A 5 GHz Southern Hemisphere VLBI Survey of Compact Radio Sources. II.
Abstract
We report the results of a 5 GHz Southern Hemisphere snapshot VLBI observation of a sample of blazars. The observations were performed with the Southern Hemisphere VLBI Network plus the Shanghai station in 1993 May. Twenty-three flat-spectrum, radio-loud sources were imaged. These are the first VLBI images for 15 of the sources. Eight of the sources are EGRET (>100 MeV) gamma-ray sources. The milliarcsecond morphology shows a core-jet structure for 12 sources and a single compact core for the remaining 11. No compact doubles were seen. Compared with other radio images at different epochs and/or different frequencies, three core-jet blazars show evidence of bent jets, and there is some evidence for superluminal motion in the cases of two blazars. Detailed descriptions for individual blazars are given.
- Publication:
-
The Astronomical Journal
- Pub Date:
- April 1998
- DOI:
- 10.1086/300284
- arXiv:
- arXiv:astro-ph/9803104
- Bibcode:
- 1998AJ....115.1357S
- Keywords:
-
- BL LACERTAE OBJECTS: GENERAL;
- RADIO CONTINUUM: GALAXIES;
- SURVEYS;
- Astrophysics
- E-Print:
- 35 pages (6 ps figures and 5 tables), to appear in AJ April 1998