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Supermassive black holes (SMBHs) with masses of $\sim 10^9 {\rm M_\odot}$ within the first billion year of the universe challenge our conventional understanding of black hole formation and growth. One pathway to these SMBHs proposes that…

Astrophysics of Galaxies · Physics 2024-06-11 Matthew T. Scoggins , Zoltán Haiman

Growing evidence indicate supermassive black holes (SMBHs) in the mass range of $M_{\rm BH}$$\sim 10^6-10^{10}M_{\odot}$ lurking in central bulges of many galaxies. Extensive observations reveal fairly tight power laws of $M_{\rm BH}$…

Astrophysics · Physics 2009-06-25 Yu-Qing Lou , Yan-Fei Jiang

Supermassive black holes (SMBHs) of 10^9-10^10 Msun were already in place ~13 Gyr ago, at z>6. Super-Eddington growth of low-mass BH seeds (~100 Msun) or less extreme accretion onto ~10^5 Msun seeds have been recently considered as the main…

Astrophysics of Galaxies · Physics 2020-11-04 Rosa Valiante , Raffaella Schneider , Luca Graziani , Luca Zappacosta

Super-massive black holes (SMBHs) with $M_{\bullet} \sim 10^9 $ M$_{\odot}$ at $z>6$ likely originate from massive seed black holes (BHs). We investigate the consequences of seeding SMBHs with direct collapse BHs (DCBHs)…

Astrophysics of Galaxies · Physics 2018-11-14 Daniel S. Eastwood , Sadegh Khochfar

The relationship between galaxies and supermassive black holes (SMBH) found in their cores plays a key role in the formation and evolution of both of these major constituents of the universe, as well as the evolution of the intergalactic…

Astrophysics · Physics 2016-11-15 S. G. Djorgovski , M. Volonteri , V. Springel , V. Bromm , G. Meylan

We explore the connection between the central supermassive blackholes (SMBH) in galaxies and the dark matter halo through the relation between the masses of the SMBHs and the maximum circular velocities of the host galaxies, as well as the…

Astrophysics of Galaxies · Physics 2015-06-23 Bassem M. Sabra , Charbel Saliba , Maya Abi Akl , Gilbert Chahine

The presence of supermassive black holes at redshift z > 6 raises some questions about their formation and growth in the early universe. Due to the construction of new telescopes like the ELT to observe and detect SMBHs, it will be useful…

Cosmology and Nongalactic Astrophysics · Physics 2023-05-31 M. Liempi , L. Almonacid , D. R. G. Schleicher , A. Escala

We study the correlations between Supermassive Black Holes (BH) and their host galaxies, using a sample of 83 BH masses collected from the most recent and reliable spatially resolved estimates available from the literature. We confirm the…

Astrophysics of Galaxies · Physics 2019-09-25 Stefano de Nicola , Alessandro Marconi , Giuseppe Longo

Massive black holes (MBHs), with masses in the range 10^3-10^8 Msolar, which merge with a companion black hole of similar mass are expected to be the most powerful source of gravitational radiation in the frequency range probed by LISA. MBH…

Astrophysics · Physics 2009-11-11 Marta Volonteri

We investigate the variation of black hole masses (Mbh) as a function of their host galaxy stellar mass (Mstar) and half-light radius (Re). We confirm that the scatter in Mbh within this plane is essentially the same as that in the Mbh -…

Astrophysics of Galaxies · Physics 2017-10-19 Davor Krajnović , Michele Cappellari , Richard M. McDermid

Understanding the formation and growth of supermassive black holes (SMBHs) at high redshift represents a major challenge for theoretical models. In this work we investigate the early evolution of the first SMBHs by constraining their…

Astrophysics of Galaxies · Physics 2022-01-19 Alessandro Trinca , Raffaella Schneider , Rosa Valiante , Luca Graziani , Luca Zappacosta , Francesco Shankar

Supermassive black holes (SMBHs) are common in local galactic nuclei, and SMBHs as massive as several billion solar masses already exist at redshift z=6. These earliest SMBHs may arise by the combination of Eddington-limited growth and…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Zoltán Haiman

We present a theoretical framework for seeding and growing supermassive black holes (SMBHs) in dark matter halos along their assembly histories. Seeds are bred out of Pop-III stars formed during the first collapse of pristine gas in…

Astrophysics of Galaxies · Physics 2026-04-28 Yangyao Chen , Houjun Mo , Huiyuan Wang

Intermediate-mass black holes (IMBHs; $M_{BH} <2*10^{5} M_{\odot}$) in galaxy centers are cruciel for painting a coherent picture of the formation and growth of supermassive black holes (SMBHs). Using Big Data analysis, we identified 305…

The masses of supermassive black holes (SMBHs, M_BH=10^6-10^11 Msun) in the centres of galaxies are related to the host stellar spheroid mass and velocity dispersion. A key question is how these relations originate, and over which range of…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 J. M. Diederik Kruijssen , Nora Lützgendorf

Observations with the James Webb Space Telescope (JWST) have identified an abundant population of supermassive black holes (SMBHs) already in place during the first few hundred million years of cosmic history. Most of them appear…

The discovery of a relationship between supermassive black hole (SMBH) mass and spiral arm pitch angle (P) is evidence that SMBHs are tied to the overall secular evolution of a galaxy. The discovery of SMBHs in late-type galaxies with…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Patrick Treuthardt , Marc S. Seigar , Amber D. Sierra , Ismaeel Al-Baidhany , Heikki Salo , Daniel Kennefick , Julia Kennefick , Claud H. S. Lacy

Massive black holes (BHs) inhabit local galaxies, including the Milky Way and some dwarf galaxies. BH formation, occurring at early cosmic times, must account for the properties of BHs in today's galaxies, notably why some galaxies host a…

Astrophysics of Galaxies · Physics 2017-07-28 Melanie Habouzit , Marta Volonteri , Yohan Dubois

Supermassive black hole (SMBH) binaries residing at the core of merging galaxies are recently found to be strongly affected by the rotation of their host galaxies. The highly eccentric orbits that form when the host is counterrotating emit…

Numerous observations have shown that almost all galaxies in our Universe host supermassive black holes (SMBHs), but there is still much debate about their formation and evolutionary processes. Recently, gravitational waves (GWs) have been…

Cosmology and Nongalactic Astrophysics · Physics 2025-09-26 Kazuya Furusawa , Hiroyuki Tashiro , Shuichiro Yokoyama , Kiyotomo Ichiki