J/ApJ/922/222ivo://CDS.VizieR/J/ApJ/922/222CDSHuang S.Yin H.Hu S.Chen XuJiang Y.Alexeeva S.Wang Y.2024-05-14T08:41:28Z2023-05-03T09:05:59ZCDS support team

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

cds-question@unistra.frbl-lacertae-objectsgamma-ray-astronomyvisible-astronomybroad-band-photometryultraviolet-astronomyx-ray-sourcesradio-sourcesblack-holesBlazar PG 1553+113 is thought to be a host of supermassive black hole binary system. A 2.2yr quasi-periodicity in the {gamma}-ray light curve was detected, possibly a result of jet precession. Motivated by the previous studies based on the {gamma}-ray data, we analyzed the X-ray light curve and spectra observed during 2012-2020. The 2.2yr quasi-periodicity might be consistent with the main-flare recurrence in the X-ray light curve. When a weak rebrightening in the {gamma}-ray was observed, a corresponding relatively strong brightening in the X-ray light curve can be identified. The harder- when-brighter tendency in both X-ray main and weak flares was shown, as well as a weak softer-when-brighter behavior for the quiescent state. We explore the possibility that the variability in the X-ray band can be interpreted with two-jet precession scenario. Using the relation between jets and accretion disks, we derive the primary black hole mass ~3.47x10^8^M_{sun}_ and mass of the secondary one ~1.40x10^8^M_{sun}_, and their mass ratio ~0.41.2021ApJ...922..222Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/922/222CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/swift : Swift Master Catalog (HEASARC, 2004-)B/xmm : XMM-Newton Obs. Log (XMM-Newton Science Operation Center, 2012)J/ApJ/707/L56 : VLBI and bright Fermi/LAT sources (Kovalev, 2009)J/MNRAS/404/1719 : Combined NVSS-FIRST gal. (CoNFIG) sample II (Gendre+, 2010)J/A+A/520/A47 : Blazars in the Swift-BAT hard X-ray sky (Maselli+, 2010)J/ApJ/709/1407 : SED of the Fermi blazars (Li+, 2010)J/ApJ/715/429 : First Fermi-LAT AGN catalog (1LAC) (Abdo+, 2010)J/ApJ/716/30 : SED of Fermi bright blazars (Abdo+, 2010)J/ApJ/722/520 : Gamma-ray light curves of Fermi blazars (Abdo+, 2010)J/ApJ/741/30 : Radio/{gamma}-ray correlation in AGN (Ackermann+, 2011)J/ApJ/742/27 : 15GHz and jet properties of MOJAVE blazars (Lister+, 2011)J/ApJS/194/29 : Observations of blazars at 15GHz (Richards+, 2011)J/A+A/538/A26 : BL Lac objects beyond z=1.3 (Rau+, 2012)J/A+A/541/A160 : Planck + X/{gamma} observations of blazars (Giommi+, 2012)J/ApJ/748/68 : WISE IR colors of gamma-ray blazars (D'Abrusco+, 2012)J/ApJS/207/16 : BL Lac candidates for TeV observations (Massaro+, 2013)J/A+A/570/A126 : XShooter spectrum of 4 BL Lacs (Landoni+, 2014)J/MNRAS/439/690 : Optical/{gamma}-ray variability in blazars (Hovatta+, 2014)J/MNRAS/442/1693 : Gamma-ray-loud blazars opt. polarization (Pavlidou+, 2014)J/other/RAA/14.1135 : Doppler factor for a Fermi blazar sample (Fan+, 2014)J/other/Nat/515.376 : Power of relativistic jets in blazars (Ghisellini+, 2014)J/ApJ/810/14 : Third catalog of LAT-detected AGNs (3LAC) (Ackermann+, 2015)J/A+A/596/A78 : R-band polarization curves of 48 BL Lacs (Hovatta+, 2016)J/ApJ/817/111 : HST/COS survey of z<0.9 AGNs. I. (Danforth+, 2016)J/ApJ/833/77 : gamma-ray bright blazars optical polarization (Itoh+, 2016)J/MNRAS/467/3172 : HI photoionization rate at z<0.5 for QSOs (Gaikwad+, 2017)J/A+A/608/A68 : TeV/non-TeV BL Lacs multi-lambda (Fallah Ramazani+, 2017)J/ApJ/866/33 : The COS CGM compendium. I. Initial results (Lehner+, 2018)J/A+A/620/A185 : Long-term optical monitoring of TeV Blazars (Nilsson+, 2018)J/ApJS/234/12 : MOJAVE XV. 15GHz obs. of AGN jets 1996-2016 (Lister+, 2018)J/ApJS/237/30 : 6-yr light curves of 10 blazars (Meng+, 2018)J/A+A/626/A60 : F-GAMMA 2.64-43GHz data over 2007-2015 (Angelakis+, 2019)J/ApJ/871/35 : HST/COS spectra of QSOs with SiIV data (Zheng+, 2019)J/ApJ/873/132 : ICRF3 radio-loud quasars with Gaia DR2 data (Makarov+, 2019)J/ApJ/874/43 : MOJAVE. XVII. Parsec-scale AGN jet kinematics (Lister+, 2019)J/ApJ/880/29 : X-ray polarization predictions in blazars (Liodakis+, 2019)J/ApJ/884/L31 : Sp. & HST obs. of gal. in 1ES1553+113 field (Johnson+, 2019)J/PASP/132/K4102 : Beamed & unbeamed emission of gamma-ray blazars (Pei+, 2020)J/A+A/645/A18 : SVOM-ECLAIRs known X-ray sources catalogue (Dagoneau+, 2021)J/A+A/645/A137 : BVRI light curves of PG 1553+113 (Agarwal+, 2021)J/A+A/654/A169 : Radio variability to identify changing jets (Liodakis+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/922/222https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/922/222http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/922/222https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/922/222https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/922/222http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/922/222GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapGamma-rayX-rayUVOpticalRadiodefaultJ/ApJ/922/222/fig1Multiwavelength light curves of PG 1553+113Flux[5.3e-12/17.6] Flux densityphot.flux.densitydoublee_Flux[4.4e-13/1.4] Uncertainty in Fluxstat.error;phot.fluxdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBandObservation band (1)instr.bandpass;obscharMJD[53480.15/59010.5] Modified Julian Datedtime.epochdoublex_FluxFlux density units (2)meta.unit;phot.flux