A 5-GHz Southern Hemishere VLBI Survey of Compact Radio Sources.I.

view Abstract Citations (53) References (113) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A 5-GHz Southern Hemishere VLBI Survey of Compact Radio Sources.I. Shen, Z. -Q. ; Wan, T. -S. ; Moran, J. M. ; Jauncey, D. L. ; Reynolds, J. E. ; Tzioumis, A. K. ; Gough, R. G. ; Ferris, R. H. ; Sinclair, M. W. ; Jiang, D. -R. ; Hong, X. -Y. ; Liang, S. -G. ; Costa, M. E. ; Tingay, S. J. ; McCulloch, P. M. ; Lovell, J. E. J. ; King, E. A. ; Nicolson, G. D. ; Murphy, D. W. ; Meier, D. L. ; van Ommen, R. D. ; Edwards, P. G. ; White, G. L. Abstract We report the results of a 5-GHz southern hemisphere VLBI survey of compact extragalactic radio sources. These observations were undertaken with the SHEVE array plus Shanghai station in 1992 November. A sample of 22 sources was observed and images of 20 of them were obtained. Of the 20 sources imaged, 15 showed core-jet structure, 1 had a two-sided jet, and 4 had only single compact cores. Eleven of the 16 core-jet (including one two-sided jet) sources showed some evidence of bent jets. No compact doubles were found. A comparison with previous images and the temporal variability of the radio flux density showed evidence for superluminal motion in four of the sources. Five sources were high-energy (>100 MeV) γ-ray sources. Statistical analysis showed the dominance of highly polarized quasars among the detected γ-ray sources, which emphasizes the importance of beaming effect in the γ-ray emission. Publication: The Astronomical Journal Pub Date: November 1997 DOI: 10.1086/118621 arXiv: arXiv:astro-ph/9709128 Bibcode: 1997AJ....114.1999S Keywords: RADIO LINES: GALAXIES; SURVEYS; QUASARS: GENERAL; Astrophysics E-Print: 39 pages including 7 ps figures and 5 tables, Latex, to appear in AJ full text sources arXiv | ADS | data products SIMBAD (23) NED (22) Related Materials (1) Part 2: 1998AJ....115.1357S