Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...313l..85j&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 313, Feb. 15, 1987, p. L85-L90.
Astronomy and Astrophysics
Astronomy
23
Extragalactic Radio Sources, Quasars, Radio Sources (Astronomy), Astronomical Maps, Centimeter Waves, Radio Jets (Astronomy)
Scientific paper
The quasar 1928+738 has been mapped with resolution of 1arcsec.2 and 30arcsec at 20 and 49 cm wavelengths, respectively, and displays two-sided radio structure which extends up to 40arcsec on either side of the compact core along a position angle close to 0°. The redshift of this object (0.3) would indicate that the overall linear size of this emission is 235 h-1kpc. The core of this radio source has been reported to display apparent superluminal motion which suggests that the small-scale structure is aligned within 12°.5 of the line of sight to the source. If the large-scale structure is also aligned at this angle, the deprojected size is approximately 800 h-1kpc. As this unlikely, the large-scale structure is probably aligned to the line of sight at a considerably different angle (>24°) than that predicted by the superluminal motion of the milliarcsecond structure.
Biermann Peter
Eckart Andreas
Johnston Ken J.
Schalinski Cornelius
Simon Richard S.
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