J/ApJS/257/37ivo://CDS.VizieR/J/ApJS/257/37doi:10.26093/cds/vizier.22570037CDSPaliya V.S.Bottcher M.Gurwell M.Stalin C.S.2022-06-13T13:33:07Z2022-04-05T10:41:46ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleigamma-ray-astronomyx-ray-sourcesultraviolet-astronomyvisible-astronomyinfrared-astronomyradio-sourcesThe origin of {gamma}-ray flares observed from blazars is one of the major mysteries in jet physics. We have attempted to address this problem following a novel spectral energy distribution (SED) fitting technique that explored the flaring patterns identified in the broadband SEDs of two {gamma}-ray bright blazars, 3C 279 (z=0.54) and 3C 454.3 (z=0.86), using near-simultaneous radio-to-{gamma}-ray observations. For both sources, the {gamma}-ray flux strongly correlates with the separation of the SED peaks and the Compton dominance. We propose that spectral hardening of the radiating electron population and/or enhancement of the Doppler factor can naturally explain these observations. In both cases, magnetic reconnection may play a pivotal role in powering the luminous {gamma}-ray flares.2021ApJS..257...37Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/257/37CatalogResearchIsServedByTAP VizieR generic servicerelated-toVIII/76 : Leiden/Argentine/Bonn (LAB) Survey of Galactic HI (Kalberla+ 2005)J/A+A/333/231 : O-M stars model atmospheres (Bessell+ 1998)J/MNRAS/397/1177 : Swift-XRT observations of GRBs (Evans+, 2009)J/A+A/626/A60 : F-GAMMA 2.64-43GHz radio data; 2007-2015 (Angelakis+, 2019)J/A+A/627/A140 : FSRQ PKS 0346-27 light curves (Angioni+, 2019)J/MNRAS/485/1188 : The ALMA Calibrator Catalogue (Bonato+, 2019)J/ApJS/247/33 : Fermi LAT fourth source catalog (4FGL) (Abdollahi+, 2020)J/ApJ/892/105 : 4th cat. of Fermi LAT-detected AGNs (4LAC) (Ajello+, 2020)J/ApJS/253/46 : Optical spectroscopy of Fermi blazars (Paliya+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/257/37https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/257/37http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/257/37https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/257/37https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/257/37http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/257/37GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapGamma-rayX-rayUVOpticalInfraredRadiodefaultJ/ApJS/257/37/table1*The multiwavelength data for 3C 279recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTStart[54685.7/59233.7] Modified Juliand Date of light curve bin startdtime.startfloatTStop[54688.7/59236.7] Modified Juliand Date of light curve bin stopdtime.endfloatlogf[9.17/25.6] log observed frequencylog(Hz)em.freqfloatlogL[44.33/48.55] Log observed luminosity; erg/slog(1e-07W)phys.luminosityfloate_logL[0/0.7] Uncertainty in logLlog(1e-07W)stat.errorfloatJ/ApJS/257/37/table2*The multiwavelength data for 3C 454.3recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTStart[54682.7/57574.7] Modified Juliand Date of light curve bin startdtime.startfloatTStop[54685.6/57577.7] Modified Juliand Date of light curve bin stopdtime.endfloatlogf[9.42/25] log observed frequencylog(Hz)em.freqfloatlogL[45/49.55] Log observed luminosity; erg/slog(1e-07W)phys.luminosityfloate_logL[0/0.51] Uncertainty in logLlog(1e-07W)stat.errorfloat