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We investigate how the scaling relations between central black hole mass (Mbh) and host galaxy properties (velocity dispersion, bulge stellar mass and bulge luminosity) depend on the large scale environment. For each of a sample of 69…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Sean L. McGee

The growing population of binary black holes (BBHs) observed by gravitational wave detectors is a potential Rosetta stone for understanding their formation channels. Here, we use an upgraded version of our semi-analytic codes {\sc…

High Energy Astrophysical Phenomena · Physics 2022-03-02 Michela Mapelli , Yann Bouffanais , Filippo Santoliquido , Manuel Arca Sedda , M. Celeste Artale

Supermassive black holes (SMBHs) with dynamically measured masses have shown empirical correlations with host galaxy properties. These correlations are often the only method available to estimate SMBH masses and gather statistics for large…

Astrophysics of Galaxies · Physics 2025-06-11 Maggie C. Huber , Joseph Simon , Julia M. Comerford

The dynamical formation of black hole binaries in globular clusters that merge due to gravitational waves occurs more frequently in higher stellar density. Meanwhile, the probability to form intermediate mass black holes (IMBHs) also…

High Energy Astrophysical Phenomena · Physics 2020-09-09 Jongsuk Hong , Abbas Askar , Mirek Giersz , Arkadiusz Hypki , Suk-Jin Yoon

Dynamical interactions in dense star clusters could significantly influence the properties of black holes, leaving imprints on their gravitational-wave signatures. While previous studies have mostly focused on repeated black hole mergers…

High Energy Astrophysical Phenomena · Physics 2025-01-24 Fulya Kıroğlu , Kyle Kremer , Sylvia Biscoveanu , Elena González Prieto , Frederic A. Rasio

We use the high-resolution simulation MassiveBlackII to examine scaling relations between black hole mass (MBH) and host galaxy properties (sigma, M*, and LV), finding good agreement with observational data, especially at the high-mass end.…

Astrophysics of Galaxies · Physics 2015-10-07 Colin DeGraf , Tiziana Di Matteo , Tommaso Treu , Yu Feng , Jong-Hak Woo , Daeseong Park

Hierarchical black hole (BH) mergers are one of the most straightforward mechanisms to produce BHs inside and above the pair-instability mass gap. Here, we investigate the impact of globular cluster (GC) evolution on hierarchical mergers,…

High Energy Astrophysical Phenomena · Physics 2024-08-14 Stefano Torniamenti , Michela Mapelli , Carole Périgois , Manuel Arca Sedda , M. Celeste Artale , Marco Dall'Amico , M. Paola Vaccaro

The conventional view of stellar-mass binary black hole (sBBH) mergers is that there should not be enough matter present to produce a detectable electromagnetic transient. However, there ARE a number of mechanisms for producing such a…

High Energy Astrophysical Phenomena · Physics 2019-03-28 K. E. Saavik Ford , Federico Fraschetti , Chris Fryer , Steven L. Liebling , Rosalba Perna , Peter Shawhan , Péter Veres , Bing Zhang

Based on the consideration of potential energy of the di-black-hole as a function of mass asymmetry (transfer) collective coordinate, the possibility of matter transfer between the black holes in a binary system is investigated. The…

Astrophysics of Galaxies · Physics 2020-12-17 G. G. Adamian , N. V. Antonenko , H. Lenske , V. V. Sargsyan

We study the dynamical evolution of supermassive black holes, in the late stage of galaxy mergers, from kpc to pc scales. In particular, we capture the formation of the binary, a necessary step before the final coalescence, and trace back…

Astrophysics of Galaxies · Physics 2017-08-30 Hugo Pfister , Alessandro Lupi , Pedro R. Capelo , Marta Volonteri , Jillian M. Bellovary , Massimo Dotti

We examine the origin and evolution of correlations between properties of supermassive black holes (BHs) and their host galaxies using simulations of major galaxy mergers, including the effects of gas dissipation, cooling, star formation,…

We explore the connection between the gravitational wave (GW) merger rates of stellar-mass binary black holes (BBH) and galaxy properties. We do this by generating populations of stars using the binary population synthesis code COMPAS and…

Astrophysics of Galaxies · Physics 2023-06-28 Liana Rauf , Cullan Howlett , Tamara M. Davis , Claudia D. P. Lagos

Pulsar timing arrays are sensitive to gravitational waves from supermassive black hole (SMBH) binaries at orbital separations of << 1pc. There is currently an observational paucity of such systems, although they are central figures in…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Sarah Burke-Spolaor

The ground-based measurement of gravitational waves (GW) from merging binary black holes (BBH) uniquely allows determination of spins of stellar-remnant black holes (BH), thereby offering insights into their formation mechanisms. The…

High Energy Astrophysical Phenomena · Physics 2025-07-08 Sambaran Banerjee , Aleksandra Olejak

Short-period massive binary stars are predicted to undergo chemically homogeneous evolution (CHE), making them prime candidates for producing binary black holes (BBHs) that may merge within the age of the Universe. Most of these binaries…

Mergers are fundamental to the standard paradigm of galaxy evolution, and provide a natural formation mechanism for supermassive black hole binaries. The formation process of such a binary can have a direct impact on the rate at which stars…

Astrophysics of Galaxies · Physics 2019-10-16 Eric R. Coughlin , Philip J. Armitage , Giuseppe Lodato , C. J. Nixon

Observations have shown that supermassive black holes in nearby elliptical galaxies correlate tightly with the stellar velocity dispersion (the $\MBH - \sigma$ relation) and the stellar mass (the $\MBH - \Mhost$ relation) of their host…

Astrophysics of Galaxies · Physics 2014-10-31 Sydney Sherman , Mouyuan Sun , Qirong Zhu , Jonathan R. Trump , Yuexing Li

Black hole mass ($M_{BH}$) scaling relations are typically derived using the properties of a galaxy's bulge and samples dominated by (high-mass) early-type galaxies. Studying late-type galaxies should provide greater insight into the mutual…

Astrophysics of Galaxies · Physics 2019-03-12 Benjamin L. Davis , Alister W. Graham , Ewan Cameron

Massive black hole (BH) mergers will be key targets of future gravitational wave and electromagnetic observational facilities. In order to constrain BH evolution with the information extracted from BH mergers, one must take into account the…

Astrophysics of Galaxies · Physics 2023-10-03 C. A. Dong-Páez , M. Volonteri , R. S. Beckmann , Y. Dubois , M. Trebitsch , A. Mangiagli , S. Vergani , N. Webb

Recent theoretical studies suggest that stellar-mass binary black holes (BBHs) would merge more efficiently due to the Kozai-Lidov mechanism if these binaries form in the vicinity of supermassive black holes (SMBHs). Since SMBHs are likely…

High Energy Astrophysical Phenomena · Physics 2020-01-08 Yun Fang , Xian Chen , Qing-Guo Huang