0000000000039577

AUTHOR

Chang-hwan Lee

showing 6 related works from this author

GW170817: Implications for the Stochastic Gravitational-Wave Background from Compact Binary Coalescences

2018

The LIGO Scientific and Virgo Collaborations have announced the first detection of gravitational waves from the coalescence of two neutron stars. The merger rate of binary neutron stars estimated from this event suggests that distant, unresolvable binary neutron stars create a significant astrophysical stochastic gravitational-wave background. The binary neutron star background will add to the background from binary black holes, increasing the amplitude of the total astrophysical background relative to previous expectations. In the Advanced LIGO-Virgo frequency band most sensitive to stochastic backgrounds (near 25 Hz), we predict a total astrophysical background with amplitude $\Omega_{\rm…

Design sensitivityneutron star: binarygravitational radiation: stochasticAstronomyX-ray binaryGeneral Physics and AstronomyAstrophysicsAstrophysics01 natural sciencesGeneral Relativity and Quantum CosmologylocalizationGravitational wave backgroundGravitational Waves Neutron Stars Stochastic Background Virgo LIGOblack holeLIGOstochastic modelQCQBPhysicsGAMMA-RAY BURSTSSignal to noise ratioStochastic systemsBlack holesGravitational effectsarticleAstrophysics::Instrumentation and Methods for AstrophysicsComputingMethodologies_DOCUMENTANDTEXTPROCESSING[PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc]Gravitational wave sources Experimental studies of gravity Gravitational WavesGravitationBinary neutron starsX-ray bursterBinsAstrophysics::High Energy Astrophysical PhenomenaMERGERSFOS: Physical sciencesGeneral Relativity and Quantum Cosmology (gr-qc)Astrophysics::Cosmology and Extragalactic AstrophysicsGravity wavesgravitational radiation: direct detectionBinary pulsarNeutron starsSTAR-FORMATIONPhysics and Astronomy (all)General Relativity and Quantum CosmologyBinary black holebinary: coalescence0103 physical sciencesFrequency bandsddc:530RATESINTERFEROMETERS010306 general physicsAstrophysics::Galaxy AstrophysicsNeutronsGravitational Waves010308 nuclear & particles physicsGravitational waveVirgogravitational radiation: backgroundgravitational radiationAstronomyNeutron Stars530 Physikbinary: compactsensitivityStarsLIGObackground: stochasticEVOLUTIONsignal noise ratioVIRGOPhysics and Astronomyblack hole: binarygravitational radiation: emissionStellar black holeStochastic BackgroundDewey Decimal Classification::500 | Naturwissenschaften::530 | PhysikHIGH-REDSHIFTneutron star: coalescencePhysical Review Letters
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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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All-sky search for long-duration gravitational wave transients in the first Advanced LIGO observing run

2018

Made available in DSpace on 2018-11-26T17:45:14Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-03-22 Australian Research Council Council of Scientific and Industrial Research of India Department of Science and Technology, India Science AMP; Engineering Research Board (SERB), India Ministry of Human Resource Development, India Spanish Agencia Estatal de Investigacion Vicepresidencia i Conselleria d'Innovacio, Recerca i Turisme Conselleria d'Educacio i Universitat del Govern de les Illes Balears Conselleria d'Educacio, Investigacio, Cultura i Esport de la Generalitat Valenciana National Science Centre of Poland Swiss National Science Foundation (SNSF) Russian Foundation for Basic Rese…

Physics and Astronomy (miscellaneous)Astrophysics::High Energy Astrophysical PhenomenaAstronomyFOS: Physical sciencesGeneral Relativity and Quantum Cosmology (gr-qc)AstrophysicsLIGO-VirgoMagnetar01 natural sciencesGeneral Relativity and Quantum CosmologyGravitational waves long transients LIGOGravitational wavesGeneral Relativity and Quantum CosmologyUPPER LIMITSSearch algorithmSIGNALS0103 physical sciencesWaveformlong transientsHigh Energy PhysicsLIGO010306 general physicsgravitational wave010303 astronomy & astrophysicsComputingMilieux_MISCELLANEOUSQCQBHigh Energy Astrophysical Phenomena (astro-ph.HE)PhysicsLIGO-Virgo; gravitational waves; long duration transient[PHYS]Physics [physics]Gravitational wavelong duration transientLIGOgravitational waves; LIGO-Virgo; long duration transient; Physics and Astronomy (miscellaneous)Black holeMODELNeutron starAmplitudegravitational wavesBLACK-HOLEComputingMethodologies_DOCUMENTANDTEXTPROCESSINGRADIATIONNEUTRINOAstrophysics - High Energy Astrophysical Phenomena[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
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GW190412: Observation of a binary-black-hole coalescence with asymmetric masses

2020

LIGO Scientific Collaboration and Virgo Collaboration: et al.

