Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The highest redshift radio quasar as seen with the EVN and the VLA   We report on European VLBI Network (EVN) and Very Large Array (VLA)
observations of SDSS J0836+0054, the most distant radio-loud quasar known at
present z=5.774). The source, with a total flux density of 1.1 mJy, shows a
compact structure at 10 mas angular resolution at 1.6 GHz frequency, with no
indication of multiple images produced by gravitational lensing within a 4x4
arcsec field above the brightness level of 100 microJy/beam. More recent 5 GHz
EVN observations are being analysed now. As a by-product, a two-sided mas-scale
jet structure is suspected in one of the phase-reference calibrator quasars,
PKS 0837+012.

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The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom