J/ApJ/810/L9ivo://CDS.VizieR/J/ApJ/810/L9doi:10.26093/cds/vizier.18109009CDSLister M.L.Aller M.F.Aller H.D.Hovatta T.Max-Moerbeck W.,Readhead A.C.S.Richards J.L.Ros E.2017-12-12T14:45:05Z2016-01-19T12:10:09ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleiradio-continuum-emissiongamma-ray-astronomyredshiftedWe use the complete MOJAVE 1.5Jy sample of active galactic nuclei (AGNs) to examine the gamma-ray detection statistics of the brightest radio-loud blazars in the northern sky. We find that 23% of these AGNs were not detected above 0.1GeV by the Fermi-LAT during the four-year 3FGL catalog period partly because of an instrumental selection effect and partly due to their lower Doppler boosting factors. Blazars with synchrotron peaks in their spectral energy distributions located below 10^13.4^Hz also tend to have high-energy peaks that lie below the 0.1GeV threshold of the LAT, and are thus less likely to be detected by Fermi. The non-detected AGNs in the 1.5Jy sample also have significantly lower 15GHz radio modulation indices and apparent jet speeds, indicating that they have lower than average Doppler factors. Since the effective amount of relativistic Doppler boosting is enhanced in gamma-rays (particularly in the case of external inverse-Compton scattering), this makes them less likely to appear in the 3FGL catalog. Based on their observed properties, we have identified several bright radio-selected blazars that are strong candidates for future detection by Fermi.2015ApJ...810L...9Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/810/L9CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)VIII/40 : GB6 catalog of radio sources (Gregory+ 1996)J/ApJ/810/14 : Third catalog of LAT-detected AGNs (3LAC) (Ackermann+, 2015)J/MNRAS/450/2658 : Blazars with RATAN-600 flux densities (Mufakharov+, 2015)J/ApJS/218/23 : Fermi LAT third source catalog (3FGL) (Acero+, 2015)J/ApJS/217/2 : Refined associations of Fermi/LAT sources (Massaro+, 2015)J/MNRAS/441/1899 : Fermi bright blazars (Fuhrmann+, 2014)J/MNRAS/438/3058 : 15GHz variability of {gamma}-ray blazars (Richards+, 2014)J/AJ/146/120 : MOJAVE. X. Parsec-scale kinematics of AGNs (Lister+, 2013)J/A+A/541/A160 : Planck + X/{gamma} observations of blazars (Giommi+, 2012)J/ApJ/744/177 : VLBA 5GHz observations of Fermi/LAT AGNs (Linford+, 2012)J/ApJ/742/27 : 15GHz and jet properties of MOJAVE blazars (Lister+, 2011)J/ApJ/741/30 : Radio/{gamma}-ray correlation in AGN (Ackermann+, 2011)J/ApJS/194/29 : Observations of blazars at 15GHz (Richards+, 2011)J/ApJ/726/16 : {gamma}-ray loud blazars (Linford+, 2011)J/ApJ/722/520 : Gamma-ray light curves of Fermi blazars (Abdo+, 2010)J/ApJ/722/L7 : Fermi/LAT detected MOJAVE AGNs (Pushkarev+, 2010)J/ApJ/718/587 : The Fermi-AT20G catalog (Mahony+, 2010)J/ApJS/188/405 : Fermi-LAT first source catalog (1FGL) (Abdo+, 2010)J/ApJ/716/30 : SED of Fermi bright blazars (Abdo+, 2010)J/ApJ/715/429 : First Fermi-LAT AGN catalog (1LAC) (Abdo+, 2010)J/MNRAS/402/2403 : Australia Telescope 20GHz Survey Catalog (Murphy+, 2010)J/ApJS/183/46 : Fermi/LAT bright gamma-ray source list (0FGL) (Abdo+, 2009)J/AJ/137/3718 : 15GHz monitoring of AGN jets with VLBA (Lister+, 2009)J/AJ/130/1418 : AGN jet kinematics (Jorstad+, 2005)http://www.physics.purdue.edu/MOJAVE/ : MOJAVE home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/810/L9https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/810/L9http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/810/L9https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/810/L9https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/810/L9http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/810/L9GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/810/L9/table1 (1.5Jy MOJAVE AGN sample properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/810/L9/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/810/L9/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/810/L9/table1?GETtext/xml+votable180.050000true1.5578869-6.39314860.0055555555555555566/532 556 579 911 1154 1263 1509 1546 1701 1782 2143 2280 2836 3024 3096 3309 3675 3820 3886 4285 4695 4770 4820 5448 5546 5597 5693 5767 5817 5848 6164 6252 6496 6507 6641 6853 6984 7389 7570 7896 7969 8031 8299 8487 8615 8717 9442 9460 9632 9633 9676 9723 10163 10249 10422 10548 11715 11845 12047 12352 12475 12580 12619 13230 13320 13352 13410 13496 13693 13927 14338 14608 14641 14737 14744 15023 15067 15286 15494 15936 16027 16049 16059 16093 16281 16298 17184 17351 17414 17579 17857 18005 18035 18378 18506 18624 18661 18669 19088 19101 19190 19398 19567 19593 19622 19831 20099 20935 21121 21266 21358 21437 21564 21758 21768 21924 21935 21960 21968 21972 22363 22375 22396 22658 22917 22950 23099 23121 23127 23323 23416 23691 24084 24571 25016 25196 25255 25302 25630 25864 26131 26292 26303 27060 27310 27417 27423 27765 28083 28479 29016 29570 29675 29714 31430 31451 31559 31664 31894 32660 32764 34675 36554 36785 38763 40527 40730 40762 42901 42980 44147 44247 44805 44908 46964 48023 48123 48595 48798 48846 489659.939104355462015e-24 9.939104355462015e-24https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/810/L9?format=asciiRadioGamma-rayOpticaldefaultJ/ApJ/810/L9/table11.5Jy MOJAVE AGN sample propertiesSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDThe J2000 identifier (JHHMM+DDMM)meta.id;meta.maincharf_ID[a] a=Low galactic latitude (|b|<10{deg})meta.codecharAliasOther identifiermeta.idcharFermiFGL name (3FGL, 1FGL or flag) (1)meta.id.crosscharz[0.004/3.4]? Redshiftsrc.redshiftdoublenullableSext[0.02/66.1]? Arcsecond-scale 15GHz flux densityJyphot.flux.density;em.radiofloatnullableSmax[0.7/33.8] Maximum 15GHz VLBA flux density (2)Jyphot.flux.density;em.radio.12-30GHzfloatSmed[0.3/23] Median 15GHz VLBA flux density (2)Jyphot.flux.density;em.radio.12-30GHzfloata[0.3/2.9]? Radio activity indexmeta.code;spect.index;em.radiofloatnullablenuobs[11.8/14.4]? Log observed synchrotron peak frequency; observer framelog(Hz)em.freq;stat.maxfloatnullablenurest[12.3/14.5]? Log observed synchrotron peak frequency; rest framelog(Hz)em.freq;stat.maxfloatnullableVLBASources within 5" of VLBA catalogs (Lister+, 2009, J/AJ/137/3718; Richards+, 2011, J/ApJS/194/29 and Lister+, 2013, J/AJ/146/120meta.ref.urlintnullableSEDPlot the spectrum with SPECFIND (Vollmer et al. 2009, Cat. VIII/85)meta.ref.urlcharNEDSimbad column added by the CDSmeta.ref.urlchar_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.main