A powerful (and likely young) radio-loud quasar at z=5.3

Abstract

We present the discovery of PSO J191.05696$+$86.43172 (hereafter PSO J191$+$86), a new powerful radio-loud quasar (QSO) in the early Universe (z = 5.32). We discovered it by cross-matching the NRAO VLA Sky Survey (NVSS) radio catalog at 1.4 GHz with the first data release of the Panoramic Survey Telescope and Rapid Response System (Pan-STARRS PS1) in the optical. With a NVSS flux density of 74.2 mJy, PSO J191$+$86 is one of the brightest radio QSO discovered at z$\sim$5. The intensity of its radio emission is also confirmed by the very high value of radio loudness (R>300). The observed radio spectrum of PSO J191$+$86 shows a possible turnover around $\sim$1 GHz (i.e., $\sim$6 GHz in the rest frame), making it a Gigahertz-Peaked Spectrum (GPS) source. However, variability could affect the real shape of the radio spectrum, since the data in hand have been taken $\sim$25 years apart. By assuming a peak of the observed radio spectrum between 1 and 2 GHz (i.e. $\sim$ 6 and 13 GHz in the rest-frame) we found a linear size of the source of $\sim$10-30 pc and a corresponding kinetic age of 150-460 yr. This would make PSO J191$+$86 a newly born radio source. However, the large X-ray luminosity (5.3$\times$10${}^{45}$ erg s${}^{-1}$), the flat X-ray photon index (${\Gamma }_X$=1.32) and the optical-X-ray spectral index ($\widetilde{{\alpha }_{ox}}$=1.329) are typical of blazars. This could indicate that the non-thermal emission of PSO J191$+$86 is Doppler boosted. Further radio observations (both on arcsec and parsec scales) are necessary to better investigate the nature of this powerful radio QSO.

arXiv comment10 pages, 9 figures, 5 tables, Accepted for publication in A&A

References in corpus (76)

