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In the third-generation (3G) gravitational-wave (GW) detector era, GW multi-messenger observations for binary neutron star merger events can exert great impacts on exploring the cosmic expansion history. Extending the previous work, we…

Cosmology and Nongalactic Astrophysics · Physics 2026-01-09 Tao Han , Jing-Fei Zhang , Xin Zhang

Lensed gravitational wave (GW) events are expected to be powerful new probes of cosmology, contingent on redshift measurement by electromagnetic observations. Host galaxy identification is thus crucial but challenging due to poor…

Cosmology and Nongalactic Astrophysics · Physics 2025-10-15 Zhiwei Chen , Qingjuan Yu , Youjun Lu , Xiao Guo

We develop methods for investigating baryon acoustic oscillation (BAO) features in cosmological models with non-trivial (but slowly varying) averaged spatial curvature: models that are not necessarily flat, close to flat, nor with constant…

Cosmology and Nongalactic Astrophysics · Physics 2019-03-06 Asta Heinesen , Chris Blake , Yong-Zhuang Li , David L. Wiltshire

Information about the mass spectrum of compact stars can be used to infer cosmological parameters from gravitational waves (GW) in the absence of redshift measurements obtained from electromagnetic (EM) observations. This method will be…

General Relativity and Quantum Cosmology · Physics 2022-09-21 S. Mastrogiovanni , K. Leyde , C. Karathanasis , E. Chassande-Mottin , D. A. Steer , J. Gair , A. Ghosh , R. Gray , S. Mukherjee , S. Rinaldi

Using the measurements of tidal deformation in the binary neutron star (BNS) coalescences can obtain the information of redshifts of gravitational wave (GW) sources, and thus actually the cosmic expansion history can be investigated using…

General Relativity and Quantum Cosmology · Physics 2023-08-31 Shang-Jie Jin , Tian-Nuo Li , Jing-Fei Zhang , Xin Zhang

The Baryon Acoustic Oscillations (BAOs) or baryon wiggles which are present in the galaxy power spectrum at scales 100-150Mpc/h are powerful features with which to constrain cosmology. The potential of these probes is such that these are…

We introduce a method to constrain general cosmological models using Baryon Acoustic Oscillation (BAO) distance measurements from galaxy samples covering different redshift ranges, and apply this method to analyse samples drawn from the…

We present a comprehensive forecast for cosmological constraints using the joint observation of the cosmic shear signal from the Chinese Space Station Survey Telescope (CSST) and the clustering signal from the next-generation gravitational…

Cosmology and Nongalactic Astrophysics · Physics 2026-02-24 Pengfei Su , Yan Gong , Qi Xiong , Dingao Hu , Hengjie Lin , Furen Deng , Xuelei Chen

The measurement of the scale of the baryon acoustic oscillations (BAO) in the galaxy power spectrum as a function of redshift is a promising method to constrain the equation-of-state parameter of the dark energy w. To measure the scale of…

Astrophysics · Physics 2009-06-23 Christian Wagner , Volker Müller , Matthias Steinmetz

The direct detection of gravitational waves by the LIGO-Virgo collaboration has opened a new window with which to measure cosmological parameters such as the Hubble constant $H_0$, and also probe general relativity on large scales. In this…

General Relativity and Quantum Cosmology · Physics 2020-08-14 S. Mastrogiovanni , D. Steer , M. Barsuglia

We analyse the large-scale correlation function of the 6dF Galaxy Survey (6dFGS) and detect a Baryon Acoustic Oscillation (BAO) signal. The 6dFGS BAO detection allows us to constrain the distance-redshift relation at z_{\rm eff} = 0.106. We…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 Florian Beutler , Chris Blake , Matthew Colless , D. Heath Jones , Lister Staveley-Smith , Lachlan Campbell , Quentin Parker , Will Saunders , Fred Watson

Gravitational-wave (GW) events are generally believed to originate in galaxies and can thus serve, like galaxies, as tracers of the universe's large-scale structure. In GW observations, waveform analysis provides direct measurements of…

Cosmology and Nongalactic Astrophysics · Physics 2026-04-16 Ya-Nan Du , Ji-Yu Song , Yichao Li , Shang-Jie Jin , Ling-Feng Wang , Jing-Fei Zhang , Xin Zhang

The detection of gravitational waves (GW) by the LIGO and Virgo collaborations offers a whole new range of possible tests and opens up a new window which may shed light on the nature of dark energy and dark matter. In the present work we…

Cosmology and Nongalactic Astrophysics · Physics 2019-08-28 Minghui Du , Weiqiang Yang , Lixin Xu , Supriya Pan , David F. Mota

The measurement of cosmological distances using baryon acoustic oscillations (BAO) is crucial for studying the universe's expansion. The Chinese Space Station Telescope (CSST) galaxy redshift survey, with its vast volume and sky coverage,…

We present the astrophysical science case for a space-based, decihertz gravitational-wave (GW) detector. We particularly highlight an ability to infer a source's sky location, both when combined with a network of ground-based detectors to…

General Relativity and Quantum Cosmology · Physics 2020-08-12 Kevin A. Kuns , Hang Yu , Yanbei Chen , Rana X Adhikari

We use higher-redshift gamma-ray burst (GRB), HII starburst galaxy (HIIG), and quasar angular size (QSO-AS) measurements to constrain six spatially flat and non-flat cosmological models. These three sets of cosmological constraints are…

Cosmology and Nongalactic Astrophysics · Physics 2021-01-15 Shulei Cao , Joseph Ryan , Narayan Khadka , Bharat Ratra

In this work we use a template method to extract the scale associated with the Baryon Acoustic Oscillation (BAO) signal in 21cm neutral hydrogen intensity maps. We then forecast the constraints on the standard deviations of cosmological…

Cosmology and Nongalactic Astrophysics · Physics 2025-10-10 Benjamin Ostergaard , André Alencar da Costa , Yu Sang

Spatial variations in survey properties due to selection effects generate substantial systematic errors in large-scale structure measurements in optical galaxy surveys on very large scales. On such scales, the statistical sensitivity of…

Cosmology and Nongalactic Astrophysics · Physics 2024-12-11 E. L. Gagnon , D. Anbajagane , J. Prat , C. Chang , J. Frieman

Third generation gravitational wave (GW) detectors are expected to detect millions of binary black hole (BBH) mergers during their operation period. A small fraction of them ($\sim 1\%$) will be strongly lensed by intervening galaxies and…

Cosmology and Nongalactic Astrophysics · Physics 2023-08-17 Souvik Jana , Shasvath J. Kapadia , Tejaswi Venumadhav , Parameswaran Ajith

The stochastic cosmological gravitational-wave background (CGWB) provides a direct window to study early universe phenomena and fundamental physics. With the proposed third-generation ground-based gravitational wave detectors, Einstein…

General Relativity and Quantum Cosmology · Physics 2020-09-16 Ashish Sharma , Jan Harms