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Supermassive black holes (SMBHs) have been found to be ubiquitous in the nuclei of early-type galaxies and of bulges of spirals. There are evidences of a tight correlation between the SMBH masses, the velocity dispersions of stars in the…

Astrophysics of Galaxies · Physics 2018-02-23 Gianfranco De Zotti

In the last decade, a combination of high sensitivity, high spatial resolution observations and of coordinated multi-wavelength surveys has revolutionized our view of extra-galactic black hole (BH) astrophysics. We now know that…

High Energy Astrophysical Phenomena · Physics 2016-06-22 A. Merloni

Our understanding of the cosmic evolution of supermassive black holes (SMBHs) has been revolutionized by the advent of large multiwavelength extragalactic surveys, which have enabled detailed statistical studies of the host galaxies and…

Astrophysics of Galaxies · Physics 2016-12-16 Ryan C. Hickox , Stephanie M. LaMassa , John D. Silverman , Alexander Kolodzig

The last decade has witnessed significant progress in our understanding of the growth of super-massive black holes (SMBHs). It is now clear that an Active Galactic Nucleus (AGN: the observed manifestation of a growing SMBH) is an "event"…

The cosmological evolution of supermassive black holes (SMBHs) seems to be intimately linked to their host galaxies. Active galactic nuclei (AGN) can be probed by deep X-ray surveys. We review results from large X-ray selected samples…

Astrophysics · Physics 2007-08-08 Andreas Mueller , Guenther Hasinger

Supermassive black holes (SMBHs) have been detected in the centers of most nearby massive galaxies. Galaxies today are the products of billions of years of galaxy mergers, but also billions of years of SMBH activity as active galactic…

Cosmology and Nongalactic Astrophysics · Physics 2012-03-05 Sandor Van Wassenhove , Marta Volonteri , Lucio Mayer , Massimo Dotti , Jillian Bellovary , Simone Callegari

A fundamental role is attributed to supermassive black holes (SMBH), and the feedback they generate, in the evolution of galaxies. But theoretical models trying to reproduce the relation between the SMBH mass and stellar velocity dispersion…

Astrophysics of Galaxies · Physics 2014-03-25 Thaisa Storchi-Bergmann

The large-scale environments of active galactic nuclei (AGN) reveal important information on the growth and evolution of supermassive black holes (SMBHs). Previous AGN clustering measurements using 2-point correlation functions have hinted…

Astrophysics of Galaxies · Physics 2025-09-03 A. Mhatre , M. C. Powell , S. Yuan , S. W. Allen , T. Caglar , M. Koss , I. del Moral-Castro , K. Oh , A. Peca , C. Ricci , F. Ricci , A. Rojas , M. Signorini

Among the emerging excess of massive, bright galaxies at Cosmic Dawn $z \gtrsim 9$ seen by the James Webb Space Telescope, several exhibit spectral features associated with active galactic nuclei (AGN). These AGN candidates suggest that…

Astrophysics of Galaxies · Physics 2025-10-23 James Sunseri , Zachary L. Andalman , Romain Teyssier

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

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

I will describe the constraints available from a study of AGN evolution synthesis models on the growth of the supermassive black holes (SMBH) population in the two main 'modes' observed (kinetic- and radiatively-dominated, respectively). I…

Cosmology and Nongalactic Astrophysics · Physics 2009-12-11 Andrea Merloni

It is still a matter of intense debate how supermassive black holes (SMBH) grow, and the role played by feedback from active galactic nuclei (AGN) in the co-evolution of SMBHs and galaxies. To test the coevolution proposed by theoretical…

Astrophysics of Galaxies · Physics 2022-11-30 George Mountrichas , Francesco Shankar

The presence of dual active galactic nuclei (AGN) on scales of a few tens of kpc can be used to study merger-induced accretion on supermassive black holes (SMBHs) and offer insights about SMBH mergers, using dual AGNs as merger precursors.…

Astrophysics of Galaxies · Physics 2024-09-25 Vida Saeedzadeh , Arif Babul , Suvodip Mukherjee , Michael Tremmel , Thomas R. Quinn , Lucio Mayer

We investigate the local supermassive black hole (SMBH) density function and relative mass accretion rates of all active galactic nuclei (AGNs) identified in a volume-limited sample of infrared (IR) bright galaxies (L_IR > 3 x 10^9 L_sun)…

Astrophysics of Galaxies · Physics 2015-05-18 Andy D. Goulding , David M. Alexander , Bret D. Lehmer , James R. Mullaney

Supermassive black holes (SMBHs) are nowadays believed to reside in most local galaxies, and the available data show an empirical correlation between bulge luminosity - or stellar velocity dispersion - and black hole mass, suggesting a…

Astrophysics · Physics 2015-06-24 Marta Volonteri

The dynamic evolution of binary systems of supermassive black holes (SMBH) may be a key factor affecting a large fraction of the observed properties of active galactic nuclei (AGN) and galaxy evolution. Different classes of AGN can be…

Astrophysics · Physics 2007-05-23 A. P. Lobanov

It is well established that a dominant phase in the growth of massive galaxies occurred at high redshift and was heavily obscured by gas and dust. Many studies have explored the stellar growth of massive galaxies but few have combined these…

Cosmology and Nongalactic Astrophysics · Physics 2009-11-23 D. M. Alexander

Supermassive black holes (SMBHs) are thought to originate from early Universe seed black holes of mass $M_\mathrm{BH} \sim 10^2$-10$^5$ M$_{\odot}$ and grown through cosmic time. Such seeds could be powering the active galactic nuclei (AGN)…

Astrophysics of Galaxies · Physics 2024-09-02 M. Mezcua , M. Siudek , H. Suh , Valiante , D. Spinoso , S. Bonoli

Active galactic nuclei (AGN) in the early Universe are thought to be prominent sources of energy and ionizing photons that affected the growth of their host galaxy and their environment. However, it is still unclear how the supermassive…

Astrophysics of Galaxies · Physics 2023-06-28 Junehyoung Jeon , Boyuan Liu , Volker Bromm , Steven L. Finkelstein
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