J/MNRAS/469/4034ivo://CDS.VizieR/J/MNRAS/469/4034doi:10.26093/cds/vizier.74694034CDSO'Sullivan S.P.Purcell C.R.Anderson C.S.Farnes J.S.Sun X.H.,Gaensler B.M.2024-08-17T20:19:31Z2017-09-22T08:34:30ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleipolarimetryWe present the results from a broadband (1 to 3GHz), spectro-polarimetry study of the integrated emission from 100 extragalactic radio sources with the ATCA, selected to be highly linearly polarized at 1.4 GHz. We use a general purpose, polarization model-fitting procedure that describes the Faraday rotation measure (RM) and intrinsic polarization structure of up to three distinct polarized emission regions or 'RM components' of a source. Overall, 37%/52%/11% of sources are best fit by one/two/three RM components. However, these fractions are dependent on the signal-to-noise ratio (S/N) in polarization (more RM components more likely at higher S/N). In general, our analysis shows that sources with high integrated degrees of polarization at 1.4GHz have low Faraday depolarization, are typically dominated by a single RM component, have a steep spectral index, and a high intrinsic degree of polarization. After classifying our sample into radiative-mode and jet-mode AGN, we find no significant difference between the Faraday rotation or Faraday depolarization properties of jet-mode and radiative-mode AGN. However, there is a statistically significant difference in the intrinsic degree of polarization between the two types, with the jet-mode sources having more intrinsically ordered magnetic field structures than the radiative-mode sources. We also find a preferred perpendicular orientation of the intrinsic magnetic field structure of jet-mode AGN with respect to the jet direction, while no clear preference is found for the radiative-mode sources.2017MNRAS.469.4034Ohttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/469/4034CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/45/97 : Extragal. Radio Sources Faraday Rot. (Simard-Normandin+ 1981)J/ApJ/707/114 : Faraday rotation in Cen A (Feain, 2009)J/MNRAS/421/3300 : Complex Faraday depth structure of AGN (O'Sullivan+, 2012)J/ApJ/759/25 : Rotation measures at 1.4GHz toward the LMC (Mao+, 2012)J/AJ/144/105 : MOJAVE. VIII. Faraday rotation in AGN jets. (Hovatta+, 2012)J/AJ/149/60 : Modeling Faraday structures. I. 1100-1400 MHz (Sun+, 2015)J/ApJ/825/59 : A Study of Broadband Faraday Rotation (Anderson+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/469/4034https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/469/4034http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/469/4034https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/469/4034https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/469/4034http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/469/4034GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/469/4034/table2 (Basic properties of all sources in the sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/469/4034/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/469/4034/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/469/4034/table2?GETtext/xml+votable180.050000true0.472-30.4190.0055555555555555566/16385 16406 16451 16462 16480-16481 16483 16490 24587 24608 24619 24648 24658 24665 24724 34499-34500 34510 34534-34535 34558 35192 35245 35258 35274 35281 35285 35288 35292 35294 35314 35318-35319 35323 35325 35455 35528 35577 35579-35581 35588 35590 35603 35619 35624 35628 35631 35651 35664 35666 35717 35721 35730 35745 35843 35869 35889 35896 35902 35910 35923 35944 35971 35974 38347 38361 38364 38383 38399 38715 38734 38740 38810 43503 43515 43644 43714 43743 43756 43761 43798 43812 43822 43850 43861 43873 43906 43914-43916 44069 44106 44120 44122 44147 44173-441741.3914745465735584e-24 1.3914745465735584e-24https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/469/4034?format=asciidefaultJ/MNRAS/469/4034/table2Basic properties of all sources in the samplezRedshiftsrc.redshiftfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintplotShow the plotsmeta.ref.urlcharNameSource name (JHHMM+DDMM)meta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainalphaSpectral indexspect.indexfloatI2.1GHzIntegrated total intensity at 2.1GHzmJyphot.flux.density;em.radio.1500-3000MHzint|RRM|Absolute value of the residual rotation measurerad.m**-2phys.polarization.rotMeasurefloatsRMwPolarization-weighted RM dispersionrad.m**-2stat.variancefloatDRMwPolarization-weighted RM gradientrad.m**-2phys.polarization.rotMeasurefloat<p0>Mean intrinsic degree of polarization%phys.polarization;stat.meanfloatS/NPolarization signal-to-noise ratiostat.snr;phys.polarizationintNNumber of RM componentsmeta.numberintbetaPolarization spectral indexspect.indexfloatMorphTotal intensity morphologysrc.morphcharl_lLimit flag on lmeta.code.errorcharlLinear sizekpcphys.size.diameterintRad/Jet[0/1] Radiatice (0) or jet (1) modemeta.notecharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/469/4034/tablea1The spectropolarimetric datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (JHHMM+DDMM)meta.id;meta.maincharlsq[0.001/0.06] Wavelength squaredm**2phys.areadoubleqStokes Q/I data (fractional)phys.polarization.stokesdoubleuStokes U/I data (fractional)phys.polarization.stokesdoublee_q? Uncertainty in Q/I (fractional)stat.errordoublenullablee_u? Uncertainty in U/I (fractional)stat.errordoublenullable