J/MNRAS/520/6053ivo://CDS.VizieR/J/MNRAS/520/6053doi:10.26093/cds/vizier.75206053CDSPushkarev A.B.Aller H.D.Aller M.F.Homan D.CKovalev Y.Y.,Lister M.L.Pashchenko I.N.Savolainen T.ZobninaD.I.2024-08-22T20:16:58Z2023-03-08T18:14:38ZCDS support team

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

cds-question@unistra.frradio-galaxiesinterferometryvery-long-baseline-interferometryWe analysed the parsec-scale linear polarization properties of 436 active galactic nuclei (AGN) based on 15GHz polarimetric Very Long Baseline Array (VLBA) observations. We present polarization and total intensity images averaged over at least five epochs since 1996 January 19 through 2019 August 4. Stacking improves the image sensitivity down to ~30uJy/beam and effectively fills out the jet cross-section both in total intensity and linear polarization. It delineates the long-term persistent magnetic field configuration and its regularity by restoring spatial distributions of the electric vector position angle (EVPA) and fractional polarization, respectively. On average, about ten years of stacking period is needed to reveal the stable and most-complete polarization distribution of a source. We find that the degree of polarization significantly increases down and across the jet towards its edges, typically manifesting U or W-shaped transverse profiles, suggesting a presence of a large-scale helical magnetic field associated with the outflow. In some AGN jets, mainly BL Lacs, we detect quasi-constant fractional polarization profiles across the jet, accompanied by EVPAs that closely follow the outflow. BL Lacs show higher fractional polarization values in their cores and jets than those in quasars up to hectoparsec de-projected scales, while on larger scales, they become comparable. High-synchrotron-peaked BL Lac jets are found to be less polarized than intermediate and low-synchrotron-peaked BL Lacs. The spatial distribution of the EVPAs in BL Lacs tend to align with the local jet direction, while quasars show an excess of orthogonal polarization orientation.2023MNRAS.520.6053Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/520/6053CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/137/3718 : 15GHz monitoring of AGN jets with VLBA (Lister+, 2009)J/ApJS/171/376 : MOJAVE. III. VLA 1.4GHz images (Cooper+, 2007)J/AJ/131/1262 : Circular polarization images at 15GHz of AGN jetsJ/AJ/130/1389 : Linear polarization of AGN jets at 15GHz (Lister+, 2005)J/AJ/138/1874 : MOJAVE. VI. Kinematic analysis of blazar jetsJ/ApJ/706/1253 : MOJAVE VII. Blazar jet acceleration (Homan+, 2009)J/AJ/144/105 : MOJAVE. VIII. Faraday rotation in AGN jets. (Hovatta+, 2012)J/A+A/545/A113 : MOJAVE IX. Core shift effects (Pushkarev+, 2012)J/AJ/146/120 : MOJAVE. X. Parsec-scale kinematics of AGNs (Lister+, 2013)J/AJ/147/143 : MOJAVE. XI. Spectral distributions (Hovatta+, 2014)J/ApJ/798/134 : MOJAVE. XII. Acceleration of blazar jets (Homan+, 2015)J/AJ/152/12 : MOJAVE. XIII. New 15GHz observations on 1994-2013J/MNRAS/468/4992 : MOJAVE XIV. AGN jet shapes + opening anglesJ/ApJS/234/12 : MOJAVE XV. VLBA 15GHz obs. of AGN jets 1996-2016J/ApJ/862/151 : MOJAVE. XVI: parsec-scale AGN jet cores at 15GHzJ/ApJ/874/43 : MOJAVE. XVII. Parsec-scale jet kinematics of AGNshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/520/6053https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/520/6053http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/520/6053https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/520/6053https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/520/6053http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/520/6053GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/520/6053/table1 (Source properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/520/6053/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/520/6053/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/520/6053/table1?GETtext/xml+votable180.050000true1.5578869-6.39314860.0055555555555555566/18 