Volume 436, Number 2, June III 2005
|Page(s)||L13 - L16|
|Published online||30 May 2005|
Letter to the Editor
High-resolution radio imaging of the most distant radio quasar SDSS J0836+0054
FÖMI Satellite Geodetic Observatory, PO Box 585, 1592 Budapest, Hungary e-mail: firstname.lastname@example.org
2 Joint Institute for VLBI in Europe, Postbus 2, 7990 AA Dwingeloo, The Netherlands e-mail: [zparagi;lgurvits]@jive.nl
3 Konkoly Observatory of the Hungarian Academy of Sciences, PO Box 67, 1525 Budapest, Hungary e-mail: email@example.com
Accepted: 19 April 2005
We observed SDSS J0836+0054, the most distant radio-loud quasar known at present () 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.
Key words: techniques: interferometric / radio continuum: galaxies / galaxies: active / cosmology: observations / quasars: individual: SDSS J0836+0054 / quasars: individual: J0836+0052
© ESO, 2005
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