J/ApJ/726/16ivo://CDS.VizieR/J/ApJ/726/16doi:10.26093/cds/vizier.17260016CDSLinford J.D.Taylor G.B.Romani R.W.Healey S.E.Helmboldt J.F.,Readhead A.C.S.Reeves R.Richards J.L.Cotter G.2018-01-05T08:56:56Z2012-09-10T11:25:51ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleibl-lacertae-objectsradio-galaxiesgamma-ray-astronomyquasarsastronomical-object-identificationredshiftedThe radio properties of blazars detected by the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope have been observed as part of the VLBA Imaging and Polarimetry Survey. This large, flux-limited sample of active galactic nuclei (AGNs) provides insights into the mechanism that produces strong {gamma}-ray emission. At lower flux levels, radio flux density does not directly correlate with {gamma}-ray flux. We find that the LAT-detected BL Lac objects tend to be similar to the non-LAT BL Lac objects, but that the LAT-detected FSRQs are often significantly different from the non-LAT FSRQs. The differences between the {gamma}-ray loud and quiet FSRQs can be explained by Doppler boosting; these objects appear to require larger Doppler factors than those of the BL Lac objects. It is possible that the {gamma}-ray loud FSRQs are fundamentally different from the {gamma}-ray quiet FSRQs. Strong polarization at the base of the jet appears to be a signature for {gamma}-ray loud AGNs.2011ApJ...726...16Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/726/16CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/72 : CLASS survey of radio sources (Myers+, 2003)J/ApJS/194/29 : Observations of blazars at 15GHz (Richards+, 2011)J/AJ/142/89 : Precise astrometry with VLBA (VIPS) (Petrov+, 2011)J/ApJ/722/L7 : Fermi/LAT detected MOJAVE AGNs (Pushkarev+, 2010)J/ApJ/718/587 : The Fermi-AT20G catalog (Mahony+, 2010)J/ApJ/715/429 : First Fermi-LAT AGN catalog (1LAC) (Abdo+, 2010)J/ApJ/709/1407 : SED of the Fermi blazars (Li+, 2010)J/ApJS/188/405 : Fermi-LAT first source catalog (1FGL) (Abdo+, 2010)J/ApJS/175/97 : CGRaBS: {gamma}-ray blazar candidates survey (Healey+, 2008)J/ApJ/671/1355 : EGRET blazars in VIPS (Taylor+, 2007)J/ApJ/658/203 : VLBA imaging and polarimetry survey at 5GHz (Helmboldt+, 2007)J/ApJ/626/95 : Gamma-ray blazar candidates (Sowards-Emmerd+, 2005)J/A+A/379/755 : Radio data of X- and gamma-ray loud blazars (Venturi+, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/726/16https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/726/16http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/726/16https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/726/16https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/726/16http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/726/16GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/726/16/table1 (LAT sources in VIPS (VLBA Imaging and Polarimetry Survey))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/726/16/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/726/16/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/726/16/table1?GETtext/xml+votable180.050000true115.66583354.7401890.0055555555555555566/4407 4572 4601 4866 4880 4940 4964 5072 5139 5201 5284 5371 5390 5423 5458 5546 5775 5776 5795 5817 5870 6015 6018 6088 6101 6167 6436 6501 6507 6559 6647 6996 7004 7235 7346 7354 7389 7426 7446 7709 7758 8515 8615 8699 8830 8915 9075 9204 9460 9545 9566 9570 9612 9629 9676 9711 9723 9853 9998 9999 10033 10198 10216 10250 10280 10352 10426 10466 10474 10561 10597 10681 10910 10921 10971 11027 11045 11081 11083 11153 11177 11212 11242 11290 11321 11323 11430 11522 11523 11649 11777 28066 28117 28139 28225 28370 28454 28492 28517 285425.6321591347618084e-24 5.6321591347618084e-24https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/726/16?format=asciiGamma-rayOpticalRadiodefaultJ/ApJ/726/16/table1LAT sources in VIPS (VLBA Imaging and Polarimetry Survey)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint1FGL1FGL name (JHHMM.m+DDMM) from 1LAC (Cat. J/ApJ/715/429)meta.id;meta.maincharVIPSVIPS name (JHHMMm+DDMM) (Cat. J/ApJ/658/203)meta.id.assoccharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainProb[0.51/1] Probability of AGN associationmeta.id.assoc;stat.probabilityfloatTypeOptical classification (BLL=BLLac, FSRQ=Flat Spectrum Radio Quasar, or RG=Radio Galaxy) from CGRaBS (Healey et al. 2008, Cat. J/ApJS/175/97)src.classcharz[0.028/3.033]? Redshiftsrc.redshiftfloatnullableF35The 1-100GeV photon flux from 1LAC (1)1e-05m**-2.s**-1phot.flux.density;em.gamma.hardfloate_F35?=0 F35 uncertainty1e-05m**-2.s**-1stat.errorfloatnullableTBcCore brightness temperatureKphys.temperaturedoublepsi? Jet opening half-angle {psi} (see Taylor et al., 2007, cat. J/ApJ/671/1355)degpos.posAngintnullableDPA[-84/163]? Difference between the outer and inner position angles of the jet for sources with more than two jet componentsdegpos;arith.diffintnullableS8.58.5GHz flux density from CLASS (Cat. VIII/72)mJyphot.flux.density;em.radio.6-12GHzfloatOCatCross-match with EGRET/VIPS, CGRaBS and CLASS catalogs within 5"meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.refcharNEDSimbad column added by the CDSmeta.refchar