The evolution of the sub-parsec structure of 3C 84 at 43 GHz

Details The evolution of the sub-parsec structure of 3C 84 at 43 GHz The evolution of the sub-parsec structure of 3C 84 at 43 GHz

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...260...33k&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 260, no. 1-2, p. 33-48.

Astronomy and Astrophysics

Astrophysics

28

Active Galaxies, Galactic Evolution, Galactic Structure, Seyfert Galaxies, Astronomical Interferometry, Data Correlation

Scientific paper

The study presents 43-GHz VLBI observations of the peculiar Seyfert-like radiogalaxy 3C 84 (NGC 1275), with an angular resolution of about 0.1 mas, corresponding to an intrinsic linear scale of about 30 light-days. Evidence is presented for existing faint emission embedded in the extended southern lobe region predominating at longer wavelengths. The occurrence of motion of this region with typical velocities of about 0.5 beta(app) is inferred, in good agreement with earlier results obtained at 22 GHz. The combination with 22-GHz data yields evidence for motion along a curved path - inclined by 60-90 deg against the northern mas-jet - for the southern component S2. The possible spatial curvature of the jet in 3C 84 and its implications for the jet-to-counterjet ratio are discussed.

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