Direct observation of an extended X-ray jet at $z$=6.1

Abstract

We report on the direct observation of an extended X-ray jet in the $z$=6.1 radio-loud Active Galactic Nucleus PSO J030947.49+271757.31 from a deep Chandra X-ray observation (128 ksec). This detection represents the most distant kpc off-nuclear emission resolved in the X-rays to date. The angular distance of the emission is $\sim$4" (corresponding to $\sim$20 kpc at $z$=6.1), along the same direction of the jet observed at parsec scales in previous VLBA high-resolution radio observations. Moreover, the 0.5-7.0 keV isophotes coincide with the extended radio emission as imaged by the VLA Sky Survey at 3 GHz. The rest-frame 2-10 keV luminosity of the extended component is L${}_{2-10keV}$=5.9$\times$10${}^{44}$ erg s${}^{-1}$, about 8% of the core: this makes it one of the most luminous jets resolved in the X-rays so far. Through Spectral Energy Distribution modelling we find that this emission can be explained by the Inverse Compton interaction with the photons of the Cosmic Microwave Background assuming that the jet's physical parameters are similar to those in the local Universe. At the same time, we find that the radiation produced by a putative population of high-energetic electrons through the synchrotron process observed at low redshift is quenched at high redshift, hence becoming negligible.

arXiv commentAccepted for publication on A&A

References in corpus (52)

• Binary companions of evolved stars in APOGEE DR14: Search method and catalog of ~5,000 companions
• Observational Evidence of AGN Feedback
• HI4PI: A full-sky HI survey based on EBHIS and GASS
• The GMRT 150 MHz All-sky Radio Survey: First Alternative Data Release TGSS ADR1
• Relativistic Jets in Active Galactic Nuclei
• Particle acceleration by ultra-relativistic shocks: theory and simulations
• The X-Ray Jet of PKS 0637-752: Inverse Compton Radiation from the Cosmic Microwave Background ?
• The Structure of the M87 Jet: A Transition from Parabolic to Conical Streamlines
• Large scale jets in AGN: multiwavelength mapping
• X-ray Emission from Extragalactic Jets
• X-ray Emission Properties of Large Scale Jets, Hotspots and Lobes in Active Galactic Nuclei
• Chandra Discovery of a 100 kpc X-ray Jet in PKS 0637--752
• X-ray Emission Processes in Radio Jets
• A Chandra Survey of Quasar Jets: First Results
• The CatWISE Preliminary Catalog: Motions from $WISE$ and $NEOWISE$ Data
• MOJAVE: XVIII. Kinematics and Inner Jet Evolution of Bright Radio-Loud Active Galaxies
• The X-ray Jets of Active Galaxies
• Reconnection-driven particle acceleration in relativistic shear flows
• The first blazar observed at z>6
• Radio observations of active galactic nuclei with mm-VLBI
• An Introduction to Particle Acceleration in Shearing Flows
• Ruling out IC/CMB X-rays in PKS 0637-752 and the Implications for TeV Emission from Large-Scale Quasar Jets
• An X-ray jet discovered by Chandra in the z=4.3 radio-selected quasar GB 1508+5714
• Compact radio sources and jet-driven AGN feedback in the early Universe: Constraints from integral-field spectroscopy
• Quasar X-ray jets: Gamma-ray diagnostics of the synchrotron and inverse Compton hypotheses, the case of 3C 273
• Particle Acceleration in Mildly Relativistic Shearing Flows: the Interplay of Systematic and Stochastic Effects, and the Origin of the Extended High-energy Emission in AGN Jets
• Fermi Rules Out the IC/CMB Model for the Large Scale Jet X-ray Emission of 3C 273
• Hard X-ray properties of NuSTAR blazars
• An X-ray Imaging Survey of Quasar Jets -- Testing the Inverse Compton Model
• Fermi non-detections of four X-ray jet sources and implications for the IC/CMB mechanism
• Parsec-scale properties of the radio brightest jetted AGN at z > 6
• Constraining the quasar radio-loud fraction at $z\sim 6$ with deep radio observations
• Synchrotron vs Compton Interpretations for Extended X-ray Jets
• X-ray synchrotron emission from the oblique shock in the jet of the powerful radio galaxy 3C 346
• X-ray properties of z>4 blazars
• An X-ray Imaging Survey of Quasar Jets -- The Complete Survey
• X-rays from the jet in 3C 273: clues from the radio-optical spectra
• Serendipitous discovery of an extended X-ray jet without a radio counterpart in a high-redshift quasar
• Do high redshift quasars have powerful jets?
• Enhanced X-ray Emission from the Most Radio-Powerful Quasar in the Universe's First Billion Years
• Detecting Relativistic X-ray Jets in High-Redshift Quasars
• Discovery of a Kiloparsec Scale X-ray/Radio Jet in the z=4.72 Quasar GB 1428+4217
• Constraining the shear acceleration model for the X-ray emission of large-scale extragalactic jets
• Confronting X-ray Emission Models with the Highest-Redshift Kiloparsec-scale Jets: the z=3.89 Jet in Quasar 1745+624
• Inverse-Compton scattering in the resolved jet of the high-redshift quasar PKS J1421-0643
• Two Candidate High-Redshift X-ray Jets Without Coincident Radio Jets
• The Origin of the X-ray Emission in Two Well-Aligned Extragalactic Jets: The Case for IC/CMB
• Discovery of Candidate X-ray Jets in High-Redshift Quasars
• Flux-density measurements of the high-redshift blazar PSO J047.4478+27.2992 at 4.7 and 8.2 GHz with RATAN-600
• The Impact of the CMB on the Evolution of high-z Blazars
• AGN jets versus accretion as reionization sources
• Relativistic X-ray jets at high redshift

Cited by in corpus (13)

• New Radio-Loud QSOs at the end of the Re-ionisation Epoch
• The central engine of the highest redshift blazar
• Offsets between X-ray and Radio Components in X-ray Jets: The AtlasX
• Constraining the Radio Properties of the $z$=6.44 QSO VIK J2318$-$3113
• A Multi-Wavelength Study of Multiple Spectral Component Jets in AGN: Testing the IC/CMB Model for the Large-Scale-Jet X-ray Emission
• The extremely X-ray luminous radio-loud quasar CFHQS J142952+544717 at $z=6.18$ under Chandra high-angular resolution lens
• An X-ray fading, UV brightening QSO at $z\approx 6$
• Variability of extragalactic X-ray jets on kiloparsec scales
• Comprehensive view on a $z\sim 6.5$ radio-loud QSO: from the radio to the optical/NIR to the X-ray band
• High-$z$ radio Quasars in RACS I: Selection, identification, and multi-wavelength properties
• Monster radio jet (>66 kpc) observed in quasar at z$\sim$5
• Milliarcsecond X-ray astrometry to resolve inner regions of AGN at $z>1$ using gravitational lensing
• A high-resolution radio morphology and polarization of the kpc-scale X-ray jet of PKS 1127-145