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A 5-GHz southern hemisphere VLBI survey of compact radio sources .1


Shen, ZQ and Wan, TS and Moran, JM and Jauncey, DL and Reynolds, JE and Tzioumis, AK and Gough, RG and Ferris, RH and Sinclair, MW and Jiang, DR and Hong, XY and Liang, SG and Costa, ME and Tingay, SJ and McCulloch, PM and Lovell, JEJ and King, EA and Nicolson, GD and Murphy, DW and Meier, DL and van Ommen, TD and Edwards, PG and White, GL, A 5-GHz southern hemisphere VLBI survey of compact radio sources .1, The Astronomical Journal, 114, (5) pp. 1999-2015. ISSN 0004-6256 (1997) [Refereed Article]

DOI: doi:10.1086/118621


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. © 1997 American Astronomical Society.

Item Details

Item Type:Refereed Article
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:Galactic astronomy
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:McCulloch, PM (Professor Peter McCulloch)
UTAS Author:Lovell, JEJ (Dr Jim Lovell)
UTAS Author:King, EA (Dr King)
ID Code:12454
Year Published:1997
Web of Science® Times Cited:47
Deposited By:Physics
Deposited On:1997-08-01
Last Modified:2011-08-15

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