43 GHz-VLBI observations of 3C273 after a flux density outburst in 1988

Details 43 GHz-VLBI observations of 3C273 after a flux density outburst in 1988 43 GHz-VLBI observations of 3C273 after a flux density outburst in 1988

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...237....3k&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 237, no. 1, Oct. 1990, p. 3-11.

Astronomy and Astrophysics

Astrophysics

55

Flux Density, Infrared Imagery, Quasars, Very Long Base Interferometry, Ejecta, Stellar Cores, Stellar Motions, Stellar Radiation

Scientific paper

A total of 43 GHz images of the bright quasar 3C273 at epochs 1988.48 and 1989.19, obtained from VLBI observations made shortly after a large flux density outburst in the optical/IR band in March 1988 are presented. The later observations reveal a more complex core-jet structure than the earlier ones, indicating superluminal expansion with apparent speed of 5.5 + or - 0.8. The ejecta appear at position angles relative to the core different from those of older components, seen at larger distances, suggesting motion along curved trajectories. These data, combined with those from the literature, suggest a quasi-sinusoidally curved ridgeline of the jet near the core.

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