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Related papers: Detecting Accelerating Eccentric Binaries in the L…

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Gravitational waves (GW) from eccentric binaries have intricate signals encoding important features about the location, creation and evolution of the sources. Eccentricity shortens the merger time, making the emitted GW statistically…

General Relativity and Quantum Cosmology · Physics 2024-05-13 Dillon Buskirk , Maria C. Babiuc Hamilton

We explore the eccentricity measurement threshold of LISA for gravitational waves radiated by massive black hole binaries (MBHBs) with redshifted BH masses $M_z$ in the range $10^{4.5}$-$10^{7.5}~{\rm M}_\odot$ at redshift $z=1$. The…

Astrophysics of Galaxies · Physics 2025-01-16 Mudit Garg , Shubhanshu Tiwari , Andrea Derdzinski , John G. Baker , Sylvain Marsat , Lucio Mayer

Stellar-mass binary black holes (sBBHs) formed in globular clusters (GCs) are promising sources for multiband gravitational wave (GW) observations, particularly with low- and middle-frequency detectors. These sBBHs can retain detectable…

High Energy Astrophysical Phenomena · Physics 2025-12-16 Yuetong Zhao , Abbas Askar , Youjun Lu , Zhoujian Cao , Mirek Giersz , Grzegorz Wiktorowicz , Arkadiusz Hypki , Lucas Hellstrom , Sohaib Ali , Wei-Tou Ni

We discuss the prospects of eLISA for detecting gravitational waves (GWs) from Galactic binary black holes (BBHs) similar to GW150914. For a comoving merger rate that is consistent with current observation, eLISA is likely to identify at…

High Energy Astrophysical Phenomena · Physics 2016-04-20 Naoki Seto

Orbital eccentricity in gravitational-wave signals from merging compact object binaries is a powerful indicator of their formation channel. Several binary black hole mergers and a neutron star--black hole merger have been reported to…

High Energy Astrophysical Phenomena · Physics 2026-05-19 Teagan A. Clarke , Isobel M. Romero-Shaw , Charlie Hoy , Jakob Stegmann , Paul D. Lasky , Eric Thrane

Astrophysical population simulations predict that a subset of dynamically formed binary black holes (BBHs) may possess eccentricity $\gtrsim 0.1$ at a gravitational wave (GW) frequency of $10 \,\text{Hz}$. Presently, the LIGO-Virgo-KAGRA…

General Relativity and Quantum Cosmology · Physics 2024-12-31 Sajad A. Bhat , Pankaj Saini , Marc Favata , Chinmay Gandevikar , Chandra Kant Mishra , K. G. Arun

The problem of gravitational wave parameter estimation and source localization is crucial in gravitational wave astronomy. Gravitational waves emitted by compact binary coalescences in the sensitivity band of second-generation ground-based…

General Relativity and Quantum Cosmology · Physics 2019-12-11 Hsing-Po Pan , Chun-Yu Lin , Zhoujian Cao , Hwei-Jang Yo

Gravitational wave source localization problem is important in gravitational wave astronomy. Regarding ground-based detector, almost all of the previous investigations only considered the difference of arrival time among the detector…

General Relativity and Quantum Cosmology · Physics 2017-11-22 Sizheng Ma , Zhoujian Cao , Chun-Yu Lin , Hsing-Po Pan , Hwei-Jang Yo

The gravitational-wave (GW) detections reported by the LIGO-Virgo-KAGRA (LVK) collaboration have so far been consistent with quasi-circular compact binary coalescences (CBCs). Nevertheless, a small fraction of binaries driven to merge…

General Relativity and Quantum Cosmology · Physics 2026-03-02 Priscilla Canizares , Seppe J. Staelens , Isobel Romero-Shaw

The localization and distance inference of gravitational waves are two crucial factors for dark sirens as precise probes of cosmology, astrophysics, and fundamental physics. In this Letter, for the first time we investigate the parameter…

General Relativity and Quantum Cosmology · Physics 2022-11-01 Tao Yang , Rong-Gen Cai , Zhoujian Cao , Hyung Mok Lee

We investigate the prospects of observing residual eccentricity in a population of compact binaries by calculating the power in the eccentric harmonics, following the methodology in arXiv:2411.04187. Although most observed compact binary…

High Energy Astrophysical Phenomena · Physics 2025-12-09 Mukesh Kumar Singh , Ben G. Patterson , Stephen Fairhurst

Stellar mass binary black holes of unknown formation mechanism have been observed, motivating new methods for distinguishing distinct black hole populations. This work explores how the orbital eccentricity of stellar mass binary black holes…

General Relativity and Quantum Cosmology · Physics 2024-03-04 Nicholas DePorzio , Lisa Randall , Zhong-Zhi Xianyu

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

Pulsar Timing Arrays (PTA) around the world are using the incredible consistency of millisecond pulsars to measure low frequency gravitational waves from (super)Massive Black Hole (MBH) binaries. We use comprehensive MBH merger models based…

High Energy Astrophysical Phenomena · Physics 2017-09-06 Luke Zoltan Kelley , Laura Blecha , Lars Hernquist , Alberto Sesana , Stephen R. Taylor

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

Our current understanding is that an environment - mainly consisting of gas or stars - is required to bring massive black hole binaries (MBHBs) with total redshifted mass $M_z\sim[10^{4},10^7]~{\rm M}_\odot$ to the LISA band from parsec…

Astrophysics of Galaxies · Physics 2025-01-15 Mudit Garg , Laura Sberna , Lorenzo Speri , Francisco Duque , Jonathan Gair

A significant fraction of compact-object mergers in galactic nuclei are expected to be eccentric in the Laser Interferometer Space Antenna (LISA) frequency sensitivity range, $10^{-4} - 10^{-1}\ \rm Hz$. Several compact binaries detected by…

High Energy Astrophysical Phenomena · Physics 2026-02-04 Evgeni Grishin , Isobel M. Romero-Shaw , Alessandro A. Trani

Mergers of compact binaries, such as binary neutron stars (BNSs), neutron star-black hole binaries (NSBHs), and binary black holes (BBHs), are expected to be the best candidates for the sources of gravitational waves (GWs) and the leading…

High Energy Astrophysical Phenomena · Physics 2018-02-07 Wei-Wei Tan , Xi-Long Fan , F. Y. Wang

The measurement of eccentricity would provide strong constraints on the formation channel of stellar-mass binary black holes. However, current ground-based gravitational wave detectors will, in most cases, not be able to measure…

High Energy Astrophysical Phenomena · Physics 2024-06-13 Han Wang , Ian Harry , Alexander Nitz , Yi-Ming Hu

During its inspiral stage, a binary black hole (BBH) produces characteristic gravitational wave (GW) signals. The waveform of the GW signals can be described by the physical parameters of BBH, such as the masses of the black holes and the…

General Relativity and Quantum Cosmology · Physics 2024-09-04 Han Gil Choi , Tao Yang , Hyung Mok Lee