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Subparsec-scale structure and evolution of Centaurus A (NGC5128)


Jauncey, DL and Tingay, SJ and Preston, RA and Reynolds, JE and Lovell, JEJ and McCulloch, PM and Tzioumis, AK and Costa, ME and Murphy, DW and Meier, DL and Jones, DL and Amy, SW and Biggs, JD and Blair, DG and Clay, RW and Edwards, PG and Ellingsen, SP and Ferris, RH and Gough, RG and Harbison, P and Jones, PA and King, EA and Kemball, AJ and Migenes, V and Nicolson, GD and Sinclair, MW and van Ommen, T and Wark, RM and White, GL, Subparsec-scale structure and evolution of Centaurus A (NGC5128), Proceedings of the National Academy of Sciences of the United States of America, 92, (25) pp. 11368-11370. ISSN 0027-8424 (1995) [Refereed Article]

DOI: doi:10.1073/pnas.92.25.11368


We present a series of 8.4-GHz very-long-baseline radio interferometry images of the nucleus of Centaurus A (NGC5128) made with a Southern Hemisphere array, representing a 3.3-year monitoring effort. The nuclear radio jet is ≃50 milliarcseconds in extent, or at the 3.5-megaparsec distance of NGC5128, ≃1 parsec in length. Subluminal motion is seen and structural changes are observed on time scales shorter than 4 months. High- resolution observations at 4.8 and 8.4 GHz made in November 1992 reveal a complex morphology and allow us to unambiguously identify the self-absorbed core located at the southwestern end of the jet.

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:Lovell, JEJ (Dr Jim Lovell)
UTAS Author:McCulloch, PM (Professor Peter McCulloch)
UTAS Author:Ellingsen, SP (Professor Simon Ellingsen)
UTAS Author:King, EA (Dr King)
ID Code:47673
Year Published:1995
Web of Science® Times Cited:5
Deposited By:Physics
Deposited On:2007-08-01
Last Modified:2007-09-19

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