VLBI limits on the proper motion of the 'core' of the superluminal quasar 3C345

Details VLBI limits on the proper motion of the 'core' of the superluminal quasar 3C345 VLBI limits on the proper motion of the 'core' of the superluminal quasar 3C345

Feb 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.319..733b&link_type=abstract

Nature (ISSN 0028-0836), vol. 319, Feb. 27, 1986, p. 733-738. DFG-supported research.

Astronomy and Astrophysics

Astronomy

90

Astrometry, Celestial Mechanics, Quasars, Very Long Base Interferometry, Brightness Distribution, Distance, Error Analysis, Galaxies, Position Errors

Scientific paper

VLBI (very-long-baseline interferometry) observations between 1971 and 1983 have been used to determine the positions of the 'core' of the quasar 3C345 relative to the more distant compact quasar NRAO512 with a fractional uncertainty as small as two parts in a hundred million. The core of 3C345 appears stationary in right ascension to within 20 arc microsec/yr, a subluminal bound corresponding to 0.7c. The apparent velocities of the jets are superluminal, up to 14c in magnitude.

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