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We present a framework to quantify the clustering of gravitational wave (GW) transient sources and measure their spatial cross-correlation with the large-scale structure (LSS) of the universe using the $k$-nearest neighbour ($k$NN)…

宇宙学与河外天体物理 · 物理学 2024-04-03 Kaustubh Rajesh Gupta , Arka Banerjee

Gravitational waves (GWs) have rapidly become important cosmological probes since their first detection in 2015. As the number of detected events continues to rise, upcoming instruments like the Einstein Telescope (ET) and Cosmic Explorer…

宇宙学与河外天体物理 · 物理学 2024-12-03 Stefano Zazzera , José Fonseca , Tessa Baker , Chris Clarkson

While the third LIGO--Virgo gravitational-wave transient catalog includes 90 signals, it is believed that ${\cal O}(10^5)$ binary black holes merge somewhere in the Universe every year. Although these signals are too weak to be detected…

广义相对论与量子宇宙学 · 物理学 2025-06-18 Xiao-Xiao Kou , Muhammed Saleem , Vuk Mandic , Colm Talbot , Eric Thrane

The number of observed gravitational wave (GW) events is growing fast thanks to rapidly improving detector sensitivities. GWs from compact binary coalescences like Black Holes or Neutron Stars behave like standard sirens and can be used as…

宇宙学与河外天体物理 · 物理学 2025-10-17 Giona Sala , Alessandro Cuoco , Julien Lesgourgues , Kostantinos-Rafail Revis , Lorenzo Valbusa Dall'Armi , Santiago Casas

Are the stellar-mass merging binary black holes, recently detected by their gravitational wave signal, of stellar or primordial origin? Answering this question will have profound implications for our understanding of the Universe, including…

宇宙学与河外天体物理 · 物理学 2020-05-27 Giulio Scelfo , Nicola Bellomo , Alvise Raccanelli , Sabino Matarrese , Licia Verde

Massive black hole binary coalescences are prime targets for space-based gravitational wave (GW) observatories such as {\it LISA}. GW measurements can localize the position of a coalescing binary on the sky to an ellipse with a major axis…

天体物理学 · 物理学 2008-05-28 Ryan N. Lang , Scott A. Hughes

We investigate a possible method for determining the progenitors of black hole (BH) mergers observed via their gravitational wave (GW) signal. We argue that measurements of the cross-correlation of the GW events with overlapping galaxy…

宇宙学与河外天体物理 · 物理学 2016-07-27 Alvise Raccanelli , Ely D. Kovetz , Simeon Bird , Ilias Cholis , Julian B. Munoz

The galaxy catalog dark siren method aims to infer cosmological parameters from gravitational waves (GWs) without an electromagnetic counterpart by statistically marginalizing over possible host galaxies. The cross-correlation of GW sources…

宇宙学与河外天体物理 · 物理学 2026-04-20 April Qiu Cheng , Jonathan Gair

A small fraction of gravitational-wave (GW) signals from binary black holes (BBHs) will be gravitationally lensed by intervening galaxies and galaxy clusters. Strong lensing will produce multiple identical copies of the GW signal arriving…

广义相对论与量子宇宙学 · 物理学 2026-02-09 Koustav N. Maity , Souvik Jana , Tejaswi Venumadhav , Ankur Barsode , Parameswaran Ajith

Discovery of strongly-lensed gravitational wave (GW) sources will unveil binary compact objects at higher redshifts and lower intrinsic luminosities than is possible without lensing. Such systems will yield unprecedented constraints on the…

宇宙学与河外天体物理 · 物理学 2019-05-07 G. P. Smith , C. P. L. Berry , M. Bianconi , W. M. Farr , M. Jauzac , R. J. Massey , J. Richard , A. Robertson , K. Sharon , A. Vecchio , J. Veitch

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…

宇宙学与河外天体物理 · 物理学 2023-08-17 Souvik Jana , Shasvath J. Kapadia , Tejaswi Venumadhav , Parameswaran Ajith

Motivated by the preponderance of so-called "heavy black holes" in the binary black hole (BBH) gravitational wave (GW) detections to date, and the role that gravitational lensing continues to play in discovering new galaxy populations, we…

高能天体物理现象 · 物理学 2018-01-24 Graham P. Smith , Mathilde Jauzac , John Veitch , Will M. Farr , Richard Massey , Johan Richard

Multiband observations of coalescing stellar-mass black holes binaries could deliver valuable information on the formation of those sources and potential deviations from General Relativity. Some of these binaries might be first detected by…

广义相对论与量子宇宙学 · 物理学 2022-11-30 Alexandre Toubiana , Stanislav Babak , Sylvain Marsat , Sergei Ossokine

The growing number of binary black hole mergers detected through gravitational waves offers unprecedented insight into their underlying population, yet their astrophysical formation channels remain unresolved. We present a new method to…

广义相对论与量子宇宙学 · 物理学 2025-10-23 William J. Smith , Krystal Ruiz-Rocha , Kelly Holley-Bockelmann , Michela Mapelli , Karan Jani

Merging compact binaries are the most viable and best studied candidates for gravitational wave (GW) detection by the fully operational network of ground-based observatories. In anticipation of the first detections, the expected…

高能天体物理现象 · 物理学 2015-05-20 Luke Zoltan Kelley , Enrico Ramirez-Ruiz , Marcel Zemp , Jürg Diemand , Ilya Mandel

We estimate the stochastic gravitational wave (GW) background signal from the field population of coalescing binary stellar mass black holes (BHs) throughout the Universe. This study is motivated by recent observations of BH-Wolf-Rayet star…

广义相对论与量子宇宙学 · 物理学 2011-09-15 Xing-Jiang Zhu , Eric Howell , Tania Regimbau , David Blair , Zong-Hong Zhu

Coalescing neutron-star-black-hole (NS-BH) binaries are a promising source of gravitational-wave (GW) signals detectable with large-scale laser interferometers such as Advanced LIGO and Virgo. They are also one of the main short gamma-ray…

广义相对论与量子宇宙学 · 物理学 2014-07-25 Francesco Pannarale , Frank Ohme

The rapid development of gravitational wave astronomy provides the unique opportunity of exploring the dynamics of the Universe using clustering properties of coalescing binary black hole mergers. Gravitational wave data, along with…

宇宙学与河外天体物理 · 物理学 2023-12-04 Michele Bosi , Nicola Bellomo , Alvise Raccanelli

In the next decade, new astrophysical instruments will deliver the first large-scale maps of gravitational waves and radio sources. Therefore, it is timely to investigate the possibility to combine them to provide new and complementary ways…

宇宙学与河外天体物理 · 物理学 2017-07-19 Alvise Raccanelli

The improvements in the sensitivity of the gravitational wave (GW) network enable the detection of several large redshift GW sources by third-generation GW detectors. These advancements provide an independent method to probe the large-scale…

宇宙学与河外天体物理 · 物理学 2022-02-02 Xiaoyun Shao , Zhoujian Cao , Xilong Fan , Shichao Wu
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