Inverse-Compton scattering in the resolved jet of the high-redshift quasar PKS J1421-0643

Abstract

Despite the fact that kpc-scale inverse-Compton (iC) scattering of cosmic microwave background (CMB) photons into the X-ray band is mandated, proof of detection in resolved quasar jets is often insecure. High redshift provides favourable conditions due to the increased energy density of the CMB, and it allows constraints to be placed on the radio synchrotron-emitting electron component at high energies that are otherwise inaccessible. We present new X-ray, optical and radio results from Chandra, HST and the VLA for the core and resolved jet in the $z=3.69$ quasar PKS J1421-0643. The X-ray jet extends for about $4.5^{\prime \prime }$ (32 kpc projected length). The jet's radio spectrum is abnormally steep and consistent with electrons being accelerated to a maximum Lorentz factor of about 5000. Results argue in favour of the detection of inverse-Compton X-rays for modest magnetic field strength of a few nT, Doppler factor of about 4, and viewing angle of about $15^{\circ }$, and predict the jet to be largely invisible in most other spectral bands including the far- and mid-infrared and high-energy gamma-ray. The jet power is estimated to be about $3\times 10^{46}$ erg s${}^{-1}$ which is of order a tenth of the quasar bolometric power, for an electron--positron jet. The jet radiative power is only about 0.07 per cent of the jet power, with a smaller radiated power ratio if the jet contains heavy particles, so most of the jet power is available for heating the intergalactic medium.

arXiv comment16 pages, 14 figures. Accepted for publication in MNRAS

References in corpus (69)

