physics 2026-05-19 Emily E. Costello , Ian G. McCarthy , Jaime Salcido , John C. Helly , Robert J. McGibbon , Matthieu Schaller , Joop Schaye

The large galactic scales are connected to the many orders of magnitude smaller supermassive black hole (SMBH) scales by an episodic cycle of feeding and feedback. Active galactic nuclei (AGN) are powered by accretion onto SMBH and the…

Astrophysics of Galaxies · Physics 2022-08-29 Matas Tartėnas , Kastytis Zubovas

We study effects of AGN feedback outflows on multi-phase inter stellar medium (ISM) of the host galaxy. We argue that SMBH growth is dominated by accretion of dense cold clumps and filaments. AGN feedback outflows overtake the cold medium,…

Astrophysics of Galaxies · Physics 2015-06-17 Sergei Nayakshin

In this third paper of a series, we study the growth and luminosity of black holes (BHs) in motion with respect to their surrounding medium. We run a large set of two-dimensional (2D) axis-symmetric simulations to explore a large parameter…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 KwangHo Park , Massimo Ricotti

We use the EAGLE suite of hydrodynamical simulations to analyse accretion rates (and the breakdown of their constituent channels) onto haloes over cosmic time, comparing the behaviour of baryons and dark matter (DM). We also investigate the…

Astrophysics of Galaxies · Physics 2020-08-19 Ruby J. Wright , Claudia del P. Lagos , Chris Power , Peter D. Mitchell

Recent inspections of local available data suggest that the almost linear relation between the stellar mass of spheroids ($M_{\rm sph}$) and the mass of the super massive Black Holes (BHs) residing at their centres, shows a break below…

Astrophysics of Galaxies · Physics 2015-09-30 Fabio Fontanot , Pierluigi Monaco , Francesco Shankar

Growing Supermassive Black Holes (SMBH) are believed to influence their parent galaxies in a negative way, terminating their growth by ejecting gas out before it could turn into stars. Here we present some of the most sophisticated SMBH…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Sergei Nayakshin , Kastytis Zubovas

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

We derive X-ray mass, luminosity, and temperature profiles for 45 galaxy clusters to explore relationships between halo mass, AGN feedback, and central cooling time. We find that radio--mechanical feedback power (referred to here as "AGN…

Astrophysics of Galaxies · Physics 2017-12-14 Robert Main , Brian McNamara , Paul Nulsen , Helen Russell , Adrian Vantyghem

The tight correlations between the masses of supermassive black holes (BHs) and the properties of their host galaxies suggest that BHs coevolve with galaxies. However, what is the link between BH mass ($M_{\rm BH}$) and the properties of…

Astrophysics of Galaxies · Physics 2023-08-21 Ming-Yang Zhuang , Luis C. Ho

Recent results from combined cosmological probes indicate that the Dark Energy component of the Universe could be dynamical. The simplest explanation envisages the presence of a quintessence field rolling into a potential, where the Dark…

Cosmology and Nongalactic Astrophysics · Physics 2026-02-06 N. Menci , M. Castellano , P. Mukherjee , D. Roberts , P. Santini , A. A. Sen , F. Shankar

The vast amount of energy released by active galactic nuclei (AGN) is increasingly recognized as a key driver of evolution not only in massive galaxies and clusters, but also in low-mass dwarf galaxies. Despite this, their role in the early…

Astrophysics of Galaxies · Physics 2025-07-04 Mahsa Sanati , Julien Devriendt , SergioMartin-Alvarez , Adrianne Slyz , Jonathan C. Tan