Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...310l...7b&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 310, Nov. 1, 1986, p. L7-L10.
Astronomy and Astrophysics
Astronomy
25
Quasars, Radio Sources (Astronomy), Astronomical Maps, Luminosity, Very Long Base Interferometry
Scientific paper
The authors present three 5 GHz VLBI maps of the bright core in the triple radio source 4C 58.17 associated with the quasar 0850+581, which indicate an apparent core expansion speed of (5.3±0.8) h-1c (H0 = 100 h km s-1Mpc-1 and q0 = 0.05). The authors draw attention to the fact that superluminal motion is being found in an increasing number of radio sources with extended morphologies and discuss the difficulties that this poses for simple beaming models.
Barthel Peter D.
Canzian B. J.
Pearson Timothy. J.
Readhead Anthony C. S.
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