• The chemical composition of the Sun
• Particle acceleration by ultra-relativistic shocks: theory and simulations
• X-ray Spectra of a large sample of Quasars with ASCA
• The X-Ray Jet of PKS 0637-752: Inverse Compton Radiation from the Cosmic Microwave Background ?
• An X-ray study of magnetic field strengths and particle content in FRII radio sources
• Large scale jets in AGN: multiwavelength mapping
• Chandra Discovery of a 100 kpc X-ray Jet in PKS 0637--752
• The CORALS Survey I: New Estimates of the Number Density and Gas Content of Damped Lyman Alpha Systems Free from Dust Bias
• A survey of extended radio jets with Chandra and HST
• The Chandra X-ray Observatory Resolves the X-ray Morphology and Spectra of a Jet in PKS 0637-752
• A Chandra Survey of Quasar Jets: First Results
• XMM-Newton observations of M87 and Its X-Ray Halo
• XMM-Newton spectroscopy of high-redshift QSOs
• Structure of the X-ray Emission from the Jet of 3C 273
• Chandra observations of the X-ray jet in 3C66B
• Chandra Observations of the X-Ray Jet of 3C273
• A survey of extended radio jets in AGN with Chandra and HST: First Results
• X-ray Emission from Optically Selected Radio-Intermediate and Radio-Loud Quasars
• New Chandra observations of the jet in 3C273. I. Softer X-ray than radio spectra and the X-ray emission mechanism
• The X-ray Jets of Active Galaxies
• Deep Chandra observations of Pictor A
• The 300 kpc Long X-ray Jet in PKS 1127-145, z=1.18 Quasar: Constraining X-ray Emission Models
• The Optical - Infrared Colors of CORALS QSOs: Searching for Dust Reddening Associated With High Redshift Damped Lyman Alpha Systems
• Ruling out IC/CMB X-rays in PKS 0637-752 and the Implications for TeV Emission from Large-Scale Quasar Jets
• Magnetic field strengths in the hot spots of 3C33 and 3C111
• An X-ray jet discovered by Chandra in the z=4.3 radio-selected quasar GB 1508+5714
• Chandra and HST observations of gamma-ray blazars: comparing jet emission at small and large scales
• Polarimetry and the High-Energy Emission Mechanisms in Quasar Jets. The Case of PKS 1136-135
• Fermi Rules Out the IC/CMB Model for the Large Scale Jet X-ray Emission of 3C 273
• Low energy cut-offs and hard X-ray spectra in high-z radio-loud quasars: the Suzaku view of RBS315
• Fermi non-detections of four X-ray jet sources and implications for the IC/CMB mechanism
• The Highly Relativistic Kiloparsec-Scale Jet of the Gamma-Ray Quasar 0827+243
• An X-ray Imaging Survey of Quasar Jets -- Testing the Inverse Compton Model
• Deep Chandra and multicolor HST follow-up of the jets in two powerful radio quasars
• An X-ray and Multiwavelength Survey of Highly Radio-Loud Quasars at z > 4: Jet-Linked Emission in the Brightest Radio Beacons of the Early Universe
• Extended X-ray emission in the high redshift quasar GB 1508+5714 at z=4.3
• Chandra Reveals Twin X-ray Jets in the Powerful FR-II Radio Galaxy 3C353
• Observations of Magnetic Fields and Relativistic Beaming in Four Quasar Jets
• Chandra Observations of Radio-Loud Quasars at z > 4: X-rays from the Radio Beacons of the Early Universe
• X-ray synchrotron emission from the oblique shock in the jet of the powerful radio galaxy 3C 346
• The jet-cloud interacting radio galaxy PKS B2152-699. I. Structures revealed in new deep radio and X-ray observations
• Jets from Sub-Parsec to Kiloparsec Scales: A Physical Connection
• Chandra Detection of X-ray Absorption Associated with a Damped Lyman Alpha System
• Clumps in large scale relativistic jets
• X-Ray Absorption and an X-Ray Jet in the Radio-Loud Broad Absorption Line Quasar PG 1004+130
• The Parkes quarter-Jansky flat-spectrum sample 2. New Optical Spectra and Redshift Measurements
• Chandra Discovery of an X-ray jet and Extended X-ray Structure in z=0.63 quasar, B2 0738+313
• A Flare in the Jet of Pictor A
• An X-ray Imaging Survey of Quasar Jets -- The Complete Survey
• Chandra reveals a double-sided X-ray jet in the quasar 3C9 at z=2.012
• Serendipitous discovery of an extended X-ray jet without a radio counterpart in a high-redshift quasar
• Chandra Discovery of 10 New X-Ray Jets Associated With FR II Radio Core-Selected AGNs in the MOJAVE Sample
• Investigating the X-ray enhancements of highly radio-loud quasars at z > 4
• Detecting Relativistic X-ray Jets in High-Redshift Quasars
• Chandra observations of the hybrid morphology radio sources 3C 433 and 4C 65.15: FR IIs with asymmetric environments
• Highlights and Discoveries from the Chandra X-ray Observatory
• Constraining H0 from Chandra Observations of Q0957+561
• Discovery of a Kiloparsec Scale X-ray/Radio Jet in the z=4.72 Quasar GB 1428+4217
• X-ray spectral properties of high-redshift radio-loud quasars beyond redshift 4--first results
• X-ray absorption towards high-redshift sources: probing the intergalactic medium with blazars
• Confronting X-ray Emission Models with the Highest-Redshift Kiloparsec-scale Jets: the z=3.89 Jet in Quasar 1745+624
• New ALMA and Fermi/LAT Observations of the large-scale jet of PKS 0637-752 Strengthen the Case Against the IC/CMB Model
• X-ray Absorption of High Redshift Quasars
• The X-ray properties of typical high-redshift radio-loud quasars
• Novel Analysis of the Multiwavelength Structure of Relativistic Jet in Quasar 3C 273
• A Multi-band Study of the remarkable Jet in Quasar 4C+19.44
• A Multi-Wavelength Study of the Jet, Lobes and Core of the Quasar PKS 2101-490
• Relativistic X-ray jets at high redshift
• X-Ray Spectrum of RBS 315: Absorption or Intrinsic Curvature

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• Parsec-scale properties of the radio brightest jetted AGN at z > 6
• Enhanced X-ray Emission from the Most Radio-Powerful Quasar in the Universe's First Billion Years
• The Fundamental Planes of Black Hole Activity for Radio-Loud and Radio-Quiet Quasars
• Constraining the shear acceleration model for the X-ray emission of large-scale extragalactic jets
• Direct observation of an extended X-ray jet at $z$=6.1
• Chandra reveals a luminous Compton-thick QSO powering a $Ly\alpha$ blob in a $z=4$ starbursting protocluster
• Two Candidate High-Redshift X-ray Jets Without Coincident Radio Jets
• Radio Jet Proper-motion Analysis of Nine Distant Quasars above Redshift 3.5
• Offsets between X-ray and Radio Components in X-ray Jets: The AtlasX
• A Multi-Wavelength Study of Multiple Spectral Component Jets in AGN: Testing the IC/CMB Model for the Large-Scale-Jet X-ray Emission
• Discovery of Candidate X-ray Jets in High-Redshift Quasars
• X-ray Emission and Radio Emission from the Jets and Lobes of the Spiderweb Radio Galaxy
• Proof of CMB-driven X-ray brightening of high-z radio galaxies
• The Impact of the CMB on the Evolution of high-z Blazars
• X-Ray-to-Radio Offset Inference from Low-Count X-Ray Jets
• Variability of extragalactic X-ray jets on kiloparsec scales
• Advection of Accelerated Electrons in Radio/X-ray Knots of AGN Jets