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Related papers: Gravitational-Wave Background from Extragalactic D…

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We present the successful recovery of common envelope ejection efficiency assumed in a simulated population of double white dwarf binaries like those which may be observed by the future LISA mission. We simulate the formation of double…

General Relativity and Quantum Cosmology · Physics 2025-01-27 Vera Delfavero , Katelyn Breivik , Sarah Thiele , Richard O'Shaughnessy , John G. Baker

Future gravitational wave detectors, such as the Laser Interferometer Space Antenna (\textit{LISA}), will be able to resolve a significant number of the ultra compact stellar-mass binaries in our own Galaxy and its neighborhood. These will…

Astrophysics of Galaxies · Physics 2022-12-21 Maria Georgousi , Nikolaos Karnesis , Valeriya Korol , Mauro Pieroni , Nikolaos Stergioulas

Pulsar timing arrays have found evidence for a low-frequency gravitational wave background (GWB). Assuming the GWB is produced by supermassive black hole binaries (SMBHBs), the next gravitational wave (GW) signals astronomers anticipate are…

High Energy Astrophysical Phenomena · Physics 2024-04-24 Emiko C. Gardiner , Luke Zoltan Kelley , Anna-Malin Lemke , Andrea Mitridate

Pulsar timing arrays' hint for a stochastic gravitational-wave background (SGWB) leverages the expectations of a future detection in the millihertz band, particularly with the LISA space mission. However, finding an SGWB with a single…

General Relativity and Quantum Cosmology · Physics 2026-02-12 Nikolaos Karnesis , Quentin Baghi , Jean-Baptiste Bayle , Nikiforos Galanis

Current gravitational wave detectors are sensitive to coalescing black holes and neutron stars. However, double white dwarfs (DWDs) have long been recognized as promising sources of gravitational waves, and upcoming detectors like LISA will…

The Stochastic Gravitational Wave Background (SGWB) is expected to be a key observable for Gravitational Wave (GW) interferometry. Its detection will open a new window on early universe cosmology and on the astrophysics of compact objects.…

Cosmology and Nongalactic Astrophysics · Physics 2019-12-11 N. Bartolo , D. Bertacca , S. Matarrese , M. Peloso , A. Ricciardone , A. Riotto , G. Tasinato

We use a population synthesis approach to characterise, as a function of cosmic time, the extragalactic close binary population descended from stars of low to intermediate initial mass. The unresolved gravitational wave (GW) background due…

Astrophysics · Physics 2008-11-26 Alison J. Farmer , E. S. Phinney

The nature of the gravitational wave background (GWB) is a key question in modern astrophysics and cosmology, with significant implications for understanding of the structure and evolution of the Universe. We demonstrate how…

With pulsar timing arrays (PTAs) having observed a gravitational wave background (GWB) at nanohertz frequencies, the focus of the field is shifting towards determining and characterizing its origin. While the primary candidate is a…

Instrumentation and Methods for Astrophysics · Physics 2025-09-10 Kyle A. Gersbach , Stephen R. Taylor , Bence Bécsy , Anna-Malin Lemke , Andrea Mitridate , Nihan Pol

The Lunar Gravitational Wave Antenna (LGWA) is a proposed gravitational-wave detector that will observe in the decihertz (dHz) frequency region. In this band, binary white dwarf systems are expected to merge, emitting gravitational waves.…

General Relativity and Quantum Cosmology · Physics 2026-04-22 Giovanni Benetti , Marica Branchesi , Jan Harms , Jean-Pierre Zendri

A future detection of the Stochastic Gravitational Wave Background (SGWB) with GW experiments is expected to open a new window on early universe cosmology and on the astrophysics of compact objects. In this paper we study SGWB anisotropies,…

Cosmology and Nongalactic Astrophysics · Physics 2020-07-22 N. Bartolo , D. Bertacca , S. Matarrese , M. Peloso , A. Ricciardone , A. Riotto , G. Tasinato

Galactic white dwarf binaries (WDBs) and black hole binaries (BHBs) will be gravitational wave (GW) sources for LISA. Their detection will provide insights into binary evolution and the evolution of our Galaxy through cosmic history. Here,…

Astrophysics of Galaxies · Physics 2024-10-24 Petra Tang , Jan Eldridge , Renate Meyer , Astrid Lamberts , Guillaume Boileau , Wouter van Zeist

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

Resolving individual gravitational waves from tens of millions of double white dwarf (DWD) binaries in the Milky Way is a challenge for future space-based gravitational wave detection programs. By using previous data to define the priors…

High Energy Astrophysical Phenomena · Physics 2023-09-13 Pin Gao , Xi-Long Fan , Zhou-Jian Cao , Xue-Hao Zhang

LISA (Laser Interferometer Space Antenna) is a proposed space mission, which will use coherent laser beams exchanged between three remote spacecraft to detect and study low-frequency cosmic gravitational radiation. In the low-part of its…

General Relativity and Quantum Cosmology · Physics 2014-11-17 Jeffrey A. Edlund , Massimo Tinto , Andrzej Krolak , Gijs Nelemans

The existence of a primordial stochastic gravitational wave background (SGWB) is a common prediction in various models of the early Universe. Despite constraints at different frequency ranges and claims of detection in the nHz range by…

Cosmology and Nongalactic Astrophysics · Physics 2024-09-24 Matteo Braglia , Mauro Pieroni , Sylvain Marsat

We use population synthesis modelling to predict the gravitational wave (GW) signal that the Laser Interferometer Space Antenna (LISA) will detect from the Galactic population of compact binary systems. We implement a realistic star…

High Energy Astrophysical Phenomena · Physics 2026-02-13 Jake McMillan , Adam Ingram , Cordelia Dashwood Brown , Andrei Igoshev , Matthew Middleton , Grzegorz Wiktorowicz , Simone Scaringi

We introduce a new method designed for Bayesian inference of the angular power spectrum of the Gravitational Wave Background (GWB) anisotropy. This scheme works with time-series data and can optionally incorporate the cross-correlations…

Cosmology and Nongalactic Astrophysics · Physics 2025-08-19 Chi Tian , Ran Ding , Xiao-Xiao Kou

Many recent works have shown that the angular resolution of ground-based detectors is too poor to characterize the anisotropies of the stochastic gravitational-wave background (SGWB). For this reason, we asked ourselves if a constellation…

General Relativity and Quantum Cosmology · Physics 2023-01-31 Giulia Capurri , Andrea Lapi , Lumen Boco , Carlo Baccigalupi

Future space-based gravitational wave (GW) observatories such as LISA will detect massive black hole binaries (MBHBs), which are expected to be accompanied by electromagnetic counterparts, thereby providing bright standard sirens for…

Instrumentation and Methods for Astrophysics · Physics 2026-03-06 Jia-Hao Zhong , Jin-Zhao Yang , Tao Yang , Xu-Heng Ding , Xi-Long Fan , Kai Liao , Bei You