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We introduce a novel method to generate a bank of gravitational-waveform templates of binary black hole (BBH) mergers for matched-filter searches in LIGO, Virgo and Kagra data.We derive a novel expression for the metric approximation to the…

General Relativity and Quantum Cosmology · Physics 2024-01-23 Stefano Schmidt , Bhooshan Gadre , Sarah Caudill

We derive the probability for a newly formed binary black hole (BBH) to undergo an eccentric gravitational wave (GW) merger during binary-single interactions inside a stellar cluster. By integrating over the hardening interactions such a…

High Energy Astrophysical Phenomena · Physics 2018-05-30 Johan Samsing

The astrophysical origin of binary black hole mergers discovered by LIGO and Virgo remains uncertain. Efforts to reconstruct the processes that lead to mergers typically rely on either astrophysical models with fixed parameters, or…

The population of binary black hole mergers observed in gravitational waves, together with astrophysical simulations, can help us to understand the properties of the progenitors and the binary formation mechanisms in different astrophysical…

High Energy Astrophysical Phenomena · Physics 2023-12-12 Ken K. Y. Ng , Konstantinos Kritos , Andrea Antonelli , Roberto Cotesta , Emanuele Berti

The LIGO-Virgo-KAGRA (LVK) Collaboration has reported nearly 100 BH-BH mergers. The LVK provides estimates of rates, masses, effective spins, and redshifts for these mergers. Yet, the formation channel(s) of the mergers remains uncertain.…

High Energy Astrophysical Phenomena · Physics 2022-08-31 K. Belczynski , Z. Doctor , M. Zevin , A. Olejak , S. Banerjee , D. Chattopadhyay

The higher-multipoles of gravitational wave signals from coalescing compact binaries play a vital role in the accurate reconstruction of source properties, bringing about a deeper and nuanced understanding of fundamental physics and…

General Relativity and Quantum Cosmology · Physics 2021-03-17 Soumen Roy , Anand S. Sengupta , K. G. Arun

The possible formation mechanisms of massive close binary black holes (BHs) that can merge in the Hubble time to produce powerful gravitational wave bursts detected during advanced LIGO O1 and O2 science runs include the evolution from…

High Energy Astrophysical Phenomena · Physics 2018-12-10 Konstantin Postnov , Alexander Kuranov

The detection of gravitational waves (GWs) from binary black holes (BBHs) has allowed the theory of general relativity to be tested in a previously unstudied regime: that of strong curvature and high GW luminosities. One distinctive and…

High Energy Astrophysical Phenomena · Physics 2020-04-29 Oliver M. Boersma , David A. Nichols , Patricia Schmidt

The growing sample of LIGO--Virgo black holes (BHs) opens new perspectives for the study of massive binary evolution. Here, we study the impact of mass accretion efficiency and common envelope on the properties of binary BH (BBH) mergers,…

High Energy Astrophysical Phenomena · Physics 2021-12-07 Yann Bouffanais , Michela Mapelli , Filippo Santoliquido , Nicola Giacobbo , Giuliano Iorio , Guglielmo Costa

Gravitational wave echo signals have been proposed as evidence for the modification of the spacetime structure near the classical event horizon. These signals are expected to occur after the mergers of compact binaries as a sequence of weak…

General Relativity and Quantum Cosmology · Physics 2023-09-06 Nami Uchikata , Tatsuya Narikawa , Hiroyuki Nakano , Norichika Sago , Hideyuki Tagoshi , Takahiro Tanaka

The observation of gravitational waves from multiple compact binary coalescences by the LIGO-Virgo-KAGRA detector networks has enabled us to infer the underlying distribution of compact binaries across a wide range of masses, spins, and…

General Relativity and Quantum Cosmology · Physics 2023-11-01 Anarya Ray , Ignacio Magaña Hernandez , Siddharth Mohite , Jolien Creighton , Shasvath Kapadia

Since the initial detection of Gravitational Waves in 2015, 50 candidate events have been reported by the LIGO-Virgo-KAGRA collaboration. As the current generation of detectors move towards their design sensitivity the rate of these…

General Relativity and Quantum Cosmology · Physics 2022-02-16 Philip Relton , Vivien Raymond

We present a search for gravitational waves from the coalescence of sub-solar mass black hole binaries using data from the first half of Advanced LIGO and Virgo's third observing run. The observation of a sub-solar mass black hole merger…

High Energy Astrophysical Phenomena · Physics 2021-10-13 Alexander H. Nitz , Yi-Fan Wang

The first discovery of the gravitational wave (GW) event, GW150914, suggests a higher merger rate of black-hole (BH) binaries. If this is true, a number of BH binaries will be observed via the second-generation GW detectors, and the…

Cosmology and Nongalactic Astrophysics · Physics 2016-07-13 Toshiya Namikawa , Atsushi Nishizawa , Atsushi Taruya

Based on a dynamical formation model of a supermassive black hole (SMBH), we estimate the expected observational profile of gravitational wave at ground-based detectors, such as KAGRA or advanced LIGO/VIRGO. Noting that the second…

Astrophysics of Galaxies · Physics 2017-02-03 Hisa-aki Shinkai , Nobuyuki Kanda , Toshikazu Ebisuzaki

The majority of gravitational wave (GW) events detected so far by LIGO/Virgo originate from binary black hole (BBH) mergers. Among the different binary evolution paths, the merger of BBHs in accretion discs of active galactic nuclei (AGNs)…

Astrophysics of Galaxies · Physics 2020-07-01 Matthias Gröbner , Wako Ishibashi , Shubhanshu Tiwari , Maria Haney , Philippe Jetzer

Mergers of stellar-mass black holes on highly eccentric orbits are among the targets for ground-based gravitational-wave detectors, including LIGO, VIRGO, and KAGRA. These sources may commonly form through gravitational-wave emission in…

High Energy Astrophysical Phenomena · Physics 2018-03-21 László Gondán , Bence Kocsis , Péter Raffai , Zsolt Frei

We perform Bayesian analysis of gravitational-wave signals from non-spinning, intermediate-mass black-hole binaries (IMBHBs) with observed total mass, $M_{\mathrm{obs}}$, from $50\mathrm{M}_{\odot}$ to $500\mathrm{M}_{\odot}$ and mass ratio…

General Relativity and Quantum Cosmology · Physics 2015-09-01 Philip B. Graff , Alessandra Buonanno , B. S. Sathyaprakash

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…

With the release of the fourth LIGO--Virgo--KAGRA gravitational-wave catalog (GWTC-4), we are starting to gain a detailed view of the population of merging binary black holes. The formation channels of these black holes is not clearly…

High Energy Astrophysical Phenomena · Physics 2025-09-22 Sharan Banagiri , Eric Thrane , Paul D. Lasky
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