Physics and Astronomy (miscellaneous)AstronomyGravitational wave detection Gravitational wave sources Gravitational waves Astronomical black holesagn discsAstrophysicsdetector: network01 natural sciencesGeneral Relativity and Quantum CosmologyPhysics Particles & Fieldsstar-clustersgravitational waves black holesgravitational waves; black holesAGN DISCSgravitational waves; black holes; LIGO; Virgoblack holegeneral relativityLIGOgravitational waveQCQBPhysicsSettore FIS/01astro-ph.HEHigh Energy Astrophysical Phenomena (astro-ph.HE)GRAVITATIONAL WAVE-FORMSPROGENITORSCOMPACT BINARIESblack hole: spinPhysicsPERTURBATIONSgravitational wavesPhysical Sciences[PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc]Gravitational wave detectionAstrophysics - High Energy Astrophysical PhenomenaMETALLICITYmass: asymmetrymetallicitydata analysis methodGeneral relativityMERGERSgr-qcAstrophysics::High Energy Astrophysical PhenomenamultipolePREDICTIONSFOS: Physical sciencesgravitational wavesblack holesGeneral Relativity and Quantum Cosmology (gr-qc)Astronomy & Astrophysicsgravitational radiation: direct detectionGravitational wavesGeneral Relativity and Quantum CosmologyTheory of relativityBinary black holeSettore FIS/05 - Astronomia e AstrofisicaAstronomical black holesbinary: coalescence0103 physical sciencesnumerical methodsddc:530STAR-CLUSTERS010306 general physicsnumerical calculationsSTFCAstrophysiqueGravitational wave sourcesScience & Technologymass: solar010308 nuclear & particles physicsGravitational waveVirgogravitational radiationRCUKblack hole: massMass ratioblack holesLIGOEVOLUTIONgravitational radiation detectorBlack holedetector: sensitivityPhysics and Astronomyblack hole: binaryrelativity theorygravitational radiation: emissionmass ratioMultipole expansion[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]Astrophysics and astroparticle physics
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GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral

2017

On August 17, 2017 at 12-41:04 UTC the Advanced LIGO and Advanced Virgo gravitational-wave detectors made their first observation of a binary neutron star inspiral. The signal, GW170817, was detected with a combined signal-to-noise ratio of 32.4 and a false-alarm-rate estimate of less than one per 8.0×104 years. We infer the component masses of the binary to be between 0.86 and 2.26 M, in agreement with masses of known neutron stars. Restricting the component spins to the range inferred in binary neutron stars, we find the component masses to be in the range 1.17-1.60 M, with the total mass of the system 2.74-0.01+0.04M. The source was localized within a sky region of 28 deg2 (90% probabili…

