Investigation of a complete sample of flat spectrum radio sources from the S5 survey

Details Investigation of a complete sample of flat spectrum radio sources from the S5 survey Investigation of a complete sample of flat spectrum radio sources from the S5 survey

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...168...17e&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 168, no. 1-2, Nov. 1986, p. 17-24.

Astronomy and Astrophysics

Astrophysics

61

Extragalactic Radio Sources, Radio Spectra, Spectrum Analysis, Visible Spectrum, X Ray Spectra, Bl Lacertae Objects, Flux Density, Quasars, Very Long Base Interferometry

Scientific paper

An analysis of 13 extragalactic sources of the S5 survey with flux densities greater than or equal to 1 Jy at 4990 MHz, mapped with milliarcsecond resolution at 1.6 and 5 GHz by means of VLBI, is presented. All sources appear to display multiple components dominated in flux density at 6 cm by a core component which is self-absorbed at 18 cm. Comparison of the measured to predicted X-ray flux density of the core radio components suggests that all sources should display bulk relativistic motion with small angles to the line of sight, and four sources show rapid changes in their radio structures which can be interpreted as apparent superliminal motion.

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