J/other/RAA/13.2ivo://CDS.VizieR/J/other/RAA/13.259doi:10.26093/cds/vizier/dx/bdkcfjCDSFan J.-H.Yang J.-H.Liu Y.Zhang J.-Y.2026-02-10T20:06:54Z2014-02-17T14:58:43ZCDS support team

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

cds-question@unistra.frgamma-ray-astronomyx-ray-sourcesbl-lacertae-objectsquasarsObservations suggest that gamma-ray loud blazars are strongly beamed. The Fermi mission has detected many of blazars, which provide us with a good opportunity to investigate the emission mechanism and the beaming effect in the gamma-ray region. We compiled the X-ray observations for 138 Fermi blazars (54 flat spectrum radio quasars, 36 low-peaked BL Lacertae objects, and 48 high-peaked BL Lacertae objects) and calculated their Doppler factors, {delta}_{gamma}. It is interesting that the calculated Doppler factors, {delta}_{gamma}, are strongly correlated with the gamma-ray luminosity.2013RAA....13..259Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/RAA/13.259CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/375/739 : Hard X-ray properties of blazars (Donato+, 2001)J/ApJ/743/171 : The 2LAC catalog (Ackermann+, 2011)J/ApJS/199/31 : Fermi LAT second source catalog (2FGL) (Nolan+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/RAA/13.259https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/RAA/13.259http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/RAA/13.259https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/RAA/13.259https://vizier.iucaa.in/viz-bin/votable?-source=J/other/RAA/13.259http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/RAA/13.259GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/other/RAA/13.259/table1 (The {gamma}-ray Doppler Factor for Fermi Blazars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/RAA/13.259/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/other/RAA/13.259/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/RAA/13.259/table1?GETtext/xml+votable180.050000true8.96459.8540.0055555555555555566/398 579 2091 2143 2414 3023 3431 3886 4255 4695 4770 5423 5483 5546 5817 5915 6018 6021 6067 6088 6167 6507 6647 7038 7426 7515 7548 7576 7653 7896 7911 7969 8057 8067 8299 8374 8945 8972 9442 9460 9545 9612 9711 10195 10422 10512 10572 10605 10921 11212 11374 11444 11639 11683 12466 12619 13352 13586 13705 13820 13927 15059 15286 15969 16059 16298 17516 17579 17857 18624 18661 19088 19190 19398 19789 19831 20099 20489 20657 21768 21935 21960 21972 22363 22658 23011 23121 23134 23222 24027 24084 24775 25132 25302 25630 25864 26131 26292 26303 27060 28139 28352 28454 28479 28492 28517 29072 31431 31451 31663 31894 32261 32311 32345 34123 34428 34461 34572 35078 35786 35801 36058 37385 38261 43366 43822 44147 44247 44908 46055 46964 47014 47057 47375 48023 48595 48603https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/RAA/13.259?format=asciiGamma-rayX-raydefaultJ/other/RAA/13.259/table1The {gamma}-ray Doppler Factor for Fermi BlazarsSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2FGLName of the source in 2FGL (JHHMM.m+DDMM)meta.id;meta.maincharONameOther name for the sourcemeta.idcharCl[HLF] Classification of source (1)meta.code.classcharzRedshiftsrc.redshiftfloatFg{gamma}-ray 1-100GeV photon flux (2)ph.cm**-2.s**-1phot.flux.density;em.gamma.harddoublea.g[1.3/3.0] Photon {gamma}-ray spectral index (2)spect.indexfloatFxX-ray flux density at 1keVuJyphot.flux;em.X-rayfloata.x[-0.4/2.4] X-ray spectral index (F_nuX_{prop.to}{nu}X^-alpha^)spect.indexfloatRef[D01 NED] Reference for {gamma} and X fluxes (3)meta.ref;pos.framechar<Eg>Average {gamma}-ray photon energyGeVem.energy;stat.meanfloatdel.gDerived lower limit for the {gamma}-ray Doppler factor, {delta}_{gamma}_meta.notefloatlogLg{gamma}-ray luminosity (erg/s)log(1e-07W)phys.luminosity;em.gammafloat_RAPositions from 2FGL catalog (Nolan et al., 2012, Cat J/ApJS/199/32) (right ascension part)degpos.eq.ra;meta.main_DEPositions from 2FGL catalog (Nolan et al., 2012, Cat J/ApJS/199/32) (declination part)degpos.eq.dec;meta.main