J/AJ/137/5022ivo://CDS.VizieR/J/AJ/137/5022doi:10.26093/cds/vizier.51375022CDSNieppola E.Hovatta T.Tornikoski M.Valtaoja E.Aller M.F.Aller H.D.2017-09-19T14:21:08Z2011-12-14T17:02:56ZCDS support team

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

cds-question@unistra.frbl-lacertae-objectsradio-sourcesRadio-bright BL Lacertae objects (BLOs) are typically very variable and exhibit prominent flaring. We use a sample of 24 BLOs, regularly monitored at Metsahovi Radio Observatory, to get a clear idea of their flaring behavior in the radio domain and to find possible commonalities in their variability patterns. Our goal was to compare the results given by computational timescales and the observed variability parameters determined directly from the flux curves. Also, we wanted to find out if the BLO flares adhere to the generalized shock model, which gives a schematic explanation for the physical process giving rise to the variability. We use long-term monitoring data from 4.8, 8, 14.5, 22, 37, 90, and 230GHz, obtained mainly from the University of Michigan and Metsahovi Radio Observatories. The structure function, discrete correlation function, and Lomb-Scargle periodogram timescales, calculated in a previous study, are analyzed in more detail. Also, we determine flare durations, rise and decay times, and absolute and relative peak fluxes from the monitoring data.2009AJ....137.5022Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/137/5022CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/445/441 : SED of BL Lacertae objects (Nieppola+, 2006)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/137/5022https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/137/5022http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/137/5022https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/137/5022https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/137/5022http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/137/5022GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/137/5022/table1 (The source sample of 24 BLOs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/137/5022/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/137/5022/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/137/5022/table1?GETtext/xml+votable180.050000true18.02416722.7441670.0055555555555555566/579 4695 4770 5423 6507 7570 7896 8487 8717 9612 10422 11430 13927 15286 16059 16281 16298 18661 19831 22363 23127 28454 28492 31894https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/137/5022?format=asciiRadiodefaultJ/AJ/137/5022/table1The source sample of 24 BLOsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceSource name (HHMM+DDMM)meta.id;meta.maincharprimaryONameOther namemeta.idcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainz? Redshiftsrc.redshiftfloatnullabler_z? Redshift reference (2)meta.ref;pos.frameintnullableDvar? Doppler boosting factor of the source taken from Hovatta et al. (2009A&A...494..527H)arith.factor;spect.dopplerParamfloatnullableClass[HILBL] BLO class (High, Intermediate or Low energy-peaked BL Lac) according to Nieppola et al. (2006, Cat. J/A+A/445/441)src.classcharFlare[*] Flare analysis (1)meta.ref.urlcharSimbadSimbad column added by the CDScharNEDSimbad column added by the CDScharJ/AJ/137/5022/table2The most significant timescales obtained for the sample sources using the structure function, the discrete correlation function and the Lomb-Scargle periodogramrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceSource name (HHMM+DDMM)meta.id;meta.maincharONameOther namemeta.idcharnuObservation frequencyGHzem.freq;obsfloatl_TSF[>=] Limit flag on TSFmeta.code.errorcharTSF? Structure function timescale (1)yrtime.scalefloatnullableTDCF? Discrete correlation function timescale (1)yrtime.scalefloatnullableTP? Lomb-Scargle periodogram timescale (1)yrtime.scalefloatnullableNoteNote(s) on timescales (2)meta.notechar