J/A+AS/146/141ivo://CDS.VizieR/J/A+AS/146/141CDSPursimo T.Takalo L.O.Sillanpaeae A.Kidger M.Lehto H.J.Heidt J.,Charles P.A.Aller H.Aller M.Beckmann V.Benitez E.Bock H.,Boltwood P.Borgeest U.De Diego J.A.De Francesco G.Dietrich M.,Dultzin-Hacyan D.Efimov YU.Fiorucci M.Ghisellini G.,Gonzalez-perez J.N.Hanski M.Heinaemaeki P.Honeycutt R.K.Hughes P.,Karlamaa K.Katajainen S.Knee L.B.G.Kurtanidze O.M.Kuemmel M.,Kuehl D.Lainela M.Lanteri L.Von Linde J.Laehteenmaeki A.,Maesano M.Mahoney T.Marchenko S.Marscher A.Massaro E.Montagni F.,Nesci R.Nikolashvili M.Nilsson K.Nurmi P.Pietilae H.Poyner G.,Raiteri C.M.Rekola R.Richter G.M.Riehokainen A.Robertson J.W.,Rodriguez-Espinoza J.M.Sadun A.Shakhovskoy N.Schramm K.J.,Schramm T.Sobrito G.Teerikorpi P.Teraesranta H.Tornikoski M.,Tosti G.Turner G.W.Valtaoja E.Valtonen M.Villata M.Wagner S.J.,Webb J.Weneit W.Wiren S.2021-12-03T12:36:11Z2021-09-15T10:09:21ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frbl-lacertae-objectsphotometrypolarimetryradio-continuum-emissionWe present intensive optical, infrared, and radio monitoring observations of the BL Lac object OJ 287, taken between the years 1993-1998. Two large optical outbursts were detected at the predicted times in November 1994 and December 1995. The detection of these outbursts supports the binary black hole model for OJ 287. Optical and radio polarisation observations show large variability in the degree of polarisation and position angle, very similar to those observed during the 1983/84 outburst in OJ 287. The polarisation position angles show very similar behaviour during these observations, indicating that, at least, the magnetic field orientations in radio and optical bands are related in OJ 287. Optical and infrared light curves show continuous variability in time scales ranging from tens of minutes to years. In the radio bands we have observed some of the lowest ever measured flux levels. During the first optical outburst in November 1994 the observed radio flux was very low, but during the second optical outburst radio bands also showed high flux levels. This is a puzzling observation, which can hopefully be used for discriminating between different outburst models. On top of the large outbursts OJ 287 has displayed flaring activity in time scales from days to weeks and shorter time scale flickering.2000A&AS..146..141Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/146/141CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+AS/129/569 : BVRI photometry of OJ 287 (Jia Guibin+ 1998)J/AJ/132/1256 : eim BATC photometry of OJ 287 (Wu+, 2006)J/MNRAS/385/823 : UBVRI light curves of OJ 287 (Zheng+, 2008)J/MNRAS/402/2087 : Optical polarization of OJ 287 in 2005-2009J/AJ/141/65 : BATC ceimo light curves of OJ 287 (Dai+, 2011)J/ApJ/764/5 : BR photometry of 2012 precursor flare in OJ287J/A+A/597/A80 : GMVA 86GHz images of OJ 287 (Hodgson+, 2017)J/ApJ/835/275 : OJ 287 flux + polarization during 2016 outburstJ/A+A/610/A74 : OJ 287 far-infrared photometry (Kidger+, 2018)J/A+A/619/A88 : High cadence polarization monitoring of OJ287J/AJ/157/95 : Optical variability of OJ 287 in 2016-2017 (Gupta+, 2019)J/ApJ/862/1 : Rotation reversals in the polarization in OJ 287https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/146/141https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/146/141http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/146/141https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/146/141https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/146/141http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/146/141GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapRadiodefaultJ/A+AS/146/141/table1Optical observations of OJ 287recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDTime of observation Julian Datedtime.epochdoublel_magUpper limit flag on magmeta.code.errorcharmagInstrumental Magnitudemagphot.magfloate_mag? Uncertainty in Magnitude (brightness upper limit indicated as 9.99)magstat.error;phot.magfloatnullableB[1/5] Pass Band identifier (G1)meta.codeintO[01/16] Observation identifier (G2)meta.codeintInst[1/6] Magnitude zero point (G3)meta.id;instrintBand[UBVRI] Human readable Passbandinstr.bandpasscharJ/A+AS/146/141/table2NIR observations of OJ 287magMagnitudemagphot.magfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDTime of observation Julian Datedtime.epochdoublel_magUpper limt flag on magmeta.code.errorchare_mag? Magnitude error (brightness upper limit indicated as 9.999)magstat.error;phot.magfloatnullableB[6/9] Code For Pass Band or Frequency (G1)meta.codeintO[13/99] Origin of Observation (G2)meta.codeintBand[JHKE] Human readable Passbandinstr.bandpasscharJ/A+AS/146/141/table3Radio flux density 5-375GHz observations of OJ 287recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDTime of observation Julian Datedtime.epochdoubleFluxFlux densityJyphot.flux.density;em.radiofloate_FluxFlux density errorJystat.error;phot.fluxfloatB[11/20] Code For Frequency (G1)meta.codeintO[10/24] Origin of Observation (G2)meta.codeintBandHuman readable Frequency (1)instr.bandpasscharJ/A+AS/146/141/table4IUE UV observations of OJ 287recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDTime of observation Julian Datedtime.epochdoubleFluxFlux densityJyphot.flux.density;em.radiofloate_FluxFlux density errorJystat.error;phot.fluxfloatB[11/20] Code For Frequency (G1)meta.codeintO[10/24] Origin of Observation (G2)meta.codeintBandHuman readable Frequency (1)instr.bandpasscharJ/A+AS/146/141/table5Optical polarimetry observations of OJ 287recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDTime of observation Julian Datedtime.epochdoublePDegree of linear polarization%phys.polarization.linearfloate_PError in linear polarization%stat.errorfloatPAPosition Angledegpos.posAngfloate_PAError in Position Angledegstat.errorfloatB[1/13] Code For Band (G1)meta.codeintO[01/21] Origin of Observation (G2)meta.codeintBandHuman readable Passband (1)instr.bandpasscharJ/A+AS/146/141/table6Radio polarimetry observations of OJ 287recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDTime of observation Julian Datedtime.epochdoublePDegree of linear polarization%phys.polarization.linearfloate_PError in linear polarization%stat.errorfloatPAPosition Angledegpos.posAngfloate_PAError in Position Angledegstat.errorfloatB[1/13] Code For Band (G1)meta.codeintO[01/21] Origin of Observation (G2)meta.codeintBandHuman readable Passband (1)instr.bandpasscharJ/A+AS/146/141/table7Visual brightness estimates of OJ 287recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDTime of observation Julian Datedtime.epochdoublel_magUpper limt flag on magmeta.code.errorcharmagMagnitudemagphot.magfloate_mag? Magnitude error (brightness upper limit indicated as 9.999)magstat.error;phot.magfloatnullableB[6/9] Code For Pass Band or Frequency (G1)meta.codeintO[13/99] Origin of Observation (G2)meta.codeintBand[JHKE] Human readable Passbandinstr.bandpasschar