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We present numerical models of the gas dynamics in the inner parsec of the Galactic centre. We follow the gas from its origin as stellar winds of several observed young massive stars, until it is either captured by the central black hole,…

高能天体物理现象 · 物理学 2015-06-24 Jorge Cuadra , Sergei Nayakshin , Q. Daniel Wang

In large scale cosmological hydrodynamic simulations simplified sub-grid models for gas accretion onto black holes and AGN feedback are commonly used. Such models typically depend on various free parameters, which are not well constrained.…

星系天体物理 · 物理学 2015-06-22 Lisa K. Steinborn , Klaus Dolag , Michaela Hirschmann , M. Almudena Prieto , Rhea-Silvia Remus

Feedback by Active Galactic Nuclei is often divided into quasar and radio mode, powered by radiation or radio jets, respectively. Both are fundamental in galaxy evolution, especially in late-type galaxies, as shown by cosmological…

星系天体物理 · 物理学 2018-03-28 S. Cielo , R. Bieri , M. Volonteri , A. Wagner , Y. Dubois

We investigate the effect of AGN feedback associated to the bright QSO phase onto the color distribution of galaxies from z=0 up to z=4. To this aim, we insert a blast-wave model of AGN feedback in our semi-analytic model of galaxy…

天体物理学 · 物理学 2011-02-11 N. Menci , A. Fontana , E. Giallongo , A. Grazian , S. Salimbeni

Depending on the value of the accretion rate, black hole accretion is divided into cold and hot modes. The two modes have distinctly different physics and correspond to two feedback modes. Most previous feedback works either focus only on…

高能天体物理现象 · 物理学 2020-01-08 Doosoo Yoon , Feng Yuan , Jeremiah P. Ostriker , Luca Ciotti , Bocheng Zhu

The systematic analysis of optical large-scale surveys has revealed a population of dwarf galaxies hosting AGN, which have been confirmed by X-ray follow-up observations. Recently, the MaNGA survey identified six dwarf galaxies that appear…

星系天体物理 · 物理学 2019-01-09 Sophie Koudmani , Debora Sijacki , Martin A. Bourne , Matthew C. Smith

(Context) Central active galactic nuclei (AGN) are supposed to play a key role in the evolution of their host galaxies. In particular, the dynamical and physical properties of the gas core must be affected by the injected energy. (Aims) Our…

天体物理学 · 物理学 2015-06-24 Sebastien Peirani , Scott Kay , Joe Silk

Negative feedback from active galactic nuclei (AGN) is the leading mechanism for the quenching of massive galaxies in the vast majority of modern galaxy evolution models. However, direct observational evidence that AGN feedback causes…

星系天体物理 · 物理学 2022-06-29 Samuel Ruthven Ward , Chris Harrison , Tiago Costa , Vincenzo Mainieri

AGN feedback is believed to play an important role in shaping a variety of observed galaxy properties, as well as the evolution of their stellar masses and star formation rates. In particular, in the current theoretical paradigm of galaxy…

宇宙学与河外天体物理 · 物理学 2015-05-19 Fabio Fontanot , Anna Pasquali , Gabriella De Lucia , Frank C. van den Bosch , Rachel S. Somerville , Xi Kang

Radiative cooling may plausibly cause hot gas in the centre of a massive galaxy, or galaxy cluster, to become gravitationally unstable. The subsequent collapse of this gas on a dynamical timescale can provide an abundant source of fuel for…

宇宙学与河外天体物理 · 物理学 2015-05-30 Edward C. D. Pope , J. Trevor Mendel , Stanislav S. Shabala

Active Galactic Nuclei (AGN) in cosmological simulations generate explosive feedback that regulates star formation in massive galaxies, modifying the gas phase structure out to large distances. Here, we explore the direct effects that AGN…

星系天体物理 · 物理学 2023-11-06 Aura Obreja , Fabrizio Arrigoni Battaia , Andrea V. Macciò , Tobias Buck

Near-infrared long-slit spectroscopy has been used to study the stellar population (SP) of the low luminosity active galactic nuclei (AGN) and matched analogues (LLAMA) sample. To perform the SP fits we have employed the X-shooter simple…

We investigated the influence of Active Galactic Nuclei (AGN) feedback on star formation in red spiral galaxies by analyzing a sample of 324 red and 273 blue face-on spirals selected from 115 low-redshift galaxy clusters. This…

We summarize what large surveys of the contemporary universe have taught us about the physics and phenomenology of the processes that link the formation and evolution of galaxies and their central supermassive black holes. We present a…

星系天体物理 · 物理学 2015-06-19 Timothy Heckman , Philip Best

The growth of supermassive black holes, especially the associated state of active galactic nuclei (AGNs), is generally believed to be the key step in regulating star formation in massive galaxies. As the fuel of star formation, the cold gas…

星系天体物理 · 物理学 2022-06-30 Hong Guo , Michael G. Jones , Jing Wang

Galaxy evolution is affected by competing feedback processes. Stellar feedback dominates in low-mass galaxies, while AGN feedback predominantly affects massive ones. Recent observational results reveal the dependence of black hole accretion…

星系天体物理 · 物理学 2018-07-11 Kastytis Zubovas

One of the challenges that models of AGN heating of the intracluster medium (ICM) face, is the question how the mechanical luminosity of the AGN is tuned to the radiative losses of the ICM. Here we implement a simple 1D model of a feedback…

天体物理学 · 物理学 2009-11-10 M. Hoeft , M. Brueggen

The molecular gas serves as a key probe of the complex interplay between black hole accretion and star formation in the host galaxies of active galactic nuclei (AGNs). We use CO(2-1) observations from a new ALMA survey, in conjunction with…

星系天体物理 · 物理学 2020-08-26 Jinyi Shangguan , Luis C. Ho , Franz E. Bauer , Ran Wang , Ezequiel Treister

Galactic outflows driven by stellar feedback are crucial for explaining the inefficiency of star formation in galaxies. Although strong feedback can promote the formation of galactic discs by limiting star formation at early times and…

星系天体物理 · 物理学 2020-08-13 Michael Kretschmer , Oscar Agertz , Romain Teyssier

AGN feedback is invoked as one of the most relevant mechanisms that shape the evolution of galaxies. Our goal is to understand the interplay between AGN feedback and the interstellar medium in M51, a nearby spiral galaxy with a modest AGN…