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The upcoming Laser Interferometer Space Antenna (LISA) will detect a large gravitational-wave foreground of Galactic white dwarf binaries. These sources are exceptional for their probable detection at electromagnetic wavelengths, some long…

Following the selection of The Gravitational Universe by ESA, and the successful flight of LISA Pathfinder, the LISA Consortium now proposes a 4 year mission in response to ESA's call for missions for L3. The observatory will be based on…

Gravitational waves (GWs) produced by sound waves in the primordial plasma during a strong first-order phase transition in the early Universe are going to be a main target of the upcoming Laser Interferometer Space Antenna (LISA)…

High Energy Physics - Phenomenology · Physics 2020-11-17 Kai Schmitz

The random superposition of many weak sources will produce a stochastic background of gravitational waves that may dominate the response of the LISA (Laser Interferometer Space Antenna) gravitational wave observatory. Unless something can…

General Relativity and Quantum Cosmology · Physics 2014-11-17 Neil J. Cornish

Extreme mass ratio inspirals (EMRIs) are among the primary targets for the Laser Interferometer Space Antenna (LISA). The extreme mass ratios of these systems result in relatively weak GW signals, that can be individually resolved only for…

Astrophysics of Galaxies · Physics 2023-02-15 Federico Pozzoli , Stanislav Babak , Alberto Sesana , Matteo Bonetti , Nikolaos Karnesis

The Laser Interferometer Space Antenna (LISA) is a planned space-based gravitational wave telescope with the goal of measuring gravitational waves in the milli-Hertz frequency band, which is dominated by millions of Galactic binaries. While…

Instrumentation and Methods for Astrophysics · Physics 2023-07-11 Stefan H. Strub , Luigi Ferraioli , Cédric Schmelzbach , Simon C. Stähler , Domenico Giardini

Future space-based gravitational-wave detectors such as TianQin, LISA, and Taiji are expected to conduct joint observations. Such a multi-detector network will provide complementary viewing angles for the anisotropic stochastic…

General Relativity and Quantum Cosmology · Physics 2025-10-31 Zhi-Yuan Li , Zheng-Cheng Liang , Cong-mao Zhang , Jian-dong Zhang , Yi-Ming Hu

The orbiting LISA instrument is designed to detect gravitational waves in the millihertz band, produced by sources including galactic binaries and extreme mass ratio inspirals, among others. The detector consists of three spacecraft, each…

General Relativity and Quantum Cosmology · Physics 2025-01-15 Orion Sauter , Peter Wass , Wiler Sanchez , Henri Inchauspé

The Laser Interferometer Space Antenna will be the first Gravitational Wave observatory in space. It is scheduled to fly in the early 2030's. LISA design predicts sensitivity levels that enable the detection a Stochastic Gravitational Wave…

Instrumentation and Methods for Astrophysics · Physics 2020-12-02 Nikolaos Karnesis , Marc Lilley , Antoine Petiteau

With the goal of attempting to observe a stochastic gravitational wave background (SGWB) with LISA, the spectral separability of the cosmological and astrophysical backgrounds is important to estimate. We attempt to determine the level with…

General Relativity and Quantum Cosmology · Physics 2021-10-08 Guillaume Boileau , Nelson Christensen , Renate Meyer , Neil J. Cornish

LISA is the upcoming space-based Gravitational Wave telescope. LISA Pathfinder, to be launched in the coming years, will prove and verify the detection principle of the fundamental Doppler link of LISA on a flight hardware identical in…

Data Analysis, Statistics and Probability · Physics 2015-03-25 G. Congedo , L. Ferraioli , M. Hueller , F. De Marchi , S. Vitale , M. Armano , M. Hewitson , M. Nofrarias

We apply state-of-the-art, likelihood-free statistical inference (machine-learning-based) techniques for reconstructing the spectral shape of a gravitational wave background (GWB). We focus on the reconstruction of an arbitrarily shaped…

Cosmology and Nongalactic Astrophysics · Physics 2024-12-09 Androniki Dimitriou , Daniel G. Figueroa , Bryan Zaldivar

The Laser Interferometer Space Antenna (LISA) is scheduled to launch in the mid 2030s, and is expected to observe gravitational-wave candidates from massive black-hole binary mergers, extreme mass-ratio inspirals, and more. Accurately…

Instrumentation and Methods for Astrophysics · Physics 2023-12-21 Charlie Hoy , Laura K. Nuttall

We investigate the capabilities of space-based gravitational-wave detector networks, specifically Taiji and LISA, to measure the anisotropies in stochastic gravitational-wave background (SGWB), which are characterized by the angular power…

General Relativity and Quantum Cosmology · Physics 2024-10-30 Zhi-Chao Zhao , Sai Wang

We extend the formalisms developed in Gair et al. and Cornish and van Haasteren to create maps of gravitational-wave backgrounds using a network of ground-based laser interferometers. We show that in contrast to pulsar timing arrays, which…

General Relativity and Quantum Cosmology · Physics 2015-08-20 Joseph D. Romano , Stephen R. Taylor , Neil J. Cornish , Jonathan Gair , Chiara M. F. Mingarelli , Rutger van Haasteren

The Laser Interferometer Space Antenna (LISA) gravitational-wave (GW) observatory will be limited in its ability to detect mergers of binary black holes (BBHs) in the stellar-mass range. A future ground-based detector network, meanwhile,…

High Energy Astrophysical Phenomena · Physics 2018-12-26 Kaze W. K. Wong , Ely D. Kovetz , Curt Cutler , Emanuele Berti

The multiple Doppler readouts available on the Laser Interferometer Space Antenna (LISA) permit simultaneous formation of several interferometric observables. All these observables are independent of laser frequency fluctuations and have…

General Relativity and Quantum Cosmology · Physics 2009-11-07 Thomas A. Prince , Massimo Tinto , Shane L. Larson , J. W. Armstrong

The planned Laser Interferometer Space Antenna (LISA) will detect gravitational wave signals from a wide range of sources. However, disentangling individual signals from the source-dominated data stream is a challenging problem and the…

General Relativity and Quantum Cosmology · Physics 2016-11-15 Jonathan R Gair , Gareth Jones

We present a perturbative reconstruction method to make a skymap of gravitational-wave backgrounds (GWBs) observed via space-based interferometer. In the presence of anisotropies in GWBs, the cross-correlated signals of observed GWBs are…

General Relativity and Quantum Cosmology · Physics 2009-11-11 Atsushi Taruya , Hideaki Kudoh