Non-radial ejection in 3C345

Details Non-radial ejection in 3C345 Non-radial ejection in 3C345

Nov 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983natur.306...42b&link_type=abstract

Nature (ISSN 0028-0836), vol. 306, Nov. 3, 1983, p. 42-44.

Astronomy and Astrophysics

Astronomy

35

Extragalactic Radio Sources, Plasma Jets, Quasars, Relativistic Electron Beams, Astronomical Models, Centimeter Waves, Relativistic Velocity

Scientific paper

VLBI 10.651-GHz observations of the radio source 3C345 obtained with a bandwidth of 1.8 MHz, left-circular polarization, and an angular resolution at the longest baseline of lambda/2D = 0.33 milliarcsec at epochs 1981.10, 1982.10, 1982.86, and 1983.10 are reported and discussed. A new radio component C4 is identified and shown to be moving on a nonradial path, with relative position angle and separation from the compact component D increasing monotonically with epoch. In the relativistic jet model of the superluminal effect (Blandford and Koenigl, 1979), the finding that the trajectory of C4 is not appreciably curved between r = 0.3 and r = 0.5 milliarcsec implies that there is strong curvature at r less than 0.3 milliarcsec if C4 originates in the core. The proper motion of C4 is found to have accelerated from 0.10 + or - 0.04 to 0.24 + or - 0.04 milliarcsec/yr from 1981 to 1982.

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