J/ApJ/899/141ivo://CDS.VizieR/J/ApJ/899/141doi:10.26093/cds/vizier.18990141CDSLister M.L.Homan D.C.Kovalev Y.Y.Mandal S.Pushkarev A.B.,Siemiginowska A.2022-03-14T07:07:50Z2021-11-05T07:27:15ZCDS support team

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

cds-question@unistra.frbl-lacertae-objectsactive-galactic-nucleimillimeter-astronomyphotometrysubmillimeter-astronomyastrometryWe have carried out a Chandra X-ray and multifrequency radio Very Long Baseline Array study of the active galactic nucleus (AGN) TXS0128+554, which is associated with the Fermi {gamma}-ray source 4FGLJ0131.2+5547. The AGN is unresolved in a target 19.3ks Chandra image, and its spectrum is well fit by a simple absorbed power-law model, with no distinguishable spectral features. Its relatively soft X-ray spectrum compared to other compact symmetric objects (CSOs) may be indicative of a thermal emission component, for which we were able to obtain an upper temperature limit of kT=0.08keV. The compact radio morphology and measured advance speed of 0.32c{+/-}0.07c indicate a kinematic age of only 82yr{+/-}17yr, placing TXS0128+554 among the youngest members of the CSO class. The lack of compact, inverted spectrum hotspots and an emission gap between the bright inner jet and outer radio lobe structure indicate that the jets have undergone episodic activity, and were relaunched a decade ago. The predicted {gamma}-ray emission from the lobes, based on an inverse Compton-emitting cocoon model, is three orders of magnitude below the observed Fermi-LAT flux. A comparison to other Fermi-detected and non-Fermi-detected CSOs with redshift z<0.1 indicates that the {gamma}-ray emission likely originates in the inner jet/core region, and that nearby, recently launched AGN jets are primary candidates for detection by the Fermi-LAT instrument.2020ApJ...899..141Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/899/141CatalogResearchIsServedByTAP VizieR generic servicerelated-toVIII/10 : Bell Laboratories H I Profiles (Stark+ 1992)VIII/28 : Bell Laboratories H I Survey (Stark+ 1992)VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)J/ApJS/79/77 : Bell Lab. H I Survey - High Velocity Clouds (Stark+ 1992)J/A+AS/122/235 : ROSAT active galaxies identif. (Laurent-Muehleisen+,1997)J/ApJ/560/675 : Chandra X-ray point sources in Cen A (Kraft+, 2001)J/A+A/435/521 : Radio Sources in Low-Luminosity AGNs. IV (Nagar+, 2005)J/A+A/450/959 : VLBA images of High Frequency Peakers (Orienti+, 2006)J/AJ/133/1236 : Fifth VLBA calibrator survey: VCS5 (Kovalev+, 2007)J/AJ/136/580 : Sixth VLBA calibrator survey: VCS6 (Petrov+, 2008)J/A+A/482/483 : GHz-peaked spectrum (GPS) sources (Torniainen+, 2008)J/ApJ/707/L56 : VLBI and bright Fermi/LAT sources (Kovalev, 2009)J/AJ/137/3718 : 15GHz monitoring of AGN jets with VLBA (Lister+, 2009)J/AJ/138/1874 : MOJAVE. VI. Kinematic analysis of blazar jets (Lister+, 2009)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/ApJS/199/26 : The 2MASS Redshift Survey (2MRS) (Huchra+, 2012)J/A+A/545/A113 : MOJAVE IX. Core shift effects (Pushkarev+, 2012)J/ApJ/787/151 : Fitted jet components in BL Lacertae (Cohen+, 2014)J/AJ/147/143 : MOJAVE. XI. Spectral distributions (Hovatta+, 2014)J/ApJS/218/23 : Fermi LAT third source catalog (3FGL) (Acero+, 2015)J/ApJ/810/14 : Third catalog of LAT-detected AGNs (3LAC) (Ackermann+, 2015)J/ApJS/232/18 : The third Fermi-LAT >10GeV catalog (3FHL) (Ajello+, 2017)J/A+A/598/A78 : The GMRT 150MHz all-sky radio survey (Intema+, 2017)J/ApJS/234/12 : MOJAVE XV. VLBA 15GHz obs. AGN jets 1996-2016 (Lister+, 2018)J/A+A/614/A42 : PKS B1718-649 ALMA observations (Maccagni+, 2018)J/A+A/627/A148 : TANAMI radio galaxies I (Angioni+, 2019)J/ApJ/874/43 : MOJAVE. XVII. Parsec-scale jet kinematics AGNs (Lister+, 2019)J/MNRAS/485/1822 : AGN core shift measurements (Plavin+, 2019)J/ApJS/247/33 : The Fermi LAT fourth source catalog (4FGL) (Abdollahi+, 2020)J/ApJ/892/105 : 4th catalog of Fermi LAT-detected AGNs (4LAC) (Ajello+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/899/141https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/899/141http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/899/141https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/899/141https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/899/141http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/899/141GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap9.939104355462015e-24 9.939104355462015e-24MillimeterdefaultJ/ApJ/899/141/table2Fitted 15GHz jet featuresrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDFeature identification number (1)meta.id;meta.maincharObs[2016/2019] Year of the observationtime.epochF15[1.0/63.3] The 15GHz flux densitymJyphot.flux.density;em.radio.12-30GHzfloatr[0.02/8.5]? Position offset from core feature (2)maspos;arith.difffloatnullablePA[69.5/288.7]? Position angle with respect of core feature (2)degpos.posAngfloatnullableMajAxis[0.09/3.42]? FWHM major axis of fitted Gaussianmasphys.angSize;meta.modelledfloatnullableTb[6.6/10.4]? log brightness temperaturelog(K)phys.temperaturefloatnullable