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Recent observations have identified an abundance of high-redshift active galactic nuclei (AGN) with supermassive black holes (BHs) that are over-massive compared to the local BH mass$-$total stellar mass ($M_{\mathrm{BH}}-M_\star$)…

Astrophysics of Galaxies · Physics 2025-04-02 Jonathan H. Cohn , Emmanuel Durodola , Quinn O. Casey , Erini Lambrides , Ryan C. Hickox

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

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

It is well known that supermassive black holes (SMBHs) and their host galaxies co-evolve. A manifestation of this co-evolution is the correlation that has been found between the SMBH mass, M$_{BH}$, and the galaxy bulge or stellar mass,…

Astrophysics of Galaxies · Physics 2023-04-12 George Mountrichas

The tight correlations between the mass of supermassive black holes ($M_{\rm BH}$) and their host-galaxy properties have been of great interest to the astrophysical community, but a clear understanding of their origin and fundamental…

[Abriged] Supermassive black holes (SMBH) lurk in the nuclei of most massive galaxies, perhaps in all of them. The tight observed scaling relations between SMBH masses and structural properties of their host spheroids likely indicate that…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Andrea Merloni , Sebastian Heinz

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

We review the observed demographics and inferred evolution of supermassive black holes (BHs) found by dynamical modeling of spatially resolved kinematics. Most influential was the discovery of a tight correlation between BH mass and the…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 John Kormendy , Luis C. Ho

Coevolution between supermassive black holes (BHs) and their host galaxies is universally adopted in models for galaxy formation. In the absence of feedback from active galactic nuclei, simulated massive galaxies keep forming stars in the…

The observational link between Supermassive Black Holes (SMBH) and galaxies at low redshift seems to be very tight, and statistically the global evolution of star formation activity and BH accretion activity also seem to trace each other…

Astrophysics · Physics 2008-08-11 Rachel S. Somerville

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

Understanding the relationship between supermassive black holes (SMBHs) and their host galaxies at different redshifts is crucial for unraveling the processes of SMBH-galaxy co-evolution. We present the properties of nine type 1 Active…

Astrophysics of Galaxies · Physics 2025-07-03 Atsushi Hoshi , Toru Yamada

We completed a new survey for H I emission for a large, well-defined sample of 154 nearby (z < 0.1) galaxies with type 1 AGNs. We make use of the extensive database presented in a companion paper to perform a comprehensive appraisal of the…

Astrophysics · Physics 2009-11-13 Luis C. Ho , Jeremy Darling , Jenny E. Greene

Supermassive black holes (BHs) appear to be ubiquitous at the center of all galaxies which have been observed at high enough sensitivities and resolution with the Hubble Space Telescope. Their masses are found to be tightly linked with the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Francesco Shankar

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

We present the study on the relationship between SMBHs and their host galaxies using our variability-selected AGN sample ($i_\mathrm{AB} \leq 25.9,\ z \leq 4.5$) constructed from the HSC-SSP Ultra-deep survey in the COSMOS field. We…

Astrophysics of Galaxies · Physics 2024-06-26 Atsushi Hoshi , Toru Yamada , Mitsuru Kokubo , Yoshiki Matsuoka , Tohru Nagao

Scaling relations between central black hole (BH) mass and host galaxy properties are of fundamental importance to studies of BH and galaxy evolution throughout cosmic time. Here we investigate the relationship between BH mass and host…

Astrophysics of Galaxies · Physics 2015-11-04 Amy E. Reines , Marta Volonteri

The scaling relations between supermassive black holes and their host galaxy properties are of fundamental importance in the context black hole-host galaxy co-evolution throughout cosmic time. In this work, we use a novel algorithm that…

Astrophysics of Galaxies · Physics 2019-06-26 Dalya Baron , Brice Ménard

We investigate the connection between supermassive black holes (SMBHs), their host galaxies, and large-scale dark-matter halos using broad-line X-ray AGN from the XMM--XXL and Stripe\,82X surveys, together with galaxies from VIPERS and…

Astrophysics of Galaxies · Physics 2026-04-24 G. Mountrichas , F. Shankar , F. J. Carrera , A. Georgakakis
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