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We study the evolution of gravitationally recoiled supermassive black holes (BHs) in massive gas-rich galaxies by means of high-resolution hydrodynamical simulations. We find that the presence of a massive gaseous disc allows recoiled BHs…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Debora Sijacki , Volker Springel , Martin Haehnelt

Intermediate-mass black holes (IMBHs) are believed to be the missing link between the supermassive black holes (BHs) found at the centers of massive galaxies and BHs formed through stellar core collapse. One of the proposed mechanisms for…

Astrophysics of Galaxies · Physics 2024-03-14 Rujuta A. Purohit , Giacomo Fragione , Frederic A. Rasio , Grayson C. Petter , Ryan C. Hickox

The evolution of Supermassive Black Holes (SMBHs) initially embedded in the centres of merging galaxies realised with a stellar mass function (SMF) is studied from the onset of galaxy mergers till coalescence. We performed a large set of…

Astrophysics of Galaxies · Physics 2018-07-18 Fazeel Mahmood Khan , Peter Berczik , Andreas Just

Gravitational waves (GWs) offer an unprecedented opportunity to survey the sky and detect mergers of compact objects. While intermediate-mass black holes (IMBHs) have not been detected beyond any reasonable doubt with either dynamical or…

High Energy Astrophysical Phenomena · Physics 2022-11-16 Giacomo Fragione

Numerical effects are known to plague adaptive mesh refinement (AMR) codes when treating massive particles, e.g. representing massive black holes (MBHs). In an evolving background, they can experience strong, spurious perturbations and then…

Astrophysics of Galaxies · Physics 2015-06-23 Alessandro Lupi , Francesco Haardt , Massimo Dotti

Galaxies grow alongside their central supermassive black holes (SMBHs), linked through fueling and feedback. However, the origins and details of this co-evolution remain unclear and differ significantly amongst modeling frameworks. Using a…

Active galactic nuclei (AGN) probably control the growth of their host galaxies via feedback in the form of wide-angle wind-driven outflows. These establish the observed correlations between supermassive black hole (SMBH) masses and host…

Astrophysics of Galaxies · Physics 2019-08-08 Kastytis Zubovas , Andrew R. King

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

The mergers of galaxies and supermassive black holes (SMBHs) are key drivers of galaxy evolution, contributing to the growth of both galaxies and their central black holes. Current and upcoming gravitational wave (GW) detectors -- Pulsar…

Astrophysics of Galaxies · Physics 2025-08-28 Yun Fang , Rong-Gen Cai

The Sloan Digital Sky survey detected luminous quasars at very high redshift, z>6. Follow-up observations indicated that at least some of these quasars are powered by supermassive black holes (SMBHs) with masses in excess of billion solar…

Astrophysics · Physics 2008-11-26 M. Volonteri , M. J. Rees

Feedback from accreting supermassive black holes (SMBHs) is thought to be a primary driver of quenching in massive galaxies, but the best way to implement SMBH physics into galaxy formation simulations remains ambiguous. As part of the…

According to recent general-relativistic simulations, the coalescence of two spinning black holes (BHs) could lead to recoil speeds of the BH remnant of up to thousands of km/s as a result of the emission of gravitational radiation. Such…

Astrophysics · Physics 2008-11-26 Abraham Loeb

The observed super-massive black hole (SMBH) mass -- galaxy velocity dispersion ($M_{\rm bh} - \sigma$) correlation may be established when winds/outflows from the SMBH drive gas out of the potential wells of classical bulges. Here we…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Sergei Nayakshin , Chris Power

We investigate the possibility that present-day galactic haloes contain a population of massive black holes (MBHs) that form by hierarchical merging of the black hole remnants of the first stars. Some of the MBHs may be large enough or…

Astrophysics · Physics 2009-11-07 Ranty R. Islam , James E. Taylor , Joseph Silk

We obtain empirical formulae for the final remnant black hole mass, spin, and recoil velocity from merging black-hole binaries with arbitrary mass ratios and spins. Our formulae are based on the mass ratio and spin dependence of the…

General Relativity and Quantum Cosmology · Physics 2010-05-25 Carlos O. Lousto , Manuela Campanelli , Yosef Zlochower , Hiroyuki Nakano

We present a cosmological zoom-in simulation targeting the high redshift compact progenitor phase of massive galaxies, with the most massive galaxy reaching a stellar mass of $M_{\star}=8.5\times 10^{10} \ M_{\odot}$ at $z=5$. The dynamics…

Supermassive black holes (SMBHs) can be ejected from their galactic centers due to gravitational wave recoil or the slingshot mechanism following a galaxy merger. If an ejected SMBH retains its inner accretion disk, it may be visible as an…

Astrophysics of Galaxies · Physics 2024-11-11 Anavi Uppal , Charlotte Ward , Suvi Gezari , Priyamvada Natarajan , Nianyi Chen , Patrick LaChance , Tiziana Di Matteo

We perform hydrodynamical simulations of major galaxy mergers using new methods for calculating the growth of massive black holes (BH) in galactic nuclei and their impact on the surrounding galaxy. We model BH growth by including a subgrid…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Jackson DeBuhr , Eliot Quataert , Chung-Pei Ma , Philip Hopkins

Hierarchical models of galaxy formation predict that galaxy mergers represent a significant transitional stage of rapid supermassive black hole (SMBH) growth. Yet, the connection between the merging process and enhanced active galactic…

We assess the influence of massive black hole (MBH) ejections from galaxy centres, due to the gravitational radiation recoil, along the cosmic merger history of the MBH population. We discuss the 'danger' of the recoil for MBHs as a…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Marta Volonteri , Kayhan Gultekin , Massimo Dotti
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