Search results for "Tests of general relativity"

showing 6 items of 6 documents

Search for Tensor, Vector, and Scalar Polarizations in the Stochastic Gravitational-Wave Background

2018

The detection of gravitational waves with Advanced LIGO and Advanced Virgo has enabled novel tests of general relativity, including direct study of the polarization of gravitational waves. While general relativity allows for only two tensor gravitational-wave polarizations, general metric theories can additionally predict two vector and two scalar polarizations. The polarization of gravitational waves is encoded in the spectral shape of the stochastic gravitational-wave background, formed by the superposition of cosmological and individually-unresolved astrophysical sources. Using data recorded by Advanced LIGO during its first observing run, we search for a stochastic background of generic…

AstronomyTestingdetectionGeneral Physics and AstronomyEFFICIENTTESTING RELATIVISTIC GRAVITYTensorsSpectral shapes01 natural sciencesGeneral Relativity and Quantum CosmologyGravitational wave backgroundEnergy densityTOOLQCComputingMilieux_MISCELLANEOUSstochastic modelMathematical physicsQBPhysics[PHYS]Physics [physics]Stochastic systemsGravitational effectsarticleVectorsPolarization (waves)gravitational wavesastro-ph.CO[PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc]Astrophysics - Cosmology and Nongalactic AstrophysicsGeneral RelativityCosmology and Nongalactic Astrophysics (astro-ph.CO)General relativitygr-qcFOS: Physical sciencesexperimental studies of gravityGeneral Relativity and Quantum Cosmology (gr-qc)Gravity wavesRelativityReference frequencyPhysics and Astronomy (all)General Relativity and Quantum CosmologyTheory of relativityScalar modesTests of general relativity0103 physical sciencesAdvanced LIGOddc:530Tensor010306 general physicsSTFCGravitational Wavespolarization010308 nuclear & particles physicsGravitational waveRCUKAstrophysical sourcesLIGOPhysics and AstronomygravitationRADIATIONStochastic BackgroundDewey Decimal Classification::500 | Naturwissenschaften::530 | Physik[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]cosmologyGravitational Waves Stochastic Background Advanced LIGO
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Tests of General Relativity with GW170817

2019

The recent discovery by Advanced LIGO and Advanced Virgo of a gravitational wave signal from a binary neutron star inspiral has enabled tests of general relativity (GR) with this new type of source. This source, for the first time, permits tests of strong-field dynamics of compact binaries in presence of matter. In this paper, we place constraints on the dipole radiation and possible deviations from GR in the post-Newtonian coefficients that govern the inspiral regime. Bounds on modified dispersion of gravitational waves are obtained; in combination with information from the observed electromagnetic counterpart we can also constrain effects due to large extra dimensions. Finally, the polari…

Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaftenneutron star: binaryAstronomyTestingGravitational WaveGeneral Physics and AstronomyAstrophysics01 natural sciencesGeneral Relativity and Quantum Cosmologystrong fieldddc:550general relativityLIGOQCSettore FIS/01PhysicsPhysicsGravitational effectsarticlePolarization (waves)Gravitational-wave signalsExtra dimensionsgravitational wavesPhysical SciencesExtra dimensions[PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc]Large extra dimensiondispersionBinary neutron starsgravitational radiation: polarizationGeneral RelativityGeneral relativitygr-qcPhysics MultidisciplinaryGRAVITATIONAL-WAVE OBSERVATIONSFOS: Physical sciencesGeneral Relativity and Quantum Cosmology (gr-qc)gravitational wavesblack holesGravity wavesMASSgravitational radiation: direct detectionGravitation and Astrophysicselectromagnetic field: productionRelativityGeneral Relativity and Quantum CosmologyDipole radiationsGRAVITYTests of general relativitygravitation: weak field0103 physical sciencesddc:530High Energy Physicscapture010306 general physicsGravitational Wave; General RelativitySTFCradiation: dipolepolarizationScience & TechnologyStrong fieldGravitational wavegravitational radiationRCUKbinary: compactgravitational radiation detectorLIGONeutron starVIRGODewey Decimal Classification::500 | Naturwissenschaften::530 | PhysikNewtonianshigher-dimensional
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New horizons for fundamental physics with LISA

