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

被引：28

作者：

Frey, S

Paragi, Z

Mosoni, L

Gurvits, LI

机构：

[1] FOMI Satellite Geodet Observ, H-1592 Budapest, Hungary

[2] Joint Inst VLBI Europe, NL-7990 AA Dwingeloo, Netherlands

[3] Hungarian Acad Sci, Konkoly Observ Budapest, H-1525 Budapest, Hungary

来源：

ASTRONOMY & ASTROPHYSICS | 2005年 / 436卷 / 02期

关键词：

techniques : interferometric; radio continuum : galaxies; galaxies : active; cosmology : observations; quasars : individual : SDSS J0836 J0836+0054; quasars : individual : J0836 J0836+0052;

D O I：

10.1051/0004-6361:200500112

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We observed SDSS J0836 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 flux on the consecutive day support a conclusion that the radio emission from SDSS J0836 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 similar to 2 mas.

引用

页码：L13 / L16

页数：4

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