R-band polarization curves of 48 BL LacsJ/A+A/596/A78ivo://CDS.VizieR/J/A+A/596/A78doi:10.26093/cds/vizier.35960078CDSHovatta T.Lindfors E.Blinov D.Pavlidou V.Nilsson K.Kiehlmann S.,Angelakis E.Fallah Ramazani V.Liodakis I.Myserlis I.Panopoulou G.V.,Pursimo T.2017-12-15T10:55:39Z2016-12-02T09:24:30ZCDS support team
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
cds-question@unistra.frbl-lacertae-objectspolarimetryWe investigate the optical polarization properties of high-energy BL Lac objects using data from the RoboPol blazar monitoring program and the Nordic Optical Telescope. We wish to understand if there are differences between the BL Lac objects that have been detected with the current-generation TeV instruments and those objects that have not yet been detected. We used a maximum-likelihood method to investigate the optical polarization fraction and its variability in these sources. In order to study the polarization position angle variability, we calculated the time derivative of the electric vector position angle (EVPA) change. We also studied the spread in the Stokes Q/I-U/I plane and rotations in the polarization plane.2016A&A...596A..78Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/596/A78CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/596/A78https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/596/A78http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/596/A78https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/596/A78https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/596/A78http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/596/A78GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/596/A78/sources (TeV and non-TeV sample sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/596/A78/sources?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/596/A78/sources?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/596/A78/sources?GETtext/xml+votable180.050000true24.135833339.09977780.0055555555555555566/398 615 2295 2414 3431 6067 6647 7038 7548 7764 8374 8915 9711 10046 10605 11242 11522 11649 12973 13705 13820 14751 14857 15059 15211 15969 16223 16272 17843 18402 19143 23134 23835 24027 24260 28138 28492 28517 30012 31663 32174 32261 32345 32605 32621 32712 48985https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/596/A78?format=asciidefaultJ/A+A/596/A78/tevTeV-detected objects (29 objects)OnameAlias of the namemeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameJ2000 name of the source (JHHMM+DDMM)meta.id;meta.maincharJDJulian date of the observationdtime.epochdoublepfracPolarization fraction%phys.polarizationfloate_pfrac1-sigma uncertainty of polarization fraction%stat.errorfloatEVPAElectric vector position angledegphys.electField;pos.posAngfloate_EVPA1-sigma uncertainty of EVPAdegstat.errorfloatQ/IStokes Q/Iphys.polarization.stokesdoublee_Q/I1-sigma uncertainty of Q/Istat.errordoubleU/IStokes U/Iphys.polarization.stokesdoublee_U/I1-sigma uncertainty of U/Istat.errordoubleTelInstrument used for observationinstr.setupchar
J/A+A/596/A78/ctrlNon-TeV objects (19 objects)U/IStokes U/Iphys.polarization.stokesdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameJ2000 name of the source (JHHMM+DDMM)meta.id;meta.maincharOnameAlias of the namemeta.idcharJDJulian date of the observationdtime.epochdoublepfracPolarization fraction%phys.polarizationfloate_pfrac1-sigma uncertainty of polarization fraction%stat.errorfloatEVPAElectric vector position angledegphys.electField;pos.posAngfloate_EVPA1-sigma uncertainty of EVPAdegstat.errorfloatQ/IStokes Q/Iphys.polarization.stokesdoublee_Q/I1-sigma uncertainty of Q/Istat.errordoublee_U/I1-sigma uncertainty of U/Istat.errordoubleTelInstrument used for observationinstr.setupchar
J/A+A/596/A78/sourcesTeV and non-TeV sample sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTypeTeV or non-TeV sourcessrc.classcharNameJ2000 name of the source (JHHMM+DDMM)meta.id;meta.maincharRAJ2000Simbad right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainONameAlias of the name, as in Simbadmeta.idcharplotShow the measurement plotsmeta.ref.urlcharparamDisplay the polarisation degree, EVPA and Stoques Q/I and U/I measurementsmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar