J/A+A/634/A27ivo://CDS.VizieR/J/A+A/634/A27doi:10.26093/cds/vizier.36340027CDSPopovic L.C.Afanasiev V.L.Moiseev A.Smirnova A.Simic S.Savic Dj.,Mediavilla E.G.Fian C.2020-04-29T06:33:40Z2020-01-30T08:17:23ZCDS support team

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

cds-question@unistra.frquasarsgravitational-lensingspectroscopyWe present new spectroscopic and polarimetric observations of the gravitational lens SDSS J1004+4112 taken with the 6m telescope of the Special Astrophysical Observatory (SAO, Russia). In order to explain the variability that is observed only in the blue wing of the CIV emission line, corresponding to image A, we analyze the spectroscopy and polarimetry of the four images of the lensed system. Spectra of the four images were taken in 2007, 2008, and 2018, and polarization was measured in the period 2014-2017. Additionally, we modeled the microlensing effect in the polarized light, assuming that the source of polarization is the equatorial scattering in the inner part of the torus. We find that a blue enhancement in the CIV line wings affects component A in all three epochs. We also find that the UV continuum of component D was amplified in the period 2007-2008, and that the red wings of CIII] and CIV appear brighter in D than in the other three components. We report significant changes in the polarization parameters of image D, which can be explained by microlensing. Our simulations of microlensing of an equatorial scattering region in the dusty torus can qualitatively explain the observed changes in the polarization degree and angle of image D.We do not detect significant variability in the polarization parameters of the other images (A, B, and C), although the averaged values of the polarization degree and angle are different for the different images. Microlensing of a broad line region model including a compact outflowing component can qualitatively explain the CIV blue wing enhancement (and variation) in component A. However, to confirmed this hypothesis, we need additional spectroscopic observation in future.2020A&A...634A..27Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/634/A27CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/634/A27https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/634/A27http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/634/A27https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/634/A27https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/634/A27http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/634/A27GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/634/A27/s160507Spectrum of ABCD images, 16/05/2007recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLambdaWavelength0.1nmem.wlintFluxAImage A flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleFluxBImage B flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleFluxCImage C flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleFluxDImage D flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleJ/A+A/634/A27/s271008Spectrum of ABCD images, 27/10/2008recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLambdaWavelength0.1nmem.wlintFluxAImage A flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleFluxBImage B flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleFluxCImage C flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleFluxDImage D flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleJ/A+A/634/A27/s271008cImage C spectrum, 27/10/2008recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLambdaWavelength0.1nmem.wlfloatFluxImage flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleJ/A+A/634/A27/s271008dImage D spectrum, 27/10/2008recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLambdaWavelength0.1nmem.wlfloatFluxImage flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleJ/A+A/634/A27/s070218aImage A spectrum, 07/02/2018recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLambdaWavelength0.1nmem.wlfloatFluxImage flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleJ/A+A/634/A27/s070218bImage B spectrum, 07/02/2018recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLambdaWavelength0.1nmem.wlfloatFluxImage flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleJ/A+A/634/A27/s070218cImage C spectrum, 07/02/2018recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLambdaWavelength0.1nmem.wlfloatFluxImage flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleJ/A+A/634/A27/s070218dImage D spectrum, 07/02/2018recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLambdaWavelength0.1nmem.wlfloatFluxImage flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleJ/A+A/634/A27/s070218Spectrum of ABCD images, 07/02/2018recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLambdaWavelength0.1nmem.wlintFluxAImage A flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleFluxBImage B flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleFluxCImage C flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleFluxDImage D flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleJ/A+A/634/A27/s160507aImage A spectrum, 16/05/2007recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLambdaWavelength0.1nmem.wlfloatFluxImage flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleJ/A+A/634/A27/s160507bImage B spectrum, 16/05/2007recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLambdaWavelength0.1nmem.wlfloatFluxImage flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleJ/A+A/634/A27/s160507cImage C spectrum, 16/05/2007recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLambdaWavelength0.1nmem.wlfloatFluxImage flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleJ/A+A/634/A27/s160507dImage D spectrum, 16/05/2007recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLambdaWavelength0.1nmem.wlfloatFluxImage flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleJ/A+A/634/A27/s271008aImage A spectrum, 27/10/2008LambdaWavelength0.1nmem.wlfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFluxImage flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdoubleJ/A+A/634/A27/s271008bImage B spectrum, 27/10/2008recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLambdaWavelength0.1nmem.wlfloatFluxImage flux (in erg/cm^2^/{AA})10mW.m**-2.nm**-1phot.fluxdouble