0000000000407940

AUTHOR

Héctor Estellés

showing 3 related works from this author

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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GW190521: A Binary Black Hole Merger with a Total Mass of 150  M⊙

2020

LIGO Scientific Collaboration and Virgo Collaboration: et al.

AstronomyGeneral Physics and Astronomydetector: networkAstrophysicsGravitational waves; Binary black holes Intermediate mass black holes01 natural sciencesGeneral Relativity and Quantum Cosmologygravitational waves; black holesGW190521 BBHIntermediate mass black holesLIGO10. No inequalityQCQBSettore FIS/01astro-ph.HEHigh Energy Astrophysical Phenomena (astro-ph.HE)PhysicsPAIR-INSTABILITYSettore FIS/05Physicsstatistical analysis: BayesianSupernovaPhysical SciencesPhysique des particules élémentaires[PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc]Astrophysics - High Energy Astrophysical PhenomenaGravitational wavedata analysis methodBinary black holes Intermediate mass black holesgr-qcPhysics MultidisciplinaryFOS: Physical sciencesGeneral Relativity and Quantum Cosmology (gr-qc)Physics and Astronomy(all)Gravitation and AstrophysicsGravitational wavespair-instabilitySettore FIS/05 - Astronomia e AstrofisicaBinary black holeBinary black holesNeutron starsgravitational wavessupernova0103 physical sciences010306 general physicsLuminosity distanceSTFCGW190521Science & Technology9. Industry and infrastructureGravitational wavegravitational radiationRCUKblack hole: massgravitational waves black holegravitational radiation detectorLIGORedshiftBlack holewave: modelVIRGOblack hole: binaryIntermediate-mass black holegravitational radiation: emissionBBH[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
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Constraining the p -Mode– g -Mode Tidal Instability with GW170817

2019

We analyze the impact of a proposed tidal instability coupling p modes and g modes within neutron stars on GW170817. This nonresonant instability transfers energy from the orbit of the binary to internal modes of the stars, accelerating the gravitational-wave driven inspiral. We model the impact of this instability on the phasing of the gravitational wave signal using three parameters per star: An overall amplitude, a saturation frequency, and a spectral index. Incorporating these additional parameters, we compute the Bayes factor (lnB!pgpg) comparing our p-g model to a standard one. We find that the observed signal is consistent with waveform models that neglect p-g effects, with lnB!pgpg=…

Physics010308 nuclear & particles physicsGravitational waveGeneral Physics and AstronomyBreaking wave7. Clean energy01 natural sciencesInstabilityComputational physicsNeutron starStarsAmplitude13. Climate action0103 physical sciencesWaveformExtreme value theory010303 astronomy & astrophysicsPhysical Review Letters
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