Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...398...74u&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 398, no. 1, p. 74-86.
Astronomy and Astrophysics
Astronomy
41
Galactic Nuclei, Kinematics, Quasars, Radio Jets (Astronomy), Relativistic Particles, Brightness Distribution, Energy Transfer, Very Long Base Interferometry
Scientific paper
The paper presents two 5 GHz most recently obtained VLBI images of the nucleus of the quasar 3C 345 (being observed since 1977), which were obtained in 1989 and 1990 with 4 pc resolution. The images show a variety of morphological features in the jet, which can help to understand the dynamics of the central energy source and the transport of energy along the jet. Also presented are the analysis of the images, temporal variations, and the jet profile. The jet speed and the orientation of 3C 345 were determined from various observational constraints, within the framework of the relativistic twin-jet model.
Unwin Stephen C.
Wehrle Ann E.
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