J/ApJ/833/77ivo://CDS.VizieR/J/ApJ/833/77doi:10.26093/cds/vizier.18330077CDSItoh R.Nalewajko K.Fukazawa Y.Uemura M.Tanaka Y.T.Kawabata K.S.,Madejski G.M.Schinzel F..K.Kanda Y.Shiki K.Akitaya H.Kawabata M.,Moritani Y.Nakaoka T.Ohsugi T.Sasada M.Takaki K.Takata K.Ui T.,Yamanaka M.Yoshida M.2017-10-12T13:00:50Z2016-12-09T14:57:02ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleibl-lacertae-objectspolarimetryphotometryBlazars are highly variable active galactic nuclei that emit radiation at all wavelengths from radio to gamma rays. Polarized radiation from blazars is one key piece of evidence for synchrotron radiation at low energies, and it also varies dramatically. The polarization of blazars is of interest for understanding the origin, confinement, and propagation of jets. However, even though numerous measurements have been performed, the mechanisms behind jet creation, composition, and variability are still debated. We performed simultaneous gamma-ray and optical photopolarimetry observations of 45 blazars between 2008 July and 2014 December to investigate the mechanisms of variability and search for a basic relation between the several subclasses of blazars. We identify a correlation between the maximum degree of optical linear polarization and the gamma-ray luminosity or the ratio of gamma-ray to optical fluxes. Since the maximum polarization degree depends on the condition of the magnetic field (chaotic or ordered), this result implies a systematic difference in the intrinsic alignment of magnetic fields in parsec-scale relativistic jets between different types of blazars (flat-spectrum radio quasars vs. BL Lacs) and consequently between different types of radio galaxies (FR I versus FR II).2016ApJ...833...77Ihttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/833/77CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/218/23 : Fermi LAT third source catalog (3FGL) (Acero+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/833/77https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/833/77http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/833/77https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/833/77https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/833/77http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/833/77GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/833/77/ident (List of studied stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/833/77/ident?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/833/77/ident?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/833/77/ident?GETtext/xml+votable180.050000true12.672083-9.4847780.0055555555555555566/579 893 2414 2836 4695 4770 5423 6647 7570 7896 8199 9612 9633 11430 11649 13820 13927 15969 16059 16298 17579 17857 19398 19831 20099 21121 21972 22363 22501 23127 23222 24027 26131 26292 26340 27243 28492 28517 29570 31663 31894 32261 44908 47014https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/833/77?format=asciiOpticaldefaultJ/ApJ/833/77/identList of studied starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameBlazar ID in the form Kanata-BL-NNmeta.id;meta.mainchar3FGLFermi-LAT 3FGL name (3FGL JHHMM.m+DDMM)meta.idcharCptNameCounterpart namemeta.idcharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainlcVRJKs light curvesmeta.ref.urlcharpdpolarisation degree curvesmeta.ref.urlcharpapolarisation angle curvesmeta.ref.urlcharphotVphot/V when Johnson V photometry (1)meta.codecharphotRphot/R when R Cousins photometry (1)meta.codecharphotJphot/J when J Johnson photometry (1)meta.codecharphotKsphot/Ks when Ks Johnson photometry (1)meta.codecharPDVPD/V when V polarisation degree (1)meta.codecharPDRPD/R when R polarisation degree (1)meta.codecharPAVPA/V when V polarisation angle (1)meta.codecharPARPA/R when R polarisation angle (1)meta.codecharSimbadSimbad column added by the CDSmeta.ref.urlchar