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Related papers: Mass Beyond Measure: Eccentric Searches for Black …

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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

It remains an open question whether the binary black hole mergers observed with gravitational-wave detectors originate from the evolution of isolated massive binary stars or were dynamically driven by perturbations from the environment.…

High Energy Astrophysical Phenomena · Physics 2026-01-23 Jakob Stegmann , Davide Gerosa , Isobel Romero-Shaw , Giulia Fumagalli , Hiromichi Tagawa , Lorenz Zwick

Stellar mass black hole binaries have individual masses between 10-80 solar masses. These systems may emit gravitational waves at frequencies detectable at Megaparsec distances by space-based gravitational wave observatories. In a previous…

General Relativity and Quantum Cosmology · Physics 2015-06-11 Matthew Benacquista , Jesus Hinojosa , Alberto Mata , Krzysztof Belczynski

As gravitational wave astronomy has entered an era of routine detections, it becomes increasingly important to precisely measure the physical parameters of individual events and infer population properties. Eccentricity is a key observable,…

General Relativity and Quantum Cosmology · Physics 2025-11-10 Yi-Fan Wang , Alexander H. Nitz

Eccentricity has emerged as a potentially useful tool for helping to identify the origin of black hole mergers. However, owing to the large number of harmonics required to compute the amplitude of an eccentric signal, eccentric templates…

High Energy Astrophysical Phenomena · Physics 2022-01-26 Lisa Randall , Alexandra Shelest , Zhong-Zhi Xianyu

Up to hundreds of black hole binaries individually resolvable by eLISA will coalesce in the Advanced LIGO/Virgo band within ten years, allowing for multi-band gravitational wave observations. Binaries formed via dynamical interactions in…

General Relativity and Quantum Cosmology · Physics 2016-09-14 Atsushi Nishizawa , Emanuele Berti , Antoine Klein , Alberto Sesana

The Laser Interferometer Space Antenna (LISA) is designed to detect gravitational wave signals from astrophysical sources, including those from coalescing binary systems of compact objects such as black holes. Colliding galaxies have…

General Relativity and Quantum Cosmology · Physics 2011-04-22 Joey Shapiro Key , Neil J. Cornish

Stellar-mass black-hole binaries are the most numerous gravitational-wave sources observed to date. Their properties make them suitable for observation both by ground- and space-based detectors. Starting from synthetic catalogues…

High Energy Astrophysical Phenomena · Physics 2025-05-29 R. Buscicchio , J. Torrado , C. Caprini , G. Nardini , N. Karnesis , M. Pieroni , A. Sesana

A space-based interferometer such as eLISA could observe few to few thousands progenitors of black hole binaries (BHBs) similar to those recently detected by Advanced LIGO. Gravitational radiation circularizes the orbit during inspiral, but…

High Energy Astrophysical Phenomena · Physics 2017-01-11 Atsushi Nishizawa , Alberto Sesana , Emanuele Berti , Antoine Klein

Due to their small mass, subsolar mass black hole binaries would have to be primordial in origin instead of the result of stellar evolution. Soon after formation in the early universe, primordial black holes can form binaries after…

High Energy Astrophysical Phenomena · Physics 2021-05-28 Yi-Fan Wang , Alexander H. Nitz

We construct evolutionary tracks for massive black hole binaries (MBHBs) embedded in a surrounding distribution of stars. The dynamics of the binary is evolved by taking into account the erosion of the central stellar cusp bound to the…

Cosmology and Nongalactic Astrophysics · Physics 2011-08-03 A. Sesana

The ultrahigh frequency emission of gravitational waves by binary systems of black holes has recently been investigated in details in the framework of new experimental ideas around resonant cavities. In this article, we consider the case of…

General Relativity and Quantum Cosmology · Physics 2025-05-23 Pierre Jamet , Aurélien Barrau , Killian Martineau

The orbital eccentricity of a merging binary black hole leaves an imprint on the associated gravitational-wave signal that can reveal whether the binary formed in isolation or in a dynamical environment, such as the core of a dense star…

High Energy Astrophysical Phenomena · Physics 2021-11-17 Isobel M. Romero-Shaw , Paul D. Lasky , Eric Thrane

We show that nearly half of all binary black hole (BBH) mergers dynamically assembled in globular clusters have measurable eccentricities ($e>0.01$) in the LISA band ($10^{-2}$ Hz), when General Relativistic corrections are properly…

High Energy Astrophysical Phenomena · Physics 2018-09-05 Johan Samsing , Daniel J. D'Orazio

Astrophysical formation channels of stellar-mass binary black holes (sBBHs) can induce significant orbital eccentricities in their early inspiral. We analyze the implications on the stochastic gravitational-wave background (SGWB) from…

General Relativity and Quantum Cosmology · Physics 2026-05-08 Ran Chen , Rohit S. Chandramouli , Federico Pozzoli , Riccardo Buscicchio , Enrico Barausse

The events detected by the LIGO Virgo KAGRA collaboration over a period of 10 years have yielded a treasure trove of signals from compact binary coalescences. None of these events have shown a confident signature of eccentricity. With…

General Relativity and Quantum Cosmology · Physics 2026-03-11 Johann Fernandes , Praveer Tiwari , Archana Pai

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

Stellar-mass black hole binaries (BHBs) near supermassive black holes (SMBH) in galactic nuclei undergo eccentricity oscillations due to gravitational perturbations from the SMBH. Previous works have shown that this channel can contribute…

High Energy Astrophysical Phenomena · Physics 2019-04-25 Bao-Minh Hoang , Smadar Naoz , Bence Kocsis , Will Farr , Jess McIver

Stellar-mass binary black holes may have circumbinary disks if formed through common-envelope evolution or within gaseous environments. Disks can drive binaries into wider and more eccentric orbits, while gravitational waves harden and…

High Energy Astrophysical Phenomena · Physics 2024-10-29 Isobel M. Romero-Shaw , Samir Goorachurn , Magdalena Siwek , Christopher J. Moore

The dynamical formation of binary black holes (BBHs) in globular clusters (GCs) may contribute significantly to the observed gravitational wave (GW) merger rate. Furthermore, LISA may detect many BBH sources from GCs at mHz frequencies,…

High Energy Astrophysical Phenomena · Physics 2025-05-13 Zeyuan Xuan , Kyle Kremer , Smadar Naoz