2022

K. G. Arun et al.

AstrofísicaPROTOPLANET MIGRATIONFísica-Modelos matemáticosPhysics and Astronomy (miscellaneous)gr-qcFOS: Physical sciencesGeneral Relativity and Quantum Cosmology (gr-qc)GRAVITATIONAL-WAVEShorizonFundamental physicGeneral Relativity and Quantum CosmologyPhysics Particles & FieldsGravitational wavesLIGO (Observatory)Tests of general relativitySettore FIS/05 - Astronomia e AstrofisicaDARK-MATTERFísica matemáticaKOZAI MECHANISMHigh Energy PhysicsGENERAL-RELATIVITYFundamental physics; Gravitational waves; LISA; Tests of general relativityFundamental physicsPRIMORDIAL BLACK-HOLESLISAScience & TechnologyGeneral Relativity and Cosmology83CXXPhysicsgravitation: interactiongravitational radiationFísicaCompactQUANTUM-GRAVITYPhysical SciencesAstronomia[PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc]fundamental physics; gravitational waves; LISA; test of general relativityMODIFIED GRAVITYtest of general relativityGravitational waveMULTIPOLE MOMENTSHUBBLE CONSTANT
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Testing effects of Lorentz invariance violation in the propagation of astroparticles with the Pierre Auger Observatory

2021

The successful installation, commissioning, and operation of the Pierre Auger Observatory would not have been possible without the strong commitment and effort from the technical and administrative staff in Malargüe. We are very grateful to the following agencies and organizations for financial support: Argentina — Comisión Nacional de Energía Atómica; Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Gobierno de la Provincia de Mendoza; Municipalidad de Malargüe; NDM Holdings and Valle Las Leñas; in gratitude for their continuing cooperation over land access; Australia — the Australian Research Council; Be…

interaction [cosmic radiation]mass spectrum [cosmic radiation]dispersion relationAstronomyAstrophysics::High Energy Astrophysical Phenomenaenergy spectrumcosmic ray experimentFOS: Physical sciencesultra high energy cosmic rayscosmic radiation: interactioninvariance: Lorentz01 natural sciences530UHEultra high energy cosmic rayenergy: thresholdFundamental physics gravitational waves LISA Tests of general relativityCosmic ray experiments0103 physical sciencespropagationddc:530physics of the early universeHigh Energy PhysicsLorentz [invariance]010303 astronomy & astrophysicsphoton: fluxflux [photon]Lorentz [violation]High Energy Astrophysical Phenomena (astro-ph.HE)astro-ph.HEenergy: high010308 nuclear & particles physicscosmic radiation: mass spectrumcosmic ray experiments; ultra high energy cosmic rays; physics of the early universeSettore FIS/01 - Fisica SperimentaleAstronomy and AstrophysicsASTROFÍSICAUltra-high energy cosmic raysthreshold [energy]violation: LorentzAugerobservatoryelectromagnetickinematicsExperimental High Energy Physicshigh [energy]cosmic ray experimentsAstrophysics - High Energy Astrophysical PhenomenaPhysics of the early universe
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Gravitational wave content and stability of uniformly, rotating, triaxial neutron stars in general relativity

2017

Targets for ground-based gravitational wave interferometers include continuous, quasiperiodic sources of gravitational radiation, such as isolated, spinning neutron stars. In this work we perform evolution simulations of uniformly rotating, triaxially deformed stars, the compressible analogues in general relativity of incompressible, Newtonian Jacobi ellipsoids. We investigate their stability and gravitational wave emission. We employ five models, both normal and supramassive, and track their evolution with different grid setups and resolutions, as well as with two different evolution codes. We find that all models are dynamically stable and produce a strain that is approximately one-tenth …

AstrofísicaPhysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)010308 nuclear & particles physicsGravitational waveGeneral relativityFOS: Physical sciencesGeneral Relativity and Quantum Cosmology (gr-qc)Compact star01 natural sciencesGeneral Relativity and Quantum CosmologyArticleGravitational energyNumerical relativityClassical mechanicsTests of general relativity0103 physical sciencesAstronomiaTwo-body problem in general relativityAstrophysics - High Energy Astrophysical Phenomena010303 astronomy & astrophysicsAstrophysics::Galaxy AstrophysicsGravitational redshift
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The relativity experiment of MORE: Global full-cycle simulation and results

2015

BepiColombo is a joint ESA/JAXA mission to Mercury with challenging objectives regarding geophysics, geodesy and fundamental physics. In particular, the Mercury Orbiter Radio science Experiment (MORE) intends, as one of its goals, to perform a test of General Relativity. This can be done by measuring and constraining the parametrized post-Newtonian (PPN) parameters to an accuracy significantly better than current one. In this work we perform a global numerical full-cycle simulation of the BepiColombo Radio Science Experiments (RSE) in a realistic scenario, focussing on the relativity experiment, solving simultaneously for all the parameters of interest for RSE in a global least squares fit …

Gravitational time dilationPhysicsGeneral RelativityGeneral relativityBepi-Colombo; General Relativity; Mercury; Radio Science; Aerospace Engineering; Civil and Structural Engineering; InstrumentationBepiColomboAerospace EngineeringMercuryRadio ScienceBepi-ColomboNumerical relativityTheory of relativityClassical mechanicsTests of general relativityTwo-body problem in general relativityStatistical physicsPreferred frameTests of special relativitySettore MAT/07 - Fisica MatematicaInstrumentationCivil and Structural Engineering
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