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Accès ouvert déclaré 2017 article

Search for continuous gravitational waves from neutron stars in globular cluster NGC 6544

27Citations signalées — pas une note de qualité
121Institutions déclarées
21Pays d’affiliation déclarés

Résumé fourni par la source

We describe a directed search for continuous gravitational waves in data from the sixth initial LIGO science run. The target was the nearby globular cluster NGC 6544 at a distance of $\ensuremath{\approx}2.7\text{ }\text{ }\mathrm{kpc}$. The search covered a broad band of frequencies along with first and second frequency derivatives for a fixed sky position. The search coherently integrated data from the two LIGO interferometers over a time span of 9.2 days using the matched-filtering $\mathcal{F}$-statistic. We found no gravitational-wave signals and set 95% confidence upper limits as stringent as $6.0\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}25}$ on intrinsic strain and $8.5\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$ on fiducial ellipticity. These values beat the indirect limits from energy conservation for stars with characteristic spin-down ages older than 300 years and are within the range of theoretical predictions for possible neutron-star ellipticities. An important feature of this search was use of a barycentric resampling algorithm which substantially reduced computational cost; this method is used extensively in searches of Advanced LIGO and Virgo detector data.

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Contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Search for continuous gravitational waves from neutron stars in globular cluster NGC 6544
Date Crossref
19/04/2017
Éditeur
American Physical Society (APS)
Type
journal-article

Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude et ne compte pas comme une seconde source scientifique indépendante.

Institutions déclarées

California Institute of TechnologyLouisiana State UniversityAmerican UniversityUniversity of SalernoUniversity of FloridaLIGO Scientific CollaborationLaboratoire d’Annecy de Physique des ParticulesUniversité Savoie Mont BlancUniversity of SannioMax Planck Institute for Gravitational PhysicsNational Institute for Subatomic PhysicsMassachusetts Institute of TechnologyInstituto Nacional de Pesquisas EspaciaisInter-University Centre for Astronomy and AstrophysicsLeibniz University HannoverUniversity of Wisconsin–MilwaukeeUniversity of PisaAustralian National UniversityUniversity of MississippiCalifornia State University, FullertonLandcare AustraliaChennai Mathematical InstituteUniversity of Rome Tor VergataUniversity of SouthamptonUniversität HamburgDélégation Paris 7Université Paris CitéMontana State UniversityUniversity of PerugiaEuropean Gravitational ObservatorySyracuse UniversityUniversity of GlasgowHUN-REN Wigner Research Centre for PhysicsColumbia UniversityStanford UniversityUniversity of PaduaUniversity of BirminghamUniversity of GenoaLomonosov Moscow State UniversityUniversity of the West of ScotlandThe University of Western AustraliaRadboud University NijmegenUniversité Côte d'AzurObservatoire de la Côte d’AzurInstitut de Physique de RennesWashington State UniversityUniversity of UrbinoLaboratoire Kastler BrosselCarleton CollegeAstronomical ObservatoryVrije Universiteit AmsterdamUniversity of Maryland, College ParkGeorgia Institute of TechnologyLyon 1 UniversitéLaboratoire des Matériaux AvancésUniversity of Naples Federico IIGoddard Space Flight CenterThe University of TokyoTsinghua UniversityTexas Tech UniversityPennsylvania State UniversityNational Tsing Hua UniversityCharles Sturt UniversityWest Virginia UniversityUniversity of ChicagoKorea Institute of Science & Technology InformationSapienza University of RomeSonoma State UniversityThe University of Texas Rio Grande ValleyUniversity of Minnesota SystemThe University of MelbourneInstitute for Plasma ResearchUniversity of SheffieldUniversity of TrentoIstituto Nazionale di Fisica Nucleare, Trento Institute for Fundamental Physics And ApplicationsMontclair State UniversityCardiff UniversityEötvös Loránd UniversityNational Astronomical Observatory of JapanUniversity of EdinburghUniversity of SzegedTata Institute of Fundamental ResearchNational Institute for AstrophysicsUniversity of MichiganRochester Institute of TechnologyFundació Universitat-Empresa de les Illes BalearsUniversitat de les Illes BalearsUniversity of BiałystokUniversity of StrathclydeIndian Institute of Science Education and Research ThiruvananthapuramUniversity of TorontoPusan National UniversityHanyang UniversityThe University of AdelaideAustralian Regenerative Medicine InstituteMonash UniversitySeoul National UniversityChinese University of Hong KongUniversity of Alabama in HuntsvilleUniversity of Massachusetts AmherstESPCI ParisUniversità di CamerinoSouthern University and Agricultural and Mechanical CollegeWilliam & MaryAmerican Institute for Economic ResearchICTP South American Institute for Fundamental ResearchUniversity of CambridgeIndian Institute of Science Education and Research KolkataRutherford Appleton LaboratoryWhitman CollegeNational Institute for Mathematical SciencesUniversité de LyonHobart and William Smith CollegesUniversity of Zielona GóraUniversidad de LondresAndrews UniversityUniversity of SienaTrinity UniversityUniversity of WashingtonKenyon CollegeAbilene Christian University

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