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Searches for gravitational-wave transients from binary black hole coalescences typically rely on one of two approaches: matched filtering with templates and morphology-independent excess power searches. Multiple algorithmic implementations…

General Relativity and Quantum Cosmology · Physics 2014-07-16 Satya Mohapatra , Laura Cadonati , Sarah Caudill , James Clark , Chad Hanna , Sergey Klimenko , Chris Pankow , Ruslan Vaulin , Gabriele Vedovato , Salvatore Vitale

Astrophysical compact binary systems consisting of neutron stars and blackholes are an important class of gravitational wave (GW) sources for advanced LIGO detectors. Accurate theoretical waveform models from the inspiral, merger and…

General Relativity and Quantum Cosmology · Physics 2017-11-15 Soumen Roy , Anand S. Sengupta , Nilay Thakor

The neutron star -- black hole (NSBH) binary GW200105 was recently found to have significant residual orbital eccentricity at a gravitational-wave frequency of 20 Hz~\cite{Morras:2025xfu}. The event was originally identified with moderate…

General Relativity and Quantum Cosmology · Physics 2026-05-13 Khun Sang Phukon , Patricia Schmidt , Gonzalo Morras , Geraint Pratten

Binary systems emit gravitational waves in a well-known pattern; for binaries in circular orbits, the emitted radiation has a frequency that is twice the orbital frequency. Systems in eccentric orbits, however, emit gravitational radiation…

Cosmology and Nongalactic Astrophysics · Physics 2015-04-13 E. F. D. Evangelista , J. C. N. de Araujo

In dense stellar regions, highly eccentric binaries of black holes and neutron stars can form through various n-body interactions. Such a binary could emit a significant fraction of its binding energy in a sequence of largely isolated…

General Relativity and Quantum Cosmology · Physics 2014-11-19 Kai Sheng Tai , Sean T. McWilliams , Frans Pretorius

Gravitational-wave searches for signals from inspiralling compact binaries have relied on matched filtering banks of waveforms (called template banks) to try to extract the signal waveforms from the detector data. These template banks have…

Data Analysis, Statistics and Probability · Physics 2013-06-12 Drew Keppel

Cosmic Explorer (CE) is a proposed next generation gravitational-wave observatory that would be sited in the United States. As of 2025, CE is in its design phase, with plans to begin operations in the 2030s together with the Einstein…

Instrumentation and Detectors · Physics 2026-04-03 Laurence Datrier , Geoffrey Lovelace , Joshua R. Smith , Andrew Saenz , Amber Romero

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

Compact object binaries formed from dynamics interactions will generically have non-zero orbital eccentricity. The gravitational waves from such binaries can change drastically depending on how large the eccentricity is, ranging from…

General Relativity and Quantum Cosmology · Physics 2021-08-31 Nicholas Loutrel

In close eclipsing binaries, measurements of the variations in binary's eclipse timing may be used to infer information about the existence of circumbinary objects. To determine the possibility of the detection of such variations with CoRoT…

Earth and Planetary Astrophysics · Physics 2015-05-27 R. Schwarz , N. Haghighipour , S. Eggl , E. Pilat-Lohinger , B. Funk

We analyze the observed distribution of the orbital eccentricity and period of binary radio pulsars in globular clusters using computational tools to simulate binary-single star interactions. Globular clusters have different groups of…

Solar and Stellar Astrophysics · Physics 2011-02-11 Manjari Bagchi , Alak Ray

Gravitational waves from coalescing compact binaries are one of the most promising sources for detectors such as LIGO, Virgo and GEO600. If the components of the binary posess significant angular momentum (spin), as is likely to be the case…

General Relativity and Quantum Cosmology · Physics 2009-09-02 Chris Van Den Broeck , Duncan A. Brown , Thomas Cokelaer , Ian Harry , Gareth Jones , B. S. Sathyaprakash , Hideyuki Tagoshi , Hirotaka Takahashi

Recent studies have shown that orbital eccentricity may indicate dynamical assembly as a formation mechanism for binary black holes. Eccentricity leaves a distinct signature in gravitational wave signals and it may be measured if the binary…

General Relativity and Quantum Cosmology · Physics 2024-02-14 Katelyn J. Wagner , Richard O'Shaughnessy

This work is the first in a series of studies aimed at understanding the dynamics of highly eccentric binary neutron stars, and constructing an appropriate gravitational-waveform model for detection. Such binaries are possible sources for…

General Relativity and Quantum Cosmology · Physics 2018-08-08 Huan Yang , William E. East , Vasileios Paschalidis , Frans Pretorius , Raissa F. P. Mendes

We present a novel resonance mechanism that can naturally occur in neutron star binaries: a spin-orbit resonance. This resonance locks the binary into a unique state where the neutron star spin evolves alongside the orbit. The resonance…

High Energy Astrophysical Phenomena · Physics 2025-11-13 Zhiqiang Miao , Huan Yang

Searches for gravitational waves from compact-binary mergers, which to date have reported $\sim100$ observations, have previously ignored binaries whose components are both consistent with the mass of neutron stars $(1 M_\odot$ to $ 2…

High Energy Astrophysical Phenomena · Physics 2024-02-08 Yi-Fan Wang , Alexander H. Nitz

Orbital eccentricity is a crucial physical effect to unveil the origin of compact-object binaries detected by ground- and spaced-based gravitational-wave (GW) observatories. Here, we perform for the first time a Bayesian inference study of…

General Relativity and Quantum Cosmology · Physics 2023-09-28 Antoni Ramos-Buades , Alessandra Buonanno , Jonathan Gair

This paper presents an in-depth study of how to estimate the sensitivity of searches for gravitational-wave pulsars -- rapidly-rotating neutron stars which emit quasi-sinusoidal gravitational waves. It is particularly concerned with…

General Relativity and Quantum Cosmology · Physics 2012-03-01 Karl Wette

We study the imprint of magnetic fields on gravitational waves emitted during the inspiral phase of eccentric binary neutron star systems. While observations indicate that neutron stars typically exhibit strong magnetic fields in the range…

High Energy Astrophysical Phenomena · Physics 2025-09-18 R. Prasad , Anushka Doke , Prayush Kumar

Orbital parameters of binary radio pulsars reveal the history of the pulsars' formation and evolution including dynamic interactions with other objects. Advanced technology has enabled us to determine these orbital parameters accurately in…

Solar and Stellar Astrophysics · Physics 2015-03-14 Manjari Bagchi
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