J/MNRAS/462/2747ivo://CDS.VizieR/J/MNRAS/462/2747doi:10.26093/cds/vizier.74622747CDSKravchenko E.V.Kovalev Y.Y.Hovatta T.Ramakrishnan V.2024-08-16T20:18:26Z2018-04-19T12:48:44ZCDS support team

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

cds-question@unistra.frquasarsradio-sourcesgamma-ray-astronomyWe present a study of the parsec-scale multifrequency properties of the quasar S4 1030+61 during a prolonged radio and {gamma}-ray activity. Observations were performed within Fermi {gamma}-ray telescope, Owens Valley Radio Observatory 40-m telescope and MOJAVE Very Long Baseline Array (VLBA) monitoring programmes, covering five years from 2009. The data are supplemented by four-epoch VLBA observations at 5, 8, 15, 24 and 43GHz, which were triggered by the bright {gamma}-ray flare, registered in the quasar in 2010. The S4 1030+61 jet exhibits an apparent superluminal velocity of (6.4+/-0.4)c and does not show ejections of new components in the observed period, while decomposition of the radio light curve reveals nine prominent flares. The measured variability parameters of the source show values typical for Fermi-detected quasars. Combined analysis of radio and {gamma}-ray emission implies a spatial separation between emitting regions at these bands of about 12pc and locates the {gamma}-ray emission within a parsec from the central engine. We detected changes in the value and direction of the linear polarization and the Faraday rotation measure. The value of the intrinsic brightness temperature of the core is above the equipartition state, while its value as a function of distance from the core is well approximated by the power law. Altogether these results show that the radio flaring activity of the quasar is accompanied by injection of relativistic particles and energy losses at the jet base, while S4 1030+61 has a stable, straight jet well described by standard conical jet theories.2016MNRAS.462.2747Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/462/2747CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/462/2747https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/462/2747http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/462/2747https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/462/2747https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/462/2747http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/462/2747GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapGamma-rayRadiodefaultJ/MNRAS/462/2747/table1VLBA central frequenciesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBandIEEE bandinstr.bandpasscharIF[1/4] Number of the frequency channelmeta.idintFreqFrequencyMHzem.freqfloatJ/MNRAS/462/2747/table2Amplitude corrections for the S2087E VLBA experimentrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAntAntenna namemeta.id;instrcharBandRadio band nameinstr.bandpasscharEpochObservation epoch (1)time.epoch;obscharIFNumber of the frequency channelmeta.idcharPolPolarization (right of left circular)phys.polarizationcharCorrAmplitude correction coefficientinstr.paramfloatJ/MNRAS/462/2747/table3Results of Gaussian model fitting and component parameters at 4.6-43.2 GHzrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFreqFrequencyGHzem.freqfloatDateObservation datetime.epoch;obsnullableNameName of the component ("U" stands for unclassified components)meta.id;meta.maincharSIntegrated flux density in the componentJyphot.flux.density;em.radiofloate_Srms uncertainty on SJystat.errorfloatDistRadial distance of the component center from the center of the mapmaspos.angDistancefloate_Distrms uncertainty on Distmasstat.errorfloatPA[] Position angle of the component relative to the map centerdegpos.posAngfloatamajFWHM major axis of the fitted Gaussianmagphys.angSize.smajAxisfloatRatioAxial ratio of major and minor axes of fitted Gaussianphys.angSizefloatPAmaj? Major axis position angle of fitted Gaussiandegpos.posAngfloatnullable