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GW170817: Measurements of Neutron Star Radii and Equation of State

2018

On 17 August 2017, the LIGO and Virgo observatories made the first direct detection of gravitational waves from the coalescence of a neutron star binary system. The detection of this gravitational-wave signal, GW170817, offers a novel opportunity to directly probe the properties of matter at the extreme conditions found in the interior of these stars. The initial, minimal-assumption analysis of the LIGO and Virgo data placed constraints on the tidal effects of the coalescing bodies, which were then translated to constraints on neutron star radii. Here, we expand upon previous analyses by working under the hypothesis that both bodies were neutron stars that are described by the same equation…

Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaftenneutron star: binaryAstronomyGeneral Physics and AstronomyAstrophysics01 natural sciencesGeneral Relativity and Quantum CosmologyGRAVITATIONAL-WAVESGW170817BINARIESddc:550DENSELIGODENSE MATTEREquation of State010303 astronomy & astrophysicsQCQBHigh Energy Astrophysical Phenomena (astro-ph.HE)astro-ph.HEPhysicsNeutron Star RadiusPhysicsGravitational effectsEquations of stateParametrizationsElectromagnetic observationsGravitational-wave signals3. Good healthQUADRUPOLE-MOMENTSMacroscopic propertiesPhysical Sciences[PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc]Gravitational wave sourceAstrophysics::Earth and Planetary AstrophysicsAstrophysics - High Energy Astrophysical PhenomenaEquations of state of nuclear matterGravitational wavesaturation: densityBinary neutron starsNUCLEON MATTEREquations of state of nuclear matter; Gravitational wave sources; Gravitational waves; Nuclear matter in neutron starsGeneral relativitygr-qcAstrophysics::High Energy Astrophysical PhenomenaGW170817 Neutron Star Radius Equation of StatePhysics Multidisciplinaryneutron star: spinFOS: Physical sciencesGeneral Relativity and Quantum Cosmology (gr-qc)Astrophysics::Cosmology and Extragalactic AstrophysicsGravity wavesgravitational radiation: direct detectionGravitation and AstrophysicsNuclear matter in neutron starsGravitational waveselectromagnetic field: productionPhysics and Astronomy (all)Pulsargalaxy: binary0103 physical sciencesddc:530NeutronMASSESSTFCequation of state: parametrizationAstrophysics::Galaxy AstrophysicsNeutronsExtreme conditionsGravitational wave sourcesEquation of stateScience & TechnologyNeutron Star Interior Composition Explorer010308 nuclear & particles physicsGravitational wavegravitational radiationRCUKFlocculationSaturation densityUNIVERSAL RELATIONSStarsLIGOgravitational radiation detectorNeutron starStarsVIRGOPhysics and Astronomygravitational radiation: emissionneutron star: binary: coalescenceDewey Decimal Classification::500 | Naturwissenschaften::530 | Physik[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]MATTER
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