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We present a high-power continuous-wave (CW) lunar laser ranging (LLR) technique that has the potential to significantly improve Earth--Moon distance measurements. Using a 1 kW CW laser at 1064 nm and a 1 m-aperture telescope as an example,…

天体物理仪器与方法 · 物理学 2025-07-01 Slava G. Turyshev

Based on new developments in the understanding of supernovae (SNe) as gravitational-wave (GW) sources we estimate the GW background from all cosmic SNe. For a broad range of frequencies around 1 Hz, this background is crudely comparable to…

天体物理学 · 物理学 2009-11-10 Alessandra Buonanno , Guenter Sigl , Georg G. Raffelt , Hans-Thomas Janka , Ewald Mueller

Searches for primordial gravitational waves have resulted in constraints in a large frequency range from a variety of sources. The standard Cosmic Microwave Background (CMB) technique is to parameterise the tensor power spectrum in terms of…

宇宙学与河外天体物理 · 物理学 2020-10-14 Thomas J. Clarke , Edmund J. Copeland , Adam Moss

Pulsar timing arrays recently found evidence for a gravitational wave background (GWB), likely the stochastic overlap of GWs from many supermassive black hole binaries. Anticipating a continuous gravitational wave (CW) detection from a…

宇宙学与河外天体物理 · 物理学 2025-08-08 Emiko C. Gardiner , Bence Bécsy , Luke Zoltan Kelley , Neil J. Cornish

Stochastic gravitational waves (GWs) consist of a primordial component from early Universe processes and an astrophysical component from compact binary mergers. To detect the primordial stochastic GW background (SGWB), the astrophysical…

广义相对论与量子宇宙学 · 物理学 2025-01-08 Mingzheng Li , Jiming Yu , Zhen Pan

The stochastic gravitational wave background (SGWB) is conventionally treated as a passive relic of its astrophysical and cosmological sources, with negligible back-reaction on the matter content of the Universe. Here we show that this…

宇宙学与河外天体物理 · 物理学 2026-04-10 Manjia Liang , Peng Xu , Ruijun Shi , Zhoujian Cao , Ziren Luo , Minghui Du , Qiong Deng , Bo Liang , Jiaxiang Liang

Advanced LIGO and Advanced Virgo have recently published the upper limit measurement of persistent directional stochastic gravitational wave background (SGWB) based on data from their first and second observing runs (O1 and O2). In this…

宇宙学与河外天体物理 · 物理学 2020-12-08 Kate Ziyan Yang , Vuk Mandic , Claudia Scarlata , Sharan Banagiri

We discuss the sensitivity to anisotropies of stochastic gravitational-wave backgrounds (GWBs) observed via space-based interferometer. In addition to the unresolved galactic binaries as the most promising GWB source of the planned Laser…

广义相对论与量子宇宙学 · 物理学 2009-11-10 Hideaki Kudoh , Atsushi Taruya

A method is suggested to explore the gravitational wave background (GWB) in the frequency range from $10^{-12}$ to \hbox{$10^{-8}$ Hz}. That method is based on the precise measurements of pulsars' rotational parameters: the influence of the…

天体物理仪器与方法 · 物理学 2009-10-08 M. S. Pshirkov

The next generation of space- and ground-based facilities promise to reveal an entirely new picture of the gravitational wave sky: thousands of galactic and extragalactic binary signals, as well as stochastic gravitational wave backgrounds…

广义相对论与量子宇宙学 · 物理学 2024-07-03 James Alvey , Uddipta Bhardwaj , Valerie Domcke , Mauro Pieroni , Christoph Weniger

Recent observations of gravitational waves from binary black holes and neutron stars allow us to probe the strong and dynamical field regime of gravity. On the other hand, a collective signal from many individual, unresolved sources results…

广义相对论与量子宇宙学 · 物理学 2021-10-08 Alexander Saffer , Kent Yagi

Gravitational Waves (GWs) from the early universe and unresolved astrophysical sources are expected to create a stochastic GW background (SGWB). The GW radiometer algorithm is well suited to probe such a background using data from ground…

广义相对论与量子宇宙学 · 物理学 2015-09-23 Anirban Ain , Prathamesh Dalvi , Sanjit Mitra

A valuable target for advanced gravitational-wave detectors is the stochastic gravitational-wave background. The stochastic background imparts a weak correlated signal into networks of gravitational-wave detectors, and so standard searches…

高能天体物理现象 · 物理学 2018-12-26 Thomas Callister , Michael Coughlin , Jonah Kanner

As ground-based gravitational-wave (GW) detectors improve in sensitivity, gravitational-wave background (GWB) signals will progressively become detectable. Currently, searches for the GWB model the signal as a power law; however, deviations…

广义相对论与量子宇宙学 · 物理学 2025-12-09 Taylor Knapp , Patrick M. Meyers , Arianna I. Renzini

We employ the formalism developed in \cite{Mentasti:2023gmg} and \cite{Bartolo_2022} to study the prospect of detecting an anisotropic Stochastic Gravitational Wave Background (SGWB) with the Laser Interferometer Space Antenna (LISA) alone,…

广义相对论与量子宇宙学 · 物理学 2024-02-13 Giorgio Mentasti , Carlo R. Contaldi , Marco Peloso

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…

星系天体物理 · 物理学 2023-02-15 Federico Pozzoli , Stanislav Babak , Alberto Sesana , Matteo Bonetti , Nikolaos Karnesis

In this work we study the power spectrum of the Stochastic Gravitational Wave Background produced by standard and biased domain wall networks, using the Velocity-dependent One-Scale model to compute the cosmological evolution of their…

广义相对论与量子宇宙学 · 物理学 2024-03-18 D. Grüber , L. Sousa , P. P. Avelino

We investigate how the propagation of an astrophysical gravitational wave background (AGWB) is modified over cosmological volumes when considering theories beyond general relativity of the type Horndeski gravity. We first deduce an…

广义相对论与量子宇宙学 · 物理学 2020-08-05 Rafael C. Nunes

An enormous number of compact binary systems, spanning from stellar to supermassive levels, emit substantial gravitational waves during their final evolutionary stages, thereby creating a stochastic gravitational wave background (SGWB). We…

广义相对论与量子宇宙学 · 物理学 2023-12-05 Zhencheng Li , Zhen Jiang , Xi-Long Fan , Yun Chen , Liang Gao , Qi Guo , Shenghua Yu

We revisit the possibility that the stochastic common-spectrum process recently detected by the NANOGrav pulsar timing array experiment could be due to primordial gravitational waves (GWs). A na\"{i}ve extrapolation down to interferometer…

宇宙学与河外天体物理 · 物理学 2022-02-14 Micol Benetti , Leila Lobato Graef , Sunny Vagnozzi