60 110 514 532 556 579 674 700 893 911 968 1085 1154 1263 1342 1450 1509 1546 1622 1700-1702 1782 2122 2140 2143 2214 2228 2280 2414 2549 2574 2721 2836 2929 3017 3024 3052 3096 3099 3309 3492 3616 3675 3710 3712 3784 3820 3876 3882 3886 3951 4027 4054 4080 4285 4572 4685 4695 4770 4820 4865 4964 4977 5139 5353 5423 5448 5458 5460 5546 5597 5693 5767 5817 5848 6018 6088 6164 6252 6368 6496 6507 6641 6647 6777 6815 6822 6853 6888 6963 6984 6996 7004 7045 7091 7129 7226 7235 7371 7389 7446 7548 7570 7653 7745 7758 7857 7896 7969 8004 8031 8177 8199 8220 8299 8466 8487 8515 8615 8699 8717 8915 9003 9075 9248 9442 9460 9545 9570 9612 9629 9632-9633 9676 9688 9711 9714 9723 9998 10006 10163 10170 10249-10250 10321 10352 10422 10501 10548 10681 10921 11045 11153 11212 11242 11430 11522-11523 11529 11552 11631 11639-11640 11649 11715 11845 12047 12241 12323 12352 12444 12466 12475 12580 12599 12604 12619 12625 12664 12851 12896 12921 13156 13230 13320 13352 13410 13447 13485 13496 13572 13582 13693 13729 13820 13927 14068 14338 14520 14641 14737 14744 14797 14842 14854 14858 15023 15067 15147 15211 15286 15373 15490 15494 15916 15936 15969 16027 16049 16059 16093 16113 16184 16247 16272 16281 16298 16301 16355 16720 17184 17186 17351 17364 17414 17516 17541 17579 17857 17917 17927 18005 18035 18037 18158 18253 18378 18457 18506 18624 18661 18669 18718 18821 19088 19101 19109 19190 19271 19370 19373 19398 19487 19523 19567 19593 19622 19831 19878 20099 20224 20468 20836 20888 20920 20935 21121 21266 21358 21437 21564 21574 21758 21768 21793 21873 21924 21935 21960 21968 21972 22271 22363 22375 22396 22501 22658 22894 22917 22950 23014-23015 23099 23121 23127 23323 23416 23691 23786 23897 24084 24123 24260 24444 24571 24775 24828 24845 25016 25196 25255 25302 25409 25503 25630 25742 25818 25864 26083 26115 26131 26292 26303 26340 26363 26491 26550 26614 26898 26900 26966 27060 27124 27138 27144 27243 27310 27417 27423 27433 27765 28083 28117 28139 28225 28249 28454 28479 28492 28517 29016-29017 29570 29620 29675 29714 29772 29952 30012 30446 30667 31190 31391 31399 31430 31451 31461 31559 31599 31656 31663-31664 31773 31894 31930 31986 32034 32311 32345 32660 32764 34675 35706 35786 36058 36090 36151 36188 36554 36602 36785 38763 40353 40434 40479 40527 40730 40762 40766 40811 40874 40885 42901 42980 44147 44153 44247 44526 44730 44791 44805 44908 46963-46964 48023 48123 48595 48798 48846 48965 49071 49083https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/520/6053?format=asciiRadiodefaultJ/MNRAS/520/6053/table1Source propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameB1950Source name (B1950)meta.id;meta.maincharNameJ2000Source name (J2000)meta.idcharAliasOther namemeta.idcharz? Redshiftsrc.redshiftdoublenullableOptClass[BGNQU] Optical classsrc.classcharFlag1.5Jy[Y/N] MOJAVE 1.5 Jy sample membership flagmeta.code.errorcharLAT[Y/N] Fermi LAT detectedmeta.codecharSEDSED classmeta.code.classcharr_zReference for redshift / optical class (1)meta.ref;pos.framecharr_SEDReference for SED classificationmeta.ref;pos.framechar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainSimbadNameSimbad column added by the CDSmeta.idcharnullableJ/MNRAS/520/6053/table2Summary of 15 GHz stacked map parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameB1950Source name (B1950)meta.id;meta.maincharDateDate of first epochtime.epochnullabletauTime range between first and last epochsyrtime.intervalfloatNNumber of stacked epochsmeta.numberintBeamFWHM of circular restoring beammasphys.angSize;instr.beamfloatIpeakTotal intensity peak of image at 15GHzmJy/beamphot.flux.density;em.radio.12-30GHzfloatPpeakPolarized intensity peak of image at 15GHzmJy/beamphot.flux.density;em.radio.12-30GHzfloatIrmsrms noise level of I-image at 15GHzmJy/beaminstr.det.noisefloatPrmsrms noise level of P-image at 15GHzmJy/beaminstr.det.noisefloat