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dc.contributor.authorSoares-Santos, Men
dc.contributor.authorHolz, DEen
dc.contributor.authorAnnis, Jen
dc.contributor.authorChornock, Ren
dc.contributor.authorHerner, Ken
dc.contributor.authorBerger, Een
dc.contributor.authorBrout, Den
dc.contributor.authorChen, HYen
dc.contributor.authorKessler, Ren
dc.contributor.authorSako, Men
dc.contributor.authorAllam, Sen
dc.contributor.authorTucker, DLen
dc.contributor.authorButler, REen
dc.contributor.authorPalmese, Aen
dc.contributor.authorDoctor, Zen
dc.contributor.authorDiehl, HTen
dc.contributor.authorFrieman, Jen
dc.contributor.authorYanny, Ben
dc.contributor.authorLin, Hen
dc.contributor.authorScolnic, Den
dc.contributor.authorCowperthwaite, Pen
dc.contributor.authorNeilsen, Een
dc.contributor.authorMarriner, Jen
dc.contributor.authorKuropatkin, Nen
dc.contributor.authorHartley, WGen
dc.contributor.authorPaz-Chinchón, Fen
dc.contributor.authorAlexander, KDen
dc.contributor.authorBalbinot, Een
dc.contributor.authorBlanchard, Pen
dc.contributor.authorBrown, DAen
dc.contributor.authorCarlin, JLen
dc.contributor.authorConselice, Cen
dc.contributor.authorCook, ERen
dc.contributor.authorDrlica-Wagner, Aen
dc.contributor.authorDrout, MRen
dc.contributor.authorDurret, Fen
dc.contributor.authorEftekhari, Ten
dc.contributor.authorFarr, Ben
dc.contributor.authorFinley, DAen
dc.contributor.authorFoley, RJen
dc.contributor.authorFong, Wen
dc.contributor.authorFryer, CLen
dc.contributor.authorGarcía-Bellido, Jen
dc.contributor.authorGill, MSSen
dc.contributor.authorGruendl, RAen
dc.contributor.authorHanna, Cen
dc.contributor.authorKasen, Den
dc.contributor.authorLi, TSen
dc.contributor.authorLopes, PAAen
dc.contributor.authorLourenço, ACCen
dc.contributor.authorMargutti, Ren
dc.contributor.authorMarshall, JLen
dc.contributor.authorMatheson, Ten
dc.contributor.authorMedina, GEen
dc.contributor.authorMetzger, BDen
dc.contributor.authorMuñoz, RRen
dc.contributor.authorMuir, Jen
dc.contributor.authorNicholl, Men
dc.contributor.authorQuataert, Een
dc.contributor.authorRest, Aen
dc.contributor.authorSauseda, Men
dc.contributor.authorSchlegel, DJen
dc.contributor.authorSecco, LFen
dc.contributor.authorSobreira, Fen
dc.contributor.authorStebbins, Aen
dc.contributor.authorVillar, VAen
dc.contributor.authorWalker, ARen
dc.contributor.authorWester, Wen
dc.contributor.authorWilliams, PKGen
dc.contributor.authorZenteno, Aen
dc.contributor.authorZhang, Yen
dc.contributor.authorAbbott, TMCen
dc.contributor.authorAbdalla, FBen
dc.contributor.authorBanerji, Mandaen
dc.contributor.authorBechtol, Ken
dc.contributor.authorBenoit-Lévy, Aen
dc.contributor.authorBertin, Een
dc.contributor.authorBrooks, Den
dc.contributor.authorBuckley-Geer, Een
dc.contributor.authorBurke, DLen
dc.contributor.authorRosell, ACen
dc.contributor.authorKind, MCen
dc.date.accessioned2018-01-11T09:30:03Z
dc.date.available2018-01-11T09:30:03Z
dc.date.issued2017-10-20en
dc.identifier.issn2041-8205
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/270490
dc.description.abstractWe present the Dark Energy Camera (DECam) discovery of the optical counterpart of the first binary neutron star merger detected through gravitational-wave emission, GW170817. Our observations commenced 10.5 hr post-merger, as soon as the localization region became accessible from Chile. We imaged 70 deg 2 in the i and z bands, covering 93% of the initial integrated localization probability, to a depth necessary to identify likely optical counterparts (e.g., a kilonova). At 11.4 hr post-merger we detected a bright optical transient located from the nucleus of NGC 4993 at redshift z = 0.0098, consistent (for km s -1 Mpc -1 ) with the distance of 40 ±8 Mpc reported by the LIGO Scientific Collaboration and the Virgo Collaboration (LVC). At detection the transient had magnitudes of and , and thus an absolute magnitude of , in the luminosity range expected for a kilonova. We identified 1500 potential transient candidates. Applying simple selection criteria aimed at rejecting background events such as supernovae, we find the transient associated with NGC 4993 as the only remaining plausible counterpart, and reject chance coincidence at the 99.5% confidence level. We therefore conclude that the optical counterpart we have identified near NGC 4993 is associated with GW170817. This discovery ushers in the era of multi-messenger astronomy with gravitational waves and demonstrates the power of DECam to identify the optical counterparts of gravitational-wave sources.
dc.description.sponsorshipFunding for the DES Projects has been provided by the DOE and NSF(USA), MEC/MICINN/MINECO (Spain), STFC (UK), HEFCE (UK). NCSA (UIUC), KICP (U.Chicago), CCAPP (OhioState), MIFPA (TexasA&M), CNPQ, FAPERJ, FINEP (Brazil), DFG (Germany) and the Collaborating Institutions in the Dark Energy Survey. For further information please visit the publisher's website.
dc.languageengen
dc.publisherInstitute of Physics
dc.subjectbinaries: closeen
dc.subjectcatalogsen
dc.subjectgravitational wavesen
dc.subjectstars: neutronen
dc.subjectsurveysen
dc.titleThe Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. I. Discovery of the Optical Counterpart Using the Dark Energy Cameraen
dc.typeArticle
prism.issueIdentifier2en
prism.publicationDate2017en
prism.publicationNameAstrophysical Journal Lettersen
prism.volume848en
dc.identifier.doi10.17863/CAM.17378
dcterms.dateAccepted2017-10-01en
rioxxterms.versionofrecord10.3847/2041-8213/aa9059en
rioxxterms.versionVoR*
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2017-10-20en
dc.contributor.orcidBanerji, Manda [0000-0002-0639-5141]
dc.identifier.eissn2041-8213
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idSCIENCE & TECHNOLOGY FACILITIES COUNCIL (ST/N000927/1)
pubs.funder-project-idPPARC (via University College London (UCL)) (CJAAM)
cam.orpheus.successThu Jan 30 13:04:52 GMT 2020 - The item has an open VoR version.*
rioxxterms.freetoread.startdate2100-01-01


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