J/ApJ/928/86ivo://CDS.VizieR/J/ApJ/928/86doi:10.26093/cds/vizier.19280086CDSGorbachev M.A.Butuzova M.S.Sergeev S.G.Nazarov S.V.Zhovtan A.V.2024-11-06T20:24:35Z2024-03-01T09:58:30ZCDS support team

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

cds-question@unistra.frbl-lacertae-objectsphotometryvisible-astronomyMultiband optical photometry data of blazar S5 0716+714 obtained from 2002 to 2019 reveal stable color index change with flux variability. We analyzed this trend under variability caused by the Doppler factor change in the presence of a curved photon energy spectrum. A break in the energy spectrum of emitting electrons, caused by radiative losses, or log-parabolic electron energy distribution, or the synchrotron self-absorption acting in a compact jet part forms such the photon spectrum. We explained the observed color index change with variability by geometric effects only under the assumption that the radiating region is the synchrotron self-absorbed core and the bright optically thin jet. In this framework, we estimated the magnetic field strength in the optically thick part of the radiating region. These values correspond to other independent estimates of the magnetic field near the black hole, further supporting our assumption.2022ApJ...928...86Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/928/86CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/327/61 : BV(RI)c photometry of S5 0716+714 (Ghisellini+ 1997)J/A+A/402/151 : S5 0716+714 UBVRI photometry (Raiteri+, 2003)J/AJ/129/1818 : Photometry of S5 0716+714 (Wu+, 2005)J/A+A/451/435 : BV(RI)c photometry of S5 0716+714 (Montagni+, 2006)J/AZh/83/310 : BV(RI)c photometry of S5 0716+714 (Amirkhanyan+, 2006)J/AJ/133/1599 : B'V'R' photometry of S5 0716+714 (Wu+, 2007)J/AJ/136/1846 : BVRI light curves of S5 0716+714 (Zhang+, 2008)J/ApJS/185/511 : Optical microvariability of S5 0716+714 (Poon+, 2009)J/AJ/143/108 : B'V'R' photometry of the BL Lac object S5 0716+714 (Wu+, 2012)J/A+A/558/A92 : S5 0716+714 microvariability observation (Bhatta+, 2013)J/ApJ/783/83 : BVRI photometry of S5 0716+714 (Liao+, 2014)J/ApJS/218/18 : 2004-2012 BVRI observations of blazar S5 0716+714 (Dai+, 2015)J/A+A/601/A12 : S5 0716+714 VLBI K- and Q-band variability (Lee+, 2017)J/AJ/154/42 : BVRI photometry of S5 0716+714 in 2012 (Hong+, 2017)J/PAZh/43/407 : S5 0716+714 polarization + brightness 1991-2004J/A+A/619/A45 : S5 0716+714 multi-wavelength curves (MAGIC Coll.+, 2018)J/AJ/155/31 : 2005-2012 BVRI observations of S5 0716+714 (Hong+, 2018)J/ApJ/880/155 : RI photometry of blazars S5 0716+714 and 3C 273 (Liu+, 2019)J/ApJ/884/92 : 7yrs of VRI obs. of S5 0716+714 and its flares (Xu+, 2019)J/ApJ/888/30 : BVRI & spectroscopic light curves of S5 0716+714 (Feng+, 2020)J/ApJ/902/42 : Spectroscopic monitoring of blazar S5 0716+714 (Feng+, 2020)J/ApJS/247/49 : gri obs. of the blazar S5 0716+714 (2017-2019) (Xiong+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/928/86https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/928/86http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/928/86https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/928/86https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/928/86http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/928/86GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/928/86/table1Observational log and results in the B,V,R,I bandsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDJulian Date of the Observationdtime.epochdoubleindexedmagMagnitude in Bandmagphot.magfloate_magError in magmagstat.error;phot.magfloatBand[BVRI] bandinstr.bandpasschar