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Using several variants of the cosmological Simba simulations, we investigate the impact of different feedback prescriptions on the cosmic star formation history. Adopting a global-to-local approach, we link signatures seen in global…

Astrophysics of Galaxies · Physics 2024-04-12 Lucie Scharré , Daniele Sorini , Romeel Davé

Observations indicate that massive galaxies at z~2 are more compact than galaxies of comparable mass at z~0, with effective radii evolving by a factor of ~3-5. This implies that galaxies grow significantly in size but relatively little in…

Astrophysics of Galaxies · Physics 2015-06-15 W. Ishibashi , A. C. Fabian , R. E. A. Canning

Cosmological hydrodynamical simulations of galaxy formation in representative regions of the Universe typically need to resort to subresolution models to follow some of the feedback processes crucial for galaxy formation. Here, we show that…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Ewald Puchwein , Volker Springel

Pressure-regulated star formation is a simple variant on the usual supernova-regulated star formation efficiency that controls the global star formation rate as a function of cold gas content in star-forming galaxies, and accounts for the…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Joseph Silk

The interplay between radiative cooling of the circumgalactic medium (CGM) and feedback heating governs the evolution of the universe's most massive galaxies. This paper presents simulations of feedback processes in massive galaxies showing…

Radio mode feedback, in which most of the energy of an active galactic nucleus (AGN) is released in a kinetic form via radio-emitting jets, is thought to play an important role in the maintenance of massive galaxies in the present-day…

Astrophysics of Galaxies · Physics 2015-06-22 W. Ishibashi , M. W. Auger , D. Zhang , A. C. Fabian

We use 500 pc resolution cosmological simulations of a Virgo-like galaxy cluster to study the properties of the brightest cluster galaxy (BCG) that forms at the center of the halo. We compared two simulations; one incorporating only…

Cosmology and Nongalactic Astrophysics · Physics 2012-04-13 Davide Martizzi , Romain Teyssier , Ben Moore

Feedback from active galactic nuclei (AGN) has become a major component in simulations of galaxy evolution, in particular for massive galaxies. AGN jets have been shown to provide a large amount of energy and are capable of quenching…

Cosmology and Nongalactic Astrophysics · Physics 2012-09-13 Volker Gaibler , Sadegh Khochfar , Martin Krause , Joseph Silk

Observations show a prevalence of high redshift galaxies with large stellar masses and predominantly passive stellar populations. A variety of processes have been suggested that could reduce the star formation in such galaxies to observed…

Astrophysics of Galaxies · Physics 2015-06-19 Robert Feldmann , Lucio Mayer

Observationally, constraining the baryonic cycle within massive galaxies has proven to be quite difficult. In particular, the role of black hole feedback in regulating star formation, a key process in our theoretical understanding of galaxy…

Astrophysics of Galaxies · Physics 2020-01-08 Ignacio Martin-Navarro , Joseph N. Burchett , Mar Mezcua

Feedback heating from AGN in massive galaxies and galaxy clusters can be thought of as a naturally occurring control system which plays a significant role in regulating both star formation rates and the X-ray luminosity of the surrounding…

Cosmology and Nongalactic Astrophysics · Physics 2011-03-04 Edward C. D. Pope

Modelling AGN feedback in numerical simulations is both technically and theoretically challenging, with numerous approaches having been published in the literature. We present a study of five distinct approaches to modelling AGN feedback…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 James Wurster , Robert J. Thacker

We study the quenching of star formation as a function of redshift, environment and stellar mass in the galaxy formation simulations of Henriques et al. (2015), which implement an updated version of the Munich semi-analytic model…

Astrophysics of Galaxies · Physics 2017-06-21 Bruno M. B. Henriques , Simon D. M. White , Peter A. Thomas , Raul E. Angulo , Qi Guo , Gerard Lemson , Wenting Wang

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

The role of active galactic nuclei (AGN) feedback in dwarf galaxies remains poorly understood, with conventional wisdom suggesting it primarily suppresses star formation. Using high-resolution MACER3D simulations that directly resolve the…

Astrophysics of Galaxies · Physics 2025-10-27 Tingfang Su , Suoqing Ji , Feng Yuan , Haojie Xia , Yuxuan Zou

The passively evolving stellar population in elliptical galaxies (Es) provides a continuous source of fuel for accretion on the central supermassive black hole (SMBH), which is 1) extended over the entire galaxy life (but declining with…

Astrophysics of Galaxies · Physics 2015-05-14 L. Ciotti

We investigate black hole-host galaxy scaling relations in cosmological simulations with a self-consistent black hole growth and feedback model. The sub-grid accretion model captures the key scalings governing angular momentum transport…

[Abridged] The relatively recent insight that energy input from supermassive black holes (BHs) can have a substantial effect on the star formation rates (SFRs) of galaxies motivates us to examine its effects on the scale of galaxy groups.…

We investigate phenomenological models of star formation and supernova feedback in N-body/SPH simulations of galaxy formation. First, we compare different prescriptions in the literature for turning cold gas into stars neglecting feedback…

Astrophysics · Physics 2009-11-06 Scott T. Kay , Frazer R. Pearce , Carlos S. Frenk , Adrian Jenkins

Numerical simulations of active galactic nuclei (AGN) feedback in cool-core galaxy clusters have successfully avoided classical cooling flows, but often produce too much cold gas. We perform adaptive mesh simulations that include…

Astrophysics of Galaxies · Physics 2015-09-30 Yuan Li , Greg L. Bryan , Mateusz Ruszkowski , G. Mark Voit , Brian W. O'Shea , Megan Donahue
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