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We evaluate the cosmological coalescence and detection rates for massive black hole (MBH) binaries targeted by the gravitational wave observatory Laser Interferometer Space Antenna (LISA). Our calculation starts with a population of…

Astrophysics of Galaxies · Physics 2022-07-20 Kunyang Li , Tamara Bogdanović , David R. Ballantyne , Matteo Bonetti

The Laser Interferometer Space Antenna (LISA) will be able to detect massive black hole mergers throughout the visible Universe. These observations will provide unique information about black hole formation and growth, and the role black…

General Relativity and Quantum Cosmology · Physics 2020-07-01 Neil J. Cornish , Kevin Shuman

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

Coalescing binary black hole mergers are expected to be the strongest gravitational wave sources for ground-based interferometers, such as the LIGO, VIRGO, and GEO600, as well as the space-based interferometer LISA. Until recently it has…

General Relativity and Quantum Cosmology · Physics 2008-11-26 John G. Baker , Sean T. McWilliams , James R. van Meter , Joan Centrella , Dae-Il Choi , Bernard J. Kelly , Michael Koppitz

We show that Laser Interferometer Space Antenna can uniquely identify the sites of intermediate-mass binary black hole (IMBBH) mergers if they occur in Active Galactic Nuclei (AGN) disks with a gas density $\rho\geq10^{-12} \, {\rm g/cc}$…

High Energy Astrophysical Phenomena · Physics 2025-05-16 Poulami Dutta Roy , Parthapratim Mahapatra , Anuradha Samajdar , K. G. Arun

Joint gravitational-wave detections of stellar-mass black-hole binaries by ground- and space-based observatories will provide unprecedented opportunities for fundamental physics and astronomy. We present a semianalytic method to estimate…

High Energy Astrophysical Phenomena · Physics 2019-05-22 Davide Gerosa , Sizheng Ma , Kaze W. K. Wong , Emanuele Berti , Richard O'Shaughnessy , Yanbei Chen , Krzysztof Belczynski

We study the angular resolution of the gravitational wave detector LISA and show that numerical relativity can drastically improve the accuracy of position location for coalescing Super Massive Black Hole (SMBH) binaries. For systems with…

General Relativity and Quantum Cosmology · Physics 2008-06-15 Stanislav Babak , Mark Hannam , Sascha Husa , Bernard Schutz

We review the state of the evidence for the existence and observational appearance of supermassive black hole binaries. Such objects are expected from standard hierarchical galaxy evolution to form after two galaxies, each containing a…

We compute the expected gravitational wave signal from coalescing massive black hole (MBH) binaries at the center of galaxies in a hierarchical structure formation scenario in which seed holes of intermediate mass form far up in the dark…

Astrophysics · Physics 2009-11-10 Alberto Sesana , Francesco Haardt , Piero Madau , Marta Volonteri

The observability of gravitational waves from supermassive and intermediate-mass black holes by the forecoming Laser Interferometer Space Antenna (LISA), and the physics we can learn from the observations, will depend on two basic factors:…

Astrophysics · Physics 2009-11-11 Emanuele Berti

Beyond LISA, proposed space-based gravitational wave (GW) missions aim to explore the sub-millihertz to microhertz frequency band, with one key objective being the detection of massive binary black hole (MBBH) mergers across cosmic…

General Relativity and Quantum Cosmology · Physics 2025-09-25 Renjie Wang , Yumeng Xu , Gang Wang , Bin Hu , Rong-Gen Cai

The Advanced LIGO and Virgo detectors opened a new era to study black holes (BHs) in our Universe. A population of stellar-mass binary BHs (BBHs) are discovered to be heavier than previously expected. These heavy BBHs provide us an…

High Energy Astrophysical Phenomena · Physics 2020-06-16 Chang Liu , Lijing Shao , Junjie Zhao , Yong Gao

Theoretical models for the expected merger rates of intermediate-mass black holes (IMBHs) are vital for planned gravitational-wave detection experiments such as the Laser Interferometer Space Antenna (LISA). Using collisionless $N$-body…

Binary black holes (BBH) are expected to form and merge in active galactic nuclei (AGN), deep in the potential well of a supermassive black hole (SMBH), from populations that exist in a nuclear star cluster (NSC). Here we investigate the…

High Energy Astrophysical Phenomena · Physics 2025-09-19 Jake Postiglione , K. E. Saavik Ford , Henry Best , Barry McKernan , Matthew O'Dowd

We determine the main properties of the Galactic binary black hole (BBH) population detectable by LISA and strategies to distinguish them from the much more numerous white dwarf binaries. We simulate BBH populations based on cosmological…

Astrophysics of Galaxies · Physics 2020-03-18 Alberto Sesana , Astrid Lamberts , Antoine Petiteau

In paper I of this series we showed that a large percentage of the binary black hole (BBH) mergers that form through dynamical interactions in globular clusters will have significant eccentricity in the ~10^{-3}-10^{-1} Hz LISA band. In…

High Energy Astrophysical Phenomena · Physics 2018-10-19 Daniel J. D'Orazio , Johan Samsing

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

The growing number of binary black hole mergers detected through gravitational waves offers unprecedented insight into their underlying population, yet their astrophysical formation channels remain unresolved. We present a new method to…

General Relativity and Quantum Cosmology · Physics 2025-10-23 William J. Smith , Krystal Ruiz-Rocha , Kelly Holley-Bockelmann , Michela Mapelli , Karan Jani

The localization of stellar-mass binary black hole mergers using gravitational waves is critical in understanding the properties of the binaries' host galaxies, observing possible electromagnetic emission from the mergers, or using them as…

High Energy Astrophysical Phenomena · Physics 2019-08-07 K. Rainer Corley , Imre Bartos , Leo P. Singer , Andrew R. Williamson , Zoltan Haiman , Bence Kocsis , Samaya Nissanke , Zsuzsa Marka , Szabolcs Marka

Many scenarios have been proposed for the origin of the supermassive black holes (SMBHs) that are found in the centres of most galaxies. Many of these formation scenarios predict a high-redshift population of intermediate-mass black holes…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Joseph E. Plowman , Daniel C. Jacobs , Ronald W. Hellings , Shane L. Larson , Sachiko Tsuruta