J/ApJ/813/51ivo://CDS.VizieR/J/ApJ/813/51doi:10.26093/cds/vizier.18130051CDSCasadio C.Gomez J.L.Jorstad S.G.Marscher A.P.Larionov V.M.,Smith P.S.Gurwell M.A.Lahteenmaki A.Agudo I.Molina S.N.Bala V.,Joshi M.Taylor B.Williamson K.E.Arkharov A.A.Blinov D.A.,Borman G.A.Paola A.D.Grishina T.S.Hagen-Thorn V.A.Itoh R.,Kopatskaya E.N.Larionova E.G.Larionova L.V.Morozova D.A.,Rastorgueva-Foi E.Sergeev S.G.Tornikoski M.Troitsky I.S.Thum C.,Wiesemeyer H.2017-07-10T07:13:22Z2016-03-18T09:07:47ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleipolarimetryinfrared-photometryx-ray-sourcesgamma-ray-astronomyvisible-astronomyWide-band photometryultraviolet-astronomymillimeter-astronomysubmillimeter-astronomyWe perform a multi-wavelength polarimetric study of the quasar CTA 102 during an extraordinarily bright {gamma}-ray outburst detected by the Fermi Large Area Telescope in 2012 September-October when the source reached a flux of F_>100MeV_=5.2+/-0.4x10^-6^photons/cm2/s. At the same time, the source displayed an unprecedented optical and near-infrared (near-IR) outburst. We study the evolution of the parsec-scale jet with ultra-high angular resolution through a sequence of 80 total and polarized intensity Very Long Baseline Array images at 43GHz, covering the observing period from 2007 June to 2014 June. We find that the {gamma}-ray outburst is coincident with flares at all the other frequencies and is related to the passage of a new superluminal knot through the radio core. The powerful {gamma}-ray emission is associated with a change in direction of the jet, which became oriented more closely to our line of sight ({theta}~1.2{deg}) during the ejection of the knot and the {gamma}-ray outburst. During the flare, the optical polarized emission displays intra-day variability and a clear clockwise rotation of electric vector position angles (EVPAs), which we associate with the path followed by the knot as it moves along helical magnetic field lines, although a random walk of the EVPA caused by a turbulent magnetic field cannot be ruled out. We locate the {gamma}-ray outburst a short distance downstream of the radio core, parsecs from the black hole. This suggests that synchrotron self-Compton scattering of NIR to ultraviolet photons is the probable mechanism for the {gamma}-ray production.2015ApJ...813...51Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/813/51CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJ/808/162 : VLBA 15 and 43GHz obs. of 3C 120 (Casadio+, 2015)J/AJ/148/42 : S4 0954+658 outburst in 2011 March-April (Morozova+, 2014)J/MNRAS/442/1693 : Gamma-ray-loud blazars opt. polarization (Pavlidou+, 2014)J/A+A/566/A59 : 3.5 & 1.3mm polarimetric survey of AGNs (Agudo+, 2014)J/AJ/146/120 : MOJAVE. X. Parsec-scale kinematics of AGNs (Lister+, 2013)J/ApJ/768/40 : R-band & polarimetry of blazar S5 0716+71 (Larionov+, 2013)J/A+A/551/A32 : Catching the radio flare in CTA 102 (Fromm+, 2013)J/ApJS/206/17 : New gamma-ray blazar candidates in the 3PBC (Maselli+, 2013)J/AJ/144/105 : MOJAVE. VIII. Faraday rotation in AGN jets. (Hovatta+, 2012)J/ApJS/199/31 : Fermi LAT second source catalog (2FGL) (Nolan+, 2012)J/ApJ/748/68 : WISE IR colors of gamma-ray blazars (D'Abrusco+, 2012)J/ApJ/743/171 : The 2LAC catalog (Ackermann+, 2011)J/ApJ/734/43 : 3C 111 X-ray, optical & radio monitoring (Chatterjee+, 2011)J/ApJS/189/1 : A 3.5mm polarimetric survey of radio-loud AGNs (Agudo+, 2010)J/ApJ/716/30 : SED of Fermi bright blazars (Abdo+, 2010)J/AJ/138/1874 : MOJAVE. VI. Kinematic analysis of blazar jets (Lister+, 2009)J/ApJ/672/40 : AO 0235+164 outburst in 2006 December (Hagen-Thorn+, 2008)J/AJ/130/1418 : AGN jet kinematics (Jorstad+, 2005)J/A+AS/131/303 : GHz-Peaked-Spectrum radio sources (Stanghellini+ 1998)http://www.bu.edu/blazars/research.html : Research by BU blazar group pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/813/51https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/813/51http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/813/51https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/813/51https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/813/51http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/813/51GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap2.8492099152324443e-23 2.8492099152324443e-23X-rayGamma-rayInfraredOpticalUVRadiodefaultJ/ApJ/813/51/gamxrayGamma to X-ray data (part of table 1)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaSED region ("Gamma-ray"=0.1-200GeV or "X-ray"=0.3-10keV)meta.notecharMJD[52325.5/57043.5] Modified Julian date of the observationdtime.epochfloatFluxObserved flux in energy rangeph.cm**-2.s**-1phot.flux.densitydoublee_FluxUncertainty in Fluxph.cm**-2.s**-1stat.error;phot.fluxdoubleJ/ApJ/813/51/table2VLBA 43GHz model-fit components' parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCompComponent identifier (C0, C1, E1, S1 or N1-4) (1)meta.id;meta.maincharObs.Y[2007.4/2014.5] Year of the observationyrtime.epochfloatMJD[54264.5/56829.5] Modified Julian Date of the observationdtime.epochfloatFlux[18/3423] VLBA 43GHz flux densitymJyphot.flux.density;em.mm.30-50GHzinte_Flux[12/347] Uncertainty in FluxmJystat.error;phot.fluxintD-C0[0.04/2.2]? Distance from C0 component (r)maspos.angDistancefloatnullablee_D-C0[0.01/0.5]? Uncertainty in D-C0masstat.errorfloatnullablePA[-166.3/160.7]? Position angledegpos.posAngfloatnullablee_PA[0/18]? Uncertainty in PAdegstat.errorfloatnullablel_amajLimit flag on amajmeta.code.errorcharamaj[0.01/1] Angular major axis lengthmasphys.angSize.smajAxisfloate_amaj[0.001/0.1]? Uncertainty in amajmasstat.errorfloatnullableDoP[0.2/75.1]? Degree of polarization%phys.polarizationfloatnullablee_DoP[0.1/11]? Uncertainty in DoP%stat.errorfloatnullableEVPA[-89/176]? Electric vector position angledegpos.posAng;phys.polarizationfloatnullablee_EVPA[5/38]? Uncertainty in EVPAdegstat.errorfloatnullableJ/ApJ/813/51/uvtoradUV to Radio data (part of table 1)Flux[0.181/10130] Observed flux in BandmJyphot.flux.densitydoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaSED region ("UV", "Optical", "Near_Infrared" or "Radio")meta.notecharMJD[52325.5/57043.5] Modified Julian date of the observationdtime.epochfloate_Flux[0.001/1600] Uncertainty in FluxmJystat.error;phot.fluxdoubleUVband? Observational UV band (203, 223 or 263)nmmeta.code;instr.filterintnullableRadband? Observational Radio band (0.85, 1.00, 3.00 or 8.00)mmmeta.code;instr.filterfloatnullableBandObservational optical (UBVRI) or NIR (JHK) bandmeta.code;instr.filterchar