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A 5 GHz Southern Hemisphere VLBI Survey of Compact Radio SOurces - I | | Z.-Q. Shen
; T.-S. Wan
; J. M. Moran
; D. L. Jauncey
; J. E. Reynolds
; A. K. Tzioumis
; R. G. Gough
; R. H. Ferris
; M. W. Sinclair
; D.-R. Jiang
; X.-Y. Hong
; S.-G. Liang
; M. E. Costa
; S. J. Tingay
; P. M. McCulloch
; J. E. J. Lovell
; E. A. King
; G. D. Nicolson
; D. W. Murphy
; D. L. Meier
; T. D. van Ommen
; P. G. Edwards
; | | Date: |
14 Sep 1997 | | Subject: | astro-ph | | Affiliation: | 1,2), T.-S. Wan , J. M. Moran , D. L. Jauncey , J. E. Reynolds , A. K. Tzioumis , R. G. Gough , R. H. Ferris , M. W. Sinclair , D.-R. Jiang , X.-Y. Hong , S.-G. Liang , M. E. Costa , S. J. Tingay , P. M. McCulloch , J. E. J. Lovell , E. A. King , G. D | | 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 November 1992. 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, one had a two-sided jet and 4 had only single compact cores. Eleven of the 16 core-jet (including one two-sided jet) sources show 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 4 of the sources. Five sources were high energy (>100 MeV) gamma-ray sources. Statistical analysis showed the dominance of highly polarized quasars among the detected gamma-ray sources, which emphasizes the importance of beaming effect in the gamma-ray emission. | | Source: | arXiv, astro-ph/9709128 | | Services: | Forum | Review | PDF | Favorites | |
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