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As the number of gravitational-wave detections grows, the merger rate of binary black holes (BBHs) can help us to constrain their formation, the properties of their progenitors, and their birth environment. Here, we aim to address the…

High Energy Astrophysical Phenomena · Physics 2025-06-24 Cecilia Sgalletta , Michela Mapelli , Lumen Boco , Filippo Santoliquido , M. Celeste Artale , Giuliano Iorio , Andrea Lapi , Mario Spera

Advanced LIGO achieved the first detection of the gravitational wave, which was from a merging binary black hole (BBH). In the near future, more merger events will be observed, and the mass distribution of them will become available. The…

High Energy Astrophysical Phenomena · Physics 2017-12-20 Michiko Fujii , Ataru Tanikawa , Junichiro Makino

We investigate the impact of uncertainty in the metallicity-specific star formation rate over cosmic time on predictions of the rates and masses of double compact object mergers observable through gravitational waves. We find that this…

Observations of gravitational waves from binary black hole (BBH) mergers have measured the redshift evolution of the BBH merger rate. The number density of galaxies in the Universe evolves differently with redshift based on their physical…

High Energy Astrophysical Phenomena · Physics 2025-02-05 Aditya Vijaykumar , Maya Fishbach , Susmita Adhikari , Daniel E. Holz

Binary black holes (BBHs) are one of the endpoints of isolated binary evolution, and their mergers a leading channel for gravitational wave events. Here, using the evolutionary code \textsc{StarTrack}, we study the statistical properties of…

High Energy Astrophysical Phenomena · Physics 2018-04-19 Rosalba Perna , Martyna Chruslinska , Alessandra Corsi , Krzysztof Belczynski

The next generation ground-based gravitational wave interferometers will possibly observe mergers of binary black holes (BBHs) and binary neutron stars (BNSs) to redshift $z\gtrsim{}10$ and $z\gtrsim{}2$, respectively. Here, we characterize…

High Energy Astrophysical Phenomena · Physics 2019-05-08 Michela Mapelli , Nicola Giacobbo , Filippo Santoliquido , M. Celeste Artale

Gravitational waves from merging binary black holes can be used to shed light on poorly understood aspects of massive binary stellar evolution, such as the evolution of massive stars (including their mass-loss rates), the common envelope…

High Energy Astrophysical Phenomena · Physics 2022-10-26 Simon Stevenson , Teagan Clarke

Gravitational wave detectors are observing an increasing number of binary black hole (BBH) mergers, revealing a bimodal mass distribution of BBHs, which hints at diverse formation histories for these systems. Using the rapid binary…

High Energy Astrophysical Phenomena · Physics 2025-10-10 Lei Li , Guoliang Lv , Chunhua Zhu , Sufen Guo , Hongwei Ge , Weimin Gu , Zhuowen Li , Xiaolong He

The cosmological evolution of the binary black hole (BH) merger rate and the energy density of the gravitational-wave (GW) background are investigated. To evaluate the redshift dependence of the BH formation rate, BHs are assumed to…

High Energy Astrophysical Phenomena · Physics 2016-11-30 Ken'ichiro Nakazato , Yuu Niino , Norichika Sago

Using a population synthesis approach, we compute the total merger rate in the local Universe for double neutron stars, double black holes, and black hole -- neutron star binaries. These compact binaries are the prime source candidates for…

We explore the host galaxies of compact-object binaries (black hole--black hole binaries, BHBs; neutron star--black hole binaries, NSBHs; double-neutron stars; DNSs) across cosmic time, by means of population-synthesis simulations combined…

High Energy Astrophysical Phenomena · Physics 2019-09-25 Mattia Toffano , Michela Mapelli , Nicola Giacobbo , Maria Celeste Artale , Giancarlo Ghirlanda

The dense environment of globular clusters (GCs) can facilitate the formation of binary black holes (BBHs), some of which can merge with gravitational waves (GW) within the age of the Universe. We have performed a survey of Monte-Carlo…

High Energy Astrophysical Phenomena · Physics 2018-08-22 Jongsuk Hong , Enrico Vesperini , Abbas Askar , Mirek Giersz , Magdalena Szkudlarek , Tomasz Bulik

Understanding the host galaxy properties of stellar binary black hole (SBBH) mergers is important for revealing the origin of the SBBH gravitational-wave sources detected by advanced LIGO and helpful for identifying their electromagnetic…

Astrophysics of Galaxies · Physics 2018-01-10 Liang Cao , Youjun Lu , Yuetong Zhao

The majority of massive stars are found in close binaries which: (i) are prone to merge and (ii) are accompanied by another distant tertiary star (triples). Here, we study the evolution of the stellar post-merger binaries composed of the…

Astrophysics of Galaxies · Physics 2022-10-11 Jakob Stegmann , Fabio Antonini , Fabian R. N. Schneider , Vaibhav Tiwari , Debatri Chattopadhyay

In the upcoming gravitational wave (GW) observing runs, identifying host galaxies is crucial as it provides essential redshift information and enables the use of GW events as standard sirens. However, pinpointing host galaxies remains…

High Energy Astrophysical Phenomena · Physics 2024-08-05 Mankeun Jeong , Myungshin Im

Within the next decade, ground based gravitational wave detectors are in principle capable of determining the compact object merger rate per unit volume of the local universe to better than 20% with more than 30 detections. We argue that…

Astrophysics · Physics 2015-05-13 R. O'Shaughnessy , R. Kopparapu , K. Belczynski

Compact binary mergers forming in star clusters may exhibit distinctive features that can be used to identify them among observed gravitational-wave (GW) sources. Such features likely depend on the host cluster structure and the physics of…

High Energy Astrophysical Phenomena · Physics 2023-07-12 Manuel Arca Sedda , Albrecht W. H. Kamlah , Rainer Spurzem , Francesco Paolo Rizzuto , Mirek Giersz , Thorsten Naab , Peter Berczik

The connection between the binary black hole (BBH) mergers observed by LIGO-Virgo-KAGRA (LVK) and their stellar progenitors remains uncertain. Specifically, the fraction $\epsilon$ of stellar mass that ends up in BBH mergers and the delay…

High Energy Astrophysical Phenomena · Physics 2024-03-27 Aryanna Schiebelbein-Zwack , Maya Fishbach

We investigate the merging rates of compact binaries in galaxies, and the related detection rate of gravitational wave (GW) events with AdvLIGO/Virgo and with the Einstein Telescope. To this purpose, we rely on three basic ingredients: (i)…

Astrophysics of Galaxies · Physics 2019-09-04 L. Boco , A. Lapi , S. Goswami , F. Perrotta , C. Baccigalupi , L. Danese

We compare the impacts of uncertainties in both binary population synthesis models and the cosmic star formation history on the predicted rates of Gravitational Wave compact binary merger (GW) events. These uncertainties cause the predicted…

Astrophysics of Galaxies · Physics 2020-01-15 Petra N. Tang , J. J. Eldridge , Elizabeth R. Stanway , John C. Bray