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We build upon our previously developed multi-ion radiative transfer (RT) framework, PEACOCK, to investigate the kinematic and energetic structure of cool-to-warm galactic winds in a sample of 50 nearby star-forming galaxies. Using…

We present 2D hydrodynamical simulations for the evolution of early-type galaxies containing central massive black holes (MBHs), starting at age 2 Gyr. The code contains accurate and physically consistent radiative and mechanical AGN wind…

Astrophysics of Galaxies · Physics 2017-01-25 L. Ciotti , S. Pellegrini , A. Negri , J. P. Ostriker

We use hydrodynamical simulations to study the color transformations induced by star formation and active galactic nuclei (AGN) during major mergers of spiral galaxies. Our modeling accounts for radiative cooling, star formation, and…

Astrophysics · Physics 2009-11-10 Volker Springel , Tiziana Di Matteo , Lars Hernquist

We present numerical simulations of galaxy clusters with stochastic heating from active galactic nuclei (AGN) that are able to reproduce the observed entropy and temperature profiles of non-cool-core (NCC) clusters. Our study uses N-body…

Cosmology and Nongalactic Astrophysics · Physics 2012-10-30 C. J. Short , P. A. Thomas , O. E. Young

While in massive galaxies active galactic nuclei (AGN) feedback plays an important role, the role of AGN feedback is still under debate in dwarf galaxies. With well spatially resolved data obtained from the Multi-Unit Spectroscopic Explorer…

Astrophysics of Galaxies · Physics 2023-06-07 Zhiyuan Zheng , Yong Shi , Fuyan Bian , Xiaoling Yu , Junfeng Wang , Jianhang Chen , Xin Li , Qiusheng Gu

We ask how the inclusion of various physical heating processes due to the metal content of gas affect the evolution of massive galaxies and compute a suite of cosmological hydrodynamical simulations that follow these systems and their…

The inefficiency of star formation in massive elliptical galaxies is widely believed to be caused by the interactions of an active galactic nucleus (AGN) with the surrounding gas. Achieving a sufficiently rapid reddening of moderately…

Metals in the hot gaseous halos of galaxies encode the history of star formation as well as the feedback processes that eject metals from the galaxies. X-ray observations suggest that massive galaxies have extended distributions of metals…

Astrophysics of Galaxies · Physics 2020-11-25 Ena Choi , Ryan Brennan , Rachel S. Somerville , Jeremiah P. Ostriker , Michaela Hirschmann , Thorsten Naab

In these proceedings I briefly: (1) review the impact (or "feedback") that active galactic nuclei (AGN) are predicted to have on their host galaxies and larger scale environment, (2) review the observational evidence for or against these…

Astrophysics of Galaxies · Physics 2015-06-18 C. M. Harrison

Coupling between active galactic nuclei (AGN) and the circumgalactic medium (CGM) is critical to the interplay between radiative cooling and feedback heating in the atmospheres of the universe's most massive galaxies. This paper presents a…

Astrophysics of Galaxies · Physics 2022-06-22 Deovrat Prasad , G. Mark Voit , Brian W. O'Shea

The actual mechanism(s) powering galactic outflows in active galactic nuclei (AGN) is still a matter of debate. At least two physical models have been considered in the literature: wind shocks and radiation pressure on dust. Here we provide…

Astrophysics of Galaxies · Physics 2021-02-10 W. Ishibashi , A. C. Fabian , N. Arakawa

We study the feedback between heating and cooling of the intra-cluster medium (ICM) in cooling flow (CF) galaxies and clusters. We adopt the popular view that the heating is due to an active galactic nucleus (AGN), i.e. a central black hole…

Astrophysics · Physics 2009-11-10 Fabio Pizzolato , Noam Soker

Observations of turbulent velocity dispersions in the HI component of galactic disks show a characteristic floor in galaxies with low star formation rates and within individual galaxies the dispersion profiles decline with radius. We carry…

Astrophysics · Physics 2009-11-13 Oscar Agertz , George Lake , Romain Teyssier , Ben Moore , Lucio Mayer , Alessandro B. Romeo

Winds and jets are symbiotic when the accretion rate is low, according to black hole accretion theory. Both components are potentially important for active galactic nucleus (AGN) feedback, but previous works typically include only jets with…

Astrophysics of Galaxies · Physics 2026-05-01 Minhang Guo , Suoqing Ji , Feng Yuan , Bocheng Zhu

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

Multi-scale simulations have made it possible to follow gas inflows onto massive black holes (BHs) from galactic scales to the accretion disk. When sufficient gas is driven towards the BH, gravitational instabilities generically form…

Cosmology and Nongalactic Astrophysics · Physics 2012-06-22 Philip F. Hopkins , Christopher C. Hayward , Desika Narayanan , Lars Hernquist

Feedback from stars and active galactic nuclei (AGNs) primarily affects the formation and evolution of galaxies and the circumgalactic medium, leaving some kind of imprint on larger scales. Based on the {\sc Simba} hydrodynamical simulation…

Cosmology and Nongalactic Astrophysics · Physics 2024-09-25 Carlo Schimd , Katarina Kraljic , Romeel Davé , Christophe Pichon

The centers of elliptical galaxies host supermassive black holes that significantly affect the surrounding interstellar medium through feedback resulting from the accretion process. The evolution of this gas and of the nuclear emission…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 S. Pellegrini , L. Ciotti , J. P. Ostriker

Growing observational evidence confirms the existence of massive black holes ($M_{BH} \sim 10^9 M_{\odot}$), accreting at rates close to the Eddington limit, at very high redshifts ($z \gtrsim 6-7$) in the early Universe. Recent…

Astrophysics of Galaxies · Physics 2019-10-02 W. Ishibashi

Precipitation of cold gas due to thermal instability in both galaxy clusters and the circumgalactic medium may regulate AGN feedback. We investigate thermal instability in idealized simulations of the circumgalactic medium with a parameter…

Astrophysics of Galaxies · Physics 2024-10-08 Benjamin D. Wibking , G. Mark Voit , Brian W. O'Shea