High-resolution radio imaging of the most distant radio quasar SDSS J0836+0054

Abstract

We observed SDSS J0836+0054, the most distant radio-loud quasar known at present (z=5.774) with the European Very Long Baseline Interferometry (VLBI) Network at the 5 GHz frequency on 2003 November 4. The source is compact at the milli-arcsecond (mas) angular scale with a flux density of 0.34 mJy. The observations with the Very Large Array (VLA) made on the consecutive day support a conclusion that the radio emission from SDSS J0836+0054 is essentially confined within the central 40 pc. Based on our phase-referenced VLBI observation, we obtained the astrometric position of the source accurate to ~2 mas.

arXiv comment4 pages, 4 figures, accepted as Letter for A&A

References in corpus (24)

• A fundamental plane of black hole activity
• A Survey of z>5.8 Quasars in the Sloan Digital Sky Survey I: Discovery of Three New Quasars and the Spatial Density of Luminous Quasars at z~6
• A Survey of z>5.7 Quasars in the Sloan Digital Sky Survey II: Discovery of Three Additional Quasars at z>6
• A Survey of z>5.7 Quasars in the Sloan Digital Sky Survey III: Discovery of Five Additional Quasars
• The VLBA Calibrator Survey - VCS1
• The Discovery of a Luminous z=5.80 Quasar from the Sloan Digital Sky Survey
• A supernova origin for dust in a high-redshift quasar
• Pulsar Parallaxes at 5 GHz with the Very Long Baseline Array
• Iron Emission in z~6 QSOs
• Sensitive observations at 1.4 and 250 GHz of z > 5 QSOs
• Gravitational lenses magnify up to one third of the most distant quasars
• Exploratory Chandra Observations of the Three Highest Redshift Quasars Known
• Gravitational Lensing of the SDSS High-Redshift Quasars
• A Snapshot Survey for Gravitational Lenses Among z>=4.0 Quasars: I. The z>5.7 Sample
• Radio continuum imaging of FIR luminous QSOs at z>6
• A Constraint on the Gravitational Lensing Magnification and Age of the Redshift z=6.28 Quasar SDSS 1030+0524
• Radio structure of the most distant radio-detected quasar at the ten milli- arcsecond scale
• A Chandra Search for X-Ray Jets in Redshift 6 Quasars
• The X-ray Spectrum of the z=6.30 QSO SDSS J1030+0524
• Gemini-South + FLAMINGOS Demonstration Science: Near-Infrared Spectroscopy of the z=5.77 Quasar SDSS J083643.85+005453.3
• SDSSp J104433.04$-$012502.2 at $z=5.74$ is Gravitationally Magnified by an Intervening Galaxy
• The shallow slope of the z~6 quasar luminosity function: limits from the lack of multiple image gravitational lenses
• Chandra measurement of the X-ray spectrum of a quasar at z=5.99
• Are Two z~6 Quasars Gravitationally Lensed ?

Cited by in corpus (29)

• Probing the Evolution of IR Properties of z~6 Quasars: Spitzer Observations
• Constraining the radio-loud fraction of quasars at z>5.5
• The first blazar observed at z>6
• Molecular gas in QSO host galaxies at z>5
• Three Lyman-alpha emitting galaxies within a quasar proximity zone at z=5.8
• On the nature of bright compact radio sources at z>4.5
• Into the central 10 pc of the most distant known radio quasar. VLBI imaging observations of J1429+5447 at z=6.21
• High-resolution double morphology of the most distant known radio quasar at z=6.12
• First constraints on the AGN X-ray luminosity function at $z\sim 6$ from an eROSITA-detected quasar
• The space density of z>4 blazars
• Spitzer Observations of High Redshift QSOs
• VLBI observations of the radio quasar J2228+0110 at z=5.95 and other field sources in multiple-phase-centre mode
• A new version of the OCARS catalog of Optical Characteristics of Astrometric Radio Sources
• High-resolution images of five radio quasars at early cosmological epochs
• Resolving the Radio Emission from the Quasar P172+18 at $z=6.82$
• The radio spectral turnover of radio-loud quasars at $z>5$
• Radio-loud Quasars above Redshift 4: VLBI Imaging of an Extended Sample
• Radio Jet Proper-motion Analysis of Nine Distant Quasars above Redshift 3.5
• Milli-arcsecond imaging of the radio emission from the quasar with the most massive black hole at reionization
• Observations by GMRT at 323 MHz of radio-loud quasars at $z>5$
• Conditions for direct black hole seed collapse near a radio-loud quasar 1 Gyr after the Big Bang
• Radio-loud fraction of z>6 quasars
• Multi-wavelength properties of three new radio-powerful $z\sim 5.6$ quasi-stellar objects discovered from RACS
• Active galactic nuclei cores in infrared-faint radio sources: Very long baseline interferometry observations using the Very Long Baseline Array
• Prospects for Observing High-redshift Radio-loud Quasars in the SKA Era: Paving the Way for 21-cm Forest Observations
• No strong radio absorption detected in the low-frequency spectra of radio-loud quasars at z > 5.6
• Jets in AGN at extremely high redshifts
• Multi-scale Radio and X-ray Structure of the High-redshift Quasar PMN J0909+0354
• Milliarcsecond-scale radio structure of the most distant BL Lac object candidate at redshift 6.57