The stochastic gravitational-wave background in the absence of horizons
Sign Up to like & getrecommendations! Published in 2018 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/aae1de
Abstract: Gravitational-wave astronomy has the potential to explore one of the deepest and most puzzling aspects of Einstein's theory: the existence of black holes. A plethora of ultracompact, horizonless objects have been proposed to arise in… read more here.
Keywords: black holes; gravitational wave; wave; stochastic gravitational ... See more keywords
Measuring the net circular polarization of the stochastic gravitational wave background with interferometers
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2020/05/028
Abstract: Parity violating interactions in the early Universe can source a stochastic gravitational wave background (SGWB) with a net circular polarization. In this paper, we study possible ways to search for circular polarization of the SGWB… read more here.
Keywords: gravitational wave; polarization; circular polarization; stochastic gravitational ... See more keywords
Probing primordial features with the stochastic gravitational wave background
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2021/03/005
Abstract: The stochastic gravitational wave background (SGWB) offers a new opportunity to observe signals of primordial features from inflationary models. We study their detectability with future space-based gravitational waves experiments, focusing our analysis on the frequency… read more here.
Keywords: stochastic gravitational; primordial features; wave background; gravitational wave ... See more keywords
Measuring parity violation in the Stochastic Gravitational Wave Background with the LISA-Taiji network
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2021/03/069
Abstract: Parity violation is a powerful observable to distinguish a cosmological background of Gravitational Waves (GWs) from an astrophysical one. Planar single GW interferometers, both on ground and in space, are unable to measure the net… read more here.
Keywords: parity violation; gravitational wave; stochastic gravitational; background ... See more keywords
Stochastic gravitational wave background mapmaking using regularized deconvolution
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.100.043541
Abstract: Obtaining a faithful source intensity distribution map of the sky from noisy data demands incorporating known information of the expected signal, especially when the signal is weak compared to the noise. We introduce a widely… read more here.
Keywords: gravitational wave; wave background; background; stochastic gravitational ... See more keywords
Estimating the angular power spectrum of the gravitational-wave background in the presence of shot noise
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.100.083501
Abstract: There has been much recent interest in studying anisotropies in the astrophysical gravitational-wave (GW) background, as these could provide us with interesting new information about galaxy clustering and large-scale structure. However, this information is obscured… read more here.
Keywords: gravitational wave; wave background; estimating angular; noise ... See more keywords
Searching for modified gravity in the astrophysical gravitational wave background: Application to ground-based interferometers
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.102.024071
Abstract: 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 amplitude correction on… read more here.
Keywords: gravitational wave; ground based; wave background; astrophysical gravitational ... See more keywords
Universal infrared scaling of gravitational wave background spectra
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.102.083528
Abstract: We study the general infrared behavior of the power spectrum of a stochastic gravitational wave background produced by stress tensor in the form bilinear in certain dynamical degrees of freedom. We find $\Omega_{\text{GW}}\propto k^3$ for… read more here.
Keywords: infrared scaling; gravitational wave; wave background; universal infrared ... See more keywords
Overlap reduction functions for a polarized stochastic gravitational-wave background in the Einstein Telescope-Cosmic Explorer and the LISA-Taiji networks
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review D"
DOI: 10.1103/physrevd.107.104040
Abstract: The detection of gravitational waves from the coalescences of binary compact stars by current interferometry experiments has opened up a new era of gravitational-wave astrophysics and cosmology. The search for a stochastic gravitational-wave background is… read more here.
Keywords: stochastic gravitational; reduction functions; wave background; gravitational wave ... See more keywords
Anisotropies in the gravitational wave background as a probe of the cosmic string network
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review D"
DOI: 10.1103/physrevd.95.043531
Abstract: Pulsar timing arrays are one of the powerful tools to test the existence of cosmic strings through searching for the gravitational wave background. The amplitude of the background connects to information on cosmic strings such… read more here.
Keywords: anisotropies gravitational; gravitational wave; string network; cosmic strings ... See more keywords
Scalar stochastic gravitational-wave background in Brans-Dicke theory of gravity
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.99.044057
Abstract: We study the scalar stochastic gravitational-wave background (SGWB) from astrophysical sources, including compact binary mergers and stellar collapses, in the Bras-Dicke theory of gravity. By contrast to tensor waves, we found the scalar SGWB to… read more here.
Keywords: gravitational wave; wave background; dicke theory; stochastic gravitational ... See more keywords