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Gravitational waves from a binary with a single dynamically significant spin, notably including precessing black hole-neutron star (BH-NS) binaries, let us constrain that binary's properties: the two masses and the dominant black hole spin.…

General Relativity and Quantum Cosmology · Physics 2015-09-23 R. O'Shaughnessy , P. Nepal , A. Lundgren

In the context of the future Laser Interferometer Space Antenna (LISA) mission, galactic binary systems of white dwarfs and neutron stars will represent the dominant source of Gravitational Waves (GWs) within the…

General Relativity and Quantum Cosmology · Physics 2022-11-28 Adrien Bourgoin , Christophe Le Poncin-Lafitte , Stéphane Mathis , Marie-Christine Angonin

The space-based gravitational wave (GW) detector, \emph{evolved Laser Interferometer Space Antenna} (eLISA) is expected to observe millions of compact Galactic binaries that populate our Milky Way. GW measurements obtained from the eLISA…

Solar and Stellar Astrophysics · Physics 2015-06-22 Sweta Shah , Gijs Nelemans

I review the expected Galactic sources of gravitational waves, concentrating on the low-frequency domain and summarise the current observational and theoretical knowledge we have. A model for the Galactic population of close binaries, which…

Astrophysics · Physics 2009-11-10 G. Nelemans

White dwarf binaries are the most common compact binaries in the Universe and are especially important for low-frequency gravitational wave detectors such as LISA. There are a number of open questions about binary evolution and the Galactic…

Astrophysics · Physics 2008-11-26 G. Nelemans

A joint fit of the mass and redshift distributions of the population of Binary Black Holes detected with Gravitational-Wave observations can be used to obtain constraints on the Hubble parameter and on deviations from General Relativity in…

General Relativity and Quantum Cosmology · Physics 2022-11-29 Michele Mancarella , Nicola Borghi , Stefano Foffa , Edwin Genoud-Prachex , Francesco Iacovelli , Michele Maggiore , Michele Moresco , Matteo Schulz

Stellar-mass compact binaries in eccentric orbits are almost guaranteed sources of gravitational waves for Laser Interferometer Space Antenna. We present a prescription to compute accurate and efficient gravitational-wave polarizations…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Manuel Tessmer , Achamveedu Gopakumar

Observing gravitational waves from sub-solar-mass, inspiraling compact binaries would provide almost smoking-gun evidence for primordial black holes. Here, we develop a method to search for ultra-compact binaries with chirp masses ranging…

General Relativity and Quantum Cosmology · Physics 2025-12-15 Andrew L. Miller , Lorenzo Pierini

Third-generation gravitational-wave detectors will observe up to millions of merging binary black holes. With such a vast dataset, stacking events into population analyses will arguably be more important than analyzing single sources. We…

High Energy Astrophysical Phenomena · Physics 2025-03-14 Viola De Renzis , Francesco Iacovelli , Davide Gerosa , Michele Mancarella , Costantino Pacilio

Binary systems with ultrashort-period planetary-mass companions are expected to radiate continuous gravitational waves (GWs). However, earlier studies found that the detectability of such systems by the Laser Interferometer Space Antenna…

High Energy Astrophysical Phenomena · Physics 2026-04-08 Abdusattar Kurban , Xia Zhou , Na Wang , Yong-Feng Huang , Wenming Yan , Jianping Yuan , Ali Esamdin , Yu-Bin Wang , Zhigang Wen , Rai Yuen

Ground-based gravitational-wave (GW) observatories have transformed our view of compact-object mergers, yet their reach still limits a comprehensive reconstruction of the processes that generate these systems. Only next-generation…

Gravitational wave (GW) observations have provided a novel tool to explore the universe. In the near future, space-borne detectors will further open the window of low-frequency GW band where abundant sources exist and invaluable information…

General Relativity and Quantum Cosmology · Physics 2024-11-21 Rui Niu , Wen Zhao

Supermassive black hole binaries are promising sources of low-frequency gravitational waves (GWs) and bright electromagnetic emission. Pulsar timing array searches for resolved binaries are complex and computationally expensive and so far…

General Relativity and Quantum Cosmology · Physics 2023-04-11 Maria Charisi , Stephen R. Taylor , Caitlin A. Witt , Jessie Runnoe

Space-based gravitational wave (GW) detectors will open the millihertz band to survey ultra-compact binaries (UCBs). \textit{Verification binaries} (VBs) is a key to verifying the performance of space-based GW detectors because its…

General Relativity and Quantum Cosmology · Physics 2026-03-03 Zi-Heng Yu , Sen Yang , Liangliang Ren , Shun-Jia Huang

The advent of gravitational wave astronomy provides new proving grounds for testing theories of gravity. Recent work has reinvigorated the study of bimetric theories of gravity and massive gravity theories. One of the most interesting…

General Relativity and Quantum Cosmology · Physics 2014-11-14 Jeffrey S. Hazboun , Manuel Pichardo Marcano , Shane L. Larson

We investigate the formation and evolution of Ultra-Compact X-ray Binaries (UCXBs) using the COMPAS binary evolution code, starting from the Zero Age Main Sequence (ZAMS). Focusing on the low-mass MS companion channel, we simulate…

High Energy Astrophysical Phenomena · Physics 2025-02-18 Minghua Chen , Jinzhong liu

We propose a new method to detect gravitational waves, based on spatial coherence interferometry with stellar light, as opposed to the conventional temporal coherence interferometry with laser sources. The proposed method detects…

High Energy Astrophysical Phenomena · Physics 2021-11-09 I. H. Park , K. -Y. Choi , J. Hwang , S. Jung , D. H. Kim , M. H. Kim , C. -H. Lee , K. H. Lee , S. H. Oh , M. -G. Park , S. C. Park , A. Pozanenko , C. D. Rho , N. Vedenkin , E. Won

The mass transfer process is prevalent during the inspiral phase of compact binary systems. Our study focuses on systems comprising low-mass white dwarfs, particularly in neutron star-white dwarf binaries and double white dwarf binaries,…

General Relativity and Quantum Cosmology · Physics 2025-02-28 Zi-Han Zhang , Tan Liu , Shenghua Yu , Zong-Kuan Guo

We discuss the coherent search strategy to detect gravitational waves from inspiraling compact binaries by a network of correlated laser interferometric detectors. From the maximum likelihood ratio statistic, we obtain a coherent statistic…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Hideyuki Tagoshi , Himan Mukhopadhyay , Sanjeev Dhurandhar , Norichika Sago , Hirotaka Takahashi , Nobuyuki Kanda

We review the properties of Galactic binaries containing two compact objects, as derived by means of population synthesis. Using this information we calculate the gravitational wave signal of these binaries. At frequencies below f ~< 2 mHz…

Astrophysics · Physics 2011-03-28 G. Nelemans , L. R. Yungelson , S. F. Portegies Zwart