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We use direct numerical simulations of decaying primordial hydromagnetic turbulence with helicity to compute the resulting gravitational wave (GW) production and its degree of circular polarization. We find a clear dependence of the…

广义相对论与量子宇宙学 · 物理学 2022-04-20 Alberto Roper Pol , Sayan Mandal , Axel Brandenburg , Tina Kahniashvili

This review is focused on tests of Einstein's theory of general relativity with gravitational waves that are detectable by ground-based interferometers and pulsar-timing experiments. Einstein's theory has been greatly constrained in the…

广义相对论与量子宇宙学 · 物理学 2024-08-13 Nicolas Yunes , Xavier Siemens , Kent Yagi

We lay a theoretical foundation in the observation of gravitational waves (GWs) by electromagnetic waves (EMWs) performing a full electromagnetic analysis without any optical approximation. For that, the perturbation of plane EMWs is…

广义相对论与量子宇宙学 · 物理学 2022-11-22 Chan Park

Gravitational waves, although generally associated with extremely microscopic effects, can displace by hundreds of kilometers the pulsar interstellar scintillation patterns that bathe the Earth. The combination of the pulsar and the…

天体物理学 · 物理学 2008-02-03 Redouane Fakir

Rapidly rotating Neutron Stars (NSs) in Low Mass X-ray Binaries (LMXBs) are thought to be interesting sources of Gravitational Waves (GWs) for current and next generation ground based detectors, such as Advanced LIGO and the Einstein…

太阳与恒星天体物理 · 物理学 2015-05-20 Brynmor Haskell , Maxim Priymak , Alessandro Patruno , Manuel Oppenoorth , Andrew Melatos , Paul Lasky

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

Based on the relationship between proper distance and coordinate distance, the geometrical phenomenon caused by the passing gravitational waves can not be observed locally. The electromagnetic wave equations in the background gravitational…

广义相对论与量子宇宙学 · 物理学 2018-11-13 Wenyu Wang , Yang Xu

Gravitational waves (GWs) emitted by binary sources are interesting signals for testing gravity on cosmological scales since they allow measurements of the luminosity distance. When followed by electromagnetic counterparts, in particular,…

宇宙学与河外天体物理 · 物理学 2023-05-17 Isabela S. Matos , Emilio Bellini , Maurício O. Calvão , Martin Kunz

In this paper we discuss a new strategy for the detection of gravitational radiation likely emitted by cosmological gamma ray burst. Robust and conservative estimates lead to the conclusion that the uncorrelated superimposition of bursts of…

天体物理学 · 物理学 2009-11-07 Giulio Auriemma

In this paper, we study the strong gravitational lensing of gravitational waves (GWs) from a statistical perspective, with particular focus on the high frequency GWs from stellar binary black hole coalescences. These are most promising…

宇宙学与河外天体物理 · 物理学 2018-03-21 Shun-Sheng Li , Shude Mao , Yuetong Zhao , Youjun Lu

Various alternative theories of gravity predict dipolar gravitational radiation in addition to quadrupolar radiation. We show that gravitational wave (GW) observations of inspiralling compact binaries can put interesting constraints on the…

广义相对论与量子宇宙学 · 物理学 2015-06-04 K. G. Arun

We present upper limits on the amplitude of gravitational waves from 28 isolated pulsars using data from the second science run of LIGO. The results are also expressed as a constraint on the pulsars' equatorial ellipticities. We discuss a…

广义相对论与量子宇宙学 · 物理学 2019-08-14 Matthew Pitkin

Data collected by the GEO600 and LIGO interferometric gravitational wave detectors during their first observational science run were searched for continuous gravitational waves from the pulsar J1939+2134 at twice its rotation frequency. Two…

广义相对论与量子宇宙学 · 物理学 2008-11-26 The LIGO Scientific Collaboration , B. Abbott

Abbreviated: We investigate the potential of detecting the gravitational wave from individual binary black hole systems using pulsar timing arrays (PTAs) and calculate the accuracy for determining the GW properties. This is done in a…

高能天体物理现象 · 物理学 2015-05-27 K. J. Lee , N. Wex , M. Kramer , B. W. Stappers , C. G. Bassa , G. H. Janssen , R. Karuppusamy , R. Smits

Gravitational Wave Astronomy is becoming a reality as Earth-based interferometric gravitational-wave detectors reach the design sensitivities and move towards advanced configurations that may lead to gravitational-wave detections in the…

天体物理学 · 物理学 2008-08-05 Carlos F. Sopuerta

Pulsar glitches are a potential source of gravitational waves for current and future interferometric gravitational wave detectors. Some pulsar glitch events were observed by radio and X-ray telescopes during the fifth LIGO science run. It…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Kazuhiro Hayama , Shantanu Desai , Soumya D. Mohanty , Malik Rakhmanov , Tiffany Summerscales , Sanichiro Yoshida

Detection of the gravitational waves excited during inflation as quantum mechanical fluctuations is a key test of inflation and crucial to learning about the specifics of the inflationary model. We discuss the potential of Cosmic Background…

天体物理学 · 物理学 2010-01-06 Michael S. Turner

Rapidly rotating white dwarfs in cataclysmic variable systems may be emitting gravitational radiation due to the recently discovered relativistic r-mode instability. Assuming that the four most rapidly rotating known systems are limited in…

广义相对论与量子宇宙学 · 物理学 2009-09-25 William A. Hiscock

The polarization vector (PV) of an electromagnetic wave (EW) will experience a rotation in a region of spacetime perturbed by gravitational waves (GWs). Based on this idea, Cruise's group has built an annular waveguide to detect GWs. We…

广义相对论与量子宇宙学 · 物理学 2015-05-13 M. L. Tong , Y. Zhang

We present a method of searching for, and parameterizing, signals from known radio pulsars in data from interferometric gravitational wave detectors. This method has been applied to data from the LIGO and GEO 600 detectors to set upper…

广义相对论与量子宇宙学 · 物理学 2013-05-29 Réjean J. Dupuis , Graham Woan