• The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
• Unified Schemes for Radio-Loud Active Galactic Nuclei
• Binary companions of evolved stars in APOGEE DR14: Search method and catalog of ~5,000 companions
• The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections
• Correcting for the Effects of Interstellar Extinction
• Observational Evidence of AGN Feedback
• Composite Quasar Spectra From the Sloan Digital Sky Survey
• Methods and results of an automatic analysis of a complete sample of Swift-XRT observations of GRBs
• A Catalog of Quasar Properties from SDSS DR7
• Determining Central Black Hole Masses in Distant Active Galaxies and Quasars. II. Improved Optical and UV Scaling Relationships
• Preliminary Results from NEOWISE: An Enhancement to the Wide-field Infrared Survey Explorer for Solar System Science
• The GMRT 150 MHz All-sky Radio Survey: First Alternative Data Release TGSS ADR1
• Relativistic Jets in Active Galactic Nuclei
• Active Galactic Nuclei: what's in a name?
• The cosmological evolution of quasar black-hole masses
• An Empirical Ultraviolet Template for Iron Emission in Quasars as Derived from I Zw 1
• Biases in Virial Black Hole Masses: An SDSS Perspective
• Determining Central Black Hole Masses in Distant Active Galaxies
• Unification of Luminous Type 1 Quasars through CIV Emission
• The X-ray Properties of the Most-Luminous Quasars from the Sloan Digital Sky Survey
• Mass Functions of the Active Black Holes in Distant Quasars from the Large Bright Quasar Survey, the Bright Quasar Survey, and the Color-Selected Sample of the SDSS Fall Equatorial Stripe
• Physical properties of 15 quasars at $z\gtrsim 6.5$
• Radio galaxies and feedback from AGN jets
• Comparing Single-Epoch Virial Black Hole Mass Estimators for Luminous Quasars
• Black Hole Growth to z = 2 - I: Improved Virial Methods for Measuring M_BH and L/L_Edd
• Compact steep-spectrum and peaked-spectrum radio sources
• CIV 1549 as an Eigenvector 1 Parameter for Active Galactic Nuclei
• Spectral properties of quasars from Sloan Digital Sky Survey data release 14: The catalog
• The Dynamic Evolution of Young Extragalactic Radio Sources
• Black hole mass estimates and emission-line properties of a sample of redshift z>6.5 quasars
• Correcting CIV-Based Virial Black Hole Masses
• The case for super-critical accretion onto massive black holes at high redshift
• Gemini GNIRS near-infrared spectroscopy of 50 quasars at z>~5.7
• Black Hole Mass Estimates Based on CIV are Consistent with Those Based on the Balmer Lines
• High-Redshift SDSS Quasars with Weak Emission Lines
• Constraining the radio-loud fraction of quasars at z>5.5
• The Sloan Digital Sky Survey Reverberation Mapping Project: Estimating Masses of Black Holes in Quasars with Single-Epoch Spectroscopy
• The X-shooter/ALMA Sample of Quasars in the Epoch of Reionization. II. Black Hole Masses, Eddington Ratios, and the Formation of the First Quasars
• The X-SHOOTER/ALMA sample of Quasars in the Epoch of Reionization. I. NIR spectral modeling, iron enrichment and broad emission line properties
• Broad Line Region Physical Conditions along the Quasar Eigenvector 1 Sequence
• Redshift Evolution in Black Hole-Bulge Relations: Testing CIV-based Black Hole Masses
• Quasars That Have Transitioned from Radio-quiet to Radio-loud on Decadal Timescales Revealed by VLASS and FIRST
• Q0906+6930: The Highest-Redshift Blazar
• The first blazar observed at z>6
• Discovery of a z=6.1 Radio-Loud Quasar in the NDWFS
• Two bright z > 6 quasars from VST ATLAS and a new method of optical plus mid-infra-red colour selection
• Is Mg II 2800 a Reliable Virial Broadening Estimator for Quasars?
• The discovery of a highly accreting, radio-loud quasar at z=6.82
• A powerful radio-loud quasar at the end of cosmic reionization
• Samples and statistics of CSS and GPS sources
• Evolving parsec-scale radio structure in the most distant blazar known
• Constraining the quasar radio-loud fraction at $z\sim 6$ with deep radio observations
• SDSS J102623.61+254259.5: the second most distant blazar at z=5.3
• Discovery of a Radio-Selected z ~ 6 Quasar
• The low-frequency radio catalog of flat spectrum sources
• Black hole mass estimates in quasars - A comparative analysis of high- and low-ionization lines
• The space density of z>4 blazars
• X-ray properties of z>4 blazars
• The Optical and Ultraviolet Emission-Line Properties of Bright Quasars with Detailed Spectral Energy Distributions
• SDSS J013127.34$-$032100.1: A newly discovered radio-loud quasar at $z=5.18$ with extremely high luminosity
• The behavior of quasar C IV emission-line properties with orientation
• The evolution of the heaviest super-massive black-holes in jetted AGNs
• The radio spectral turnover of radio-loud quasars at $z>5$
• New Radio-Loud QSOs at the end of the Re-ionisation Epoch
• An extremely X--ray weak blazar at z=5
• SIPGI: an interactive pipeline for spectroscopic data reduction
• Simultaneous detection and analysis of optical and ultraviolet broad emission lines in quasars at z~2.2
• X-ray Properties of Young Radio Quasars at z > 4.5
• Variability and parsec-scale radio structure of candidate compact symmetric objects
• Observations by GMRT at 323 MHz of radio-loud quasars at $z>5$
• CIV emission line properties and uncertainties in black hole mass estimates of z ~ 3.5 quasars
• Rest-frame UV single-epoch black hole mass estimates of low-luminosity AGN at intermediate redshifts
• Flux-density measurements of the high-redshift blazar PSO J047.4478+27.2992 at 4.7 and 8.2 GHz with RATAN-600
• Filling in the Gaps in the 4.85 GHz Sky
• An X-ray fading, UV brightening QSO at $z\approx 6$
• Unveiling the monster heart: unbeamed properties of blazar 4C 71.07

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• Discovery and characterization of 25 new quasars at 4.6 < z < 6.9 from wide-field multi-band surveys
• The host galaxies of radio-loud quasars at z>5 with ALMA
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• 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
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