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A 5 GHz Southern Hemisphere VLBI Survey of Compact Radio Sources. II

journal contribution
posted on 2023-05-16, 11:06 authored by Shen, ZQ, Wan, TS, Moran, JM, Jauncey, DL, Reynolds, JE, Tzioumis, AK, Gough, RG, Ferris, RH, Sinclair, MW, Jiang, DR, Hong, XY, Liang, SG, Edwards, PG, Costa, ME, Tingay, SJ, Peter McCullochPeter McCulloch, James LovellJames Lovell, King, EA, Nicolson, GD, Murphy, DW, Meier, DL, van Ommen, TD, White, GL
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) γ-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.

History

Publication title

The Astronomical Journal

Volume

115

Issue

4

Pagination

1357-1370

ISSN

0004-6256

Department/School

School of Natural Sciences

Publisher

American Astronomical Society

Place of publication

Woodbury, NY, USA

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the physical sciences

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