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We anticipate the first direct detections of gravitational waves (GWs) with Advanced LIGO and Virgo later this decade. Though this groundbreaking technical achievement will be its own reward, a still greater prize could be observations of…

Gravitational-wave black-hole spectroscopy provides a unique opportunity to test the strong-field regime of gravity and the nature of the final object formed in the aftermath of a merger. Here we investigate the prospects for black-hole…

General Relativity and Quantum Cosmology · Physics 2023-09-26 Swetha Bhagwat , Costantino Pacilio , Paolo Pani , Michela Mapelli

The gravitational wave (GW) interferometers LISA and ET are expected to be functional in the next decade(s), possibly around the same time. They will operate over different frequency ranges, with similar integrated sensitivities to the…

Cosmology and Nongalactic Astrophysics · Physics 2025-09-11 Alisha Marriott-Best , Debika Chowdhury , Anish Ghoshal , Gianmassimo Tasinato

LSST's wide-field of view and sensitivity will revolutionize studies of the transient sky by finding extraordinary numbers of new transients every night. The recent discovery of a kilonova counterpart to LIGO/Virgo's first detection of…

High Energy Astrophysical Phenomena · Physics 2019-02-15 Graham P. Smith , Andrew Robertson , Matteo Bianconi , Mathilde Jauzac

The recent breakthroughs regarding the detection of compact binary mergers via gravitational waves opened up a new window to the Universe. Gravitational-wave models have been essential to this success since they are necessary to infer the…

General Relativity and Quantum Cosmology · Physics 2025-05-15 Adrian Abac , Anna Puecher , Jonathan Gair , Tim Dietrich

Third-generation (3G) gravitational wave detectors, in particular Einstein Telescope (ET) and Cosmic Explorer (CE), will explore unprecedented cosmic volumes in search for compact binary mergers, providing us with tens of thousands of…

Cosmology and Nongalactic Astrophysics · Physics 2023-09-06 Niccolò Muttoni , Danny Laghi , Nicola Tamanini , Sylvain Marsat , David Izquierdo-Villalba

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…

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

In this work, we use the simulated gravitational wave (GW) standard siren data from the future observation of the Einstein Telescope (ET) to constrain various dark energy cosmological models, including the $\Lambda$CDM, $w$CDM, CPL,…

Cosmology and Nongalactic Astrophysics · Physics 2019-10-08 Jing-Fei Zhang , Ming Zhang , Shang-Jie Jin , Jing-Zhao Qi , Xin Zhang

[Abridged] We investigate the detectability of the gravitational stochastic background produced by cosmological sources in scenarios of structure formation. The model considers the coalescences of three kind of binary systems: double…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Oswaldo D. Miranda

In 2017, the LIGO and Virgo gravitational wave (GW) detectors, in conjunction with electromagnetic (EM) astronomers, observed the first GW multi-messenger astrophysical event, the binary neutron star (BNS) merger GW170817. This marked the…

High Energy Astrophysical Phenomena · Physics 2023-11-20 Geoffrey Mo , Rahul Jayaraman , Michael Fausnaugh , Erik Katsavounidis , George R. Ricker , Roland Vanderspek

Gravitational waves detected by advanced ground-based detectors have allowed studying the universe in a way which is fully complementary to electromagnetic observations. As more sources are detected, it will be possible to measure…

General Relativity and Quantum Cosmology · Physics 2018-07-25 Salvatore Vitale , Chris Whittle

Detection of higher order modes of gravitational waves in third-generation (3G) ground-based detectors such as Cosmic Explorer and Einstein Telescope is explored. Using the astrophysical population of binary black holes based on events…

General Relativity and Quantum Cosmology · Physics 2021-10-25 Divyajyoti , Preet Baxi , Chandra Kant Mishra , K. G. Arun

X-ray observations of some short gamma-ray bursts indicate that a long-lived neutron star can form as a remnant of a binary neutron star merger. We develop a gravitational-wave detection pipeline for a long-lived binary neutron star merger…

High Energy Astrophysical Phenomena · Physics 2018-08-21 Nikhil Sarin , Paul D. Lasky , Letizia Sammut , Greg Ashton

The first detection of a gravitational-wave signal of a coalescence of two black holes marked the beginning of the era of gravitational-wave astronomy, which opens exciting new possibilities in the fields of astronomy, astrophysics and…

General Relativity and Quantum Cosmology · Physics 2020-07-29 Stefan Grimm , Jan Harms

2015 will see the first observations of Advanced LIGO and the start of the gravitational-wave (GW) advanced-detector era. One of the most promising sources for ground-based GW detectors are binary neutron-star (BNS) coalescences. In order…

High Energy Astrophysical Phenomena · Physics 2016-06-06 C P L Berry , B Farr , W M Farr , C-J Haster , I Mandel , H Middleton , L P Singer , A L Urban , A Vecchio , S Vitale , K Cannon , P B Graff , C Hanna , S Mohapatra , C Pankow , L R Price , T Sidery , J Veitch

We present the results of the search for an astrophysical gravitational-wave stochastic background during the second Einstein Telescope mock data and science challenge. Assuming that the loudest sources can be detected individually and…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-19 T. Regimbau , D. Meacher , M Coughlin

Gravitational-wave sources can serve as standard sirens to probe cosmology by measuring their luminosity distance and redshift. Such standard sirens are also useful to probe theories beyond general relativity with a modified…

General Relativity and Quantum Cosmology · Physics 2021-06-30 Nan Jiang , Kent Yagi

Standard sirens are the gravitational wave (GW) analog of the astronomical standard candles, and can provide powerful information about the dynamics of the Universe. In this work, we simulate a catalog with 1000 standard siren events from…

General Relativity and Quantum Cosmology · Physics 2019-08-26 Rocco D'Agostino , Rafael C. Nunes