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Combined gravitational-wave (GW) and electromagnetic (EM) observations of compact binary mergers should enable detailed studies of astrophysical processes in the strong-field gravity regime. Networks of GW interferometers have poor angular…

High Energy Astrophysical Phenomena · Physics 2015-06-11 Samaya Nissanke , Mansi Kasliwal , Alexandra Georgieva

Compact binary coalescences are a promising source of gravitational waves for second-generation interferometric gravitational-wave detectors. Although matched filtering is the optimal search method for well-modeled systems, alternative…

General Relativity and Quantum Cosmology · Physics 2015-06-22 Michael Coughlin , Eric Thrane , Nelson Christensen

Compact binaries that emit gravitational waves in the sensitivity band of ground-based detectors can have non-negligible eccentricities just prior to merger, depending on the formation scenario. We develop a purely analytic,…

General Relativity and Quantum Cosmology · Physics 2014-10-15 E. A. Huerta , Prayush Kumar , Sean T. McWilliams , Richard O'Shaughnessy , Nicolas Yunes

Rapid localization of gravitational-wave events is important for the success of the multi-messenger observations. The forthcoming improvements and constructions of gravitational-wave detectors will enable detecting and localizing…

General Relativity and Quantum Cosmology · Physics 2021-09-15 Takuya Tsutsui , Atsushi Nishizawa , Soichiro Morisaki

We present the expected performance regarding fast sky localization of coalescing binaries with a network of three gravitational wave detectors having heterogeneous sensitivities, such as the LIGO-Virgo network. A hierarchical approach can…

High Energy Astrophysical Phenomena · Physics 2019-05-08 Y. Fujii , T. Adams , F. Marion , R. Flaminio

Detection of gravitational waves (GW) from highly eccentric binary black hole (BBH) systems can provide insight into their dynamics and formation. To date, all of the LIGO-Virgo BBH detections have been made using quasi-circular templates…

General Relativity and Quantum Cosmology · Physics 2021-11-17 Belinda D. Cheeseboro , Paul T. Baker

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

The couplings between supermassive black-hole binaries and their environments within galactic nuclei have been well studied as part of the search for solutions to the final parsec problem. The scattering of stars by the binary or the…

General Relativity and Quantum Cosmology · Physics 2016-01-26 S. R. Taylor , E. A. Huerta , J. R. Gair , S. T. McWilliams

The detection of orbital eccentricity for a binary black hole system via gravitational waves is a key signature to distinguish between the possible binary origins. The identification of eccentricity has been difficult so far due to the…

General Relativity and Quantum Cosmology · Physics 2023-09-19 H. L. Iglesias , J. Lange , I. Bartos , S. Bhaumik , R. Gamba , V. Gayathri , A. Jan , R. Nowicki , R. O'Shaughnessy , D. Shoemaker , R. Venkataramanan , K. Wagner

Rapid detection of compact binary coalescence (CBC) with a network of advanced gravitational-wave detectors will offer a unique opportunity for multi-messenger astronomy. Prompt detection alerts for the astronomical community might make it…

The addition of KAGRA to the global gravitational-wave detector network introduces new baselines and complementary antenna response patterns that can enhance sky localization for compact binary coalescences. We investigate KAGRA's role in…

General Relativity and Quantum Cosmology · Physics 2026-04-16 Alvin K. Y. Li , Peony K. K. Lai , Elwin K. Y. Li , Otto A. Hannuksela

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

I expand on the results of a recent work in which a novel weighting algorithm was shown to substantially increase the accuracy of an old, non-Bayesian computational approach for inferring the source direction of a gravitational wave from…

Instrumentation and Methods for Astrophysics · Physics 2020-03-31 Tom McClain

Eccentric compact binary mergers are significant scientific targets for current and future gravitational wave observatories. To detect and analyze eccentric signals, there is an increasing effort to develop waveform models, numerical…

General Relativity and Quantum Cosmology · Physics 2023-11-10 Md Arif Shaikh , Vijay Varma , Harald P. Pfeiffer , Antoni Ramos-Buades , Maarten van de Meent

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

Because of the electromagnetic radiation produced during the merger, compact binary coalescences with neutron stars may result in multi-messenger observations. In order to follow up on the gravitational-wave signal with electromagnetic…

Recent discoveries of gravitational wave (GW) signals from astrophysical compact binary systems of neutron stars and black holes have firmly established them as prime sources for advanced GW detectors. Theoretical templates of expected…

General Relativity and Quantum Cosmology · Physics 2019-02-04 Soumen Roy , Anand S. Sengupta , Parameswaran Ajith

We derive an expression for the accuracy with which sources can be localized using a network of gravitational wave detectors. The result is obtained via triangulation, using timing accuracies at each detector and is applicable to a network…

General Relativity and Quantum Cosmology · Physics 2012-12-18 Stephen Fairhurst

Wide, highly eccentric ($e>0.9$) compact binaries can naturally arise as progenitors of gravitational wave (GW) mergers. These systems are expected to have a significant population in the mHz band (e.g., $\sim 3-45$ detectable stellar-mass…

High Energy Astrophysical Phenomena · Physics 2026-05-28 Zeyuan Xuan , Smadar Naoz , Alvin K. Y. Li , Bence Kocsis , Erik Petigura , Alan M. Knee , Jess McIver , Kyle Kremer , Will M. Farr

We present the prospects for the early (pre-merger) detection and localization of compact-binary coalescences using gravitational waves over the next 10 years. Early warning can enable the direct observation of the prompt and early…

High Energy Astrophysical Phenomena · Physics 2020-10-20 Alexander H. Nitz , Marlin Schäfer , Tito Dal Canton