neutron star: binary[ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph]X-ray binaryADVANCED LIGOAstrophysicsKilonovagravitational waves; LIGO; binary neutron star inspiralspin01 natural sciencesLIGOGeneralLiterature_REFERENCE(e.g.dictionariesencyclopediasglossaries)QCQBHigh Energy Astrophysical Phenomena (astro-ph.HE)Electromagnetic observationsGravitational-wave signals3100 General Physics and AstronomyPoint MassesAstrophysics - High Energy Astrophysical PhenomenaBlack-Hole MergersBinary neutron starsBlack HolesX-ray bursterCoalescing BinariesAstrophysics::High Energy Astrophysical Phenomena10192 Physics InstituteGeneral Relativity and Quantum Cosmology (gr-qc)Gravity wavesGravitational wavesNeutron starsPhysics and Astronomy (all)ddc:530Electromagnetic spectraNeutrons010308 nuclear & particles physicsVirgoGamma raysAstronomyRCUKVIRGOelectromagneticgravitational radiation: emissionStellar black holeGamma-ray burst[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]Compact Binariesbinary: masscosmological modelAstronomyGeneral Physics and AstronomyAstrophysicsneutron starsGamma ray burstsGeneral Relativity and Quantum CosmologyGravitational wave detectorsUniverseDENSE MATTER010303 astronomy & astrophysicsastro-ph.HEPhysicsSignal to noise ratioSettore FIS/01 - Fisica SperimentaleGravitational effectsFalse alarm rateEQUATION-OF-STATEMergers and acquisitionsgravitational waves[PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc]530 PhysicsMERGERSGeneral Relativity and Quantum Cosmology; General Relativity and Quantum Cosmology; astro-ph.HEFOS: Physical sciencesAstrophysics::Cosmology and Extragalactic Astrophysicsgamma ray: burstgravitational radiation: direct detectionMerging[ PHYS.GRQC ] Physics [physics]/General Relativity and Quantum Cosmology [gr-qc]GAMMA-RAY BURSTLIGO (Observatory)binary: coalescenceGravitational waves neutron stars gamma-ray burst LIGO Virgo0103 physical sciencesGW151226MASSESSTFCAstrophysics::Galaxy AstrophysicsPhysiqueGravitational wavegravitational radiationPULSARgravitational radiation detectorNeutron starPhysics and AstronomygravitationRADIATIONDewey Decimal Classification::500 | Naturwissenschaften::530 | Physikbinary neutron star inspiralSignal detectionPHYS REV LETT PHYSICAL REVIEW LETTERS
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A Gravitational-wave Measurement of the Hubble Constant Following the Second Observing Run of Advanced LIGO and Virgo

2021

This paper presents the gravitational-wave measurement of the Hubble constant (H 0) using the detections from the first and second observing runs of the Advanced LIGO and Virgo detector network. The presence of the transient electromagnetic counterpart of the binary neutron star GW170817 led to the first standard-siren measurement of H 0. Here we additionally use binary black hole detections in conjunction with galaxy catalogs and report a joint measurement. Our updated measurement is H 0 = km s-1 Mpc-1 (68.3% of the highest density posterior interval with a flat-in-log prior) which is an improvement by a factor of 1.04 (about 4%) over the GW170817-only value of km s-1 Mpc-1. A significant …

Gravitacióneutron star: binarycosmological model010504 meteorology & atmospheric sciencesAstronomyGravitational Waves Hubble constant O2 LIGO Virgodetector: network01 natural sciencesCosmologyGeneral Relativity and Quantum CosmologyLIGOdark energy010303 astronomy & astrophysicsQCPhysicsSettore FIS/01Hubble constantSettore FIS/05CATALOGPhysical Sciencessymbols[PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc]Astrophysics - Cosmology and Nongalactic AstrophysicsCosmology and Nongalactic Astrophysics (astro-ph.CO)DATA RELEASECOSMOLOGICAL PARAMETERSFOS: Physical sciencesO2General Relativity and Quantum Cosmology (gr-qc)Astrophysics::Cosmology and Extragalactic AstrophysicsAstronomy & AstrophysicsLUMINOSITY FUNCTIONSgravitational radiation: direct detectionGravitational-wave astronomy1STArticleelectromagnetic field: productionsymbols.namesakeBinary black hole0103 physical sciencesDISTRIBUTIONS/dk/atira/pure/subjectarea/asjc/1900/1912K-CORRECTIONSSDG 7 - Affordable and Clean EnergyAstrophysiqueSTFC0105 earth and related environmental sciencesGravitational Waves/dk/atira/pure/sustainabledevelopmentgoals/affordable_and_clean_energyScience & TechnologyGravitational waveVirgoAstronomyRCUKAstronomy and Astrophysicscosmology; gravitational waves; Hubble constant310 Galaxies and CosmologyLIGOGalaxyEVOLUTIONDewey Decimal Classification::500 | Naturwissenschaften::520 | Astronomie Kartographiegravitational radiation detectorVIRGOblack hole: binarySpace and Planetary Science[SDU]Sciences of the Universe [physics]DENSITYgravitational radiation: emissionDark energyAstronomiaddc:520/dk/atira/pure/subjectarea/asjc/3100/3103galaxyGravitational wave astronomy[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]Hubble's lawThe Astrophysical Journal
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