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New Results from an ATCA Study of Intraday Variable Radio Sources

Published online by Cambridge University Press:  05 March 2013

H. E. Bignall ,
D. L. Jauncey ,
L. L. Kedziora-Chudczer ,
J. E. J. Lovell ,
J.-P. Macquart ,
D. P. Rayner ,
S. J. Tingay ,
A. K. Tzioumis ,
R. W. Clay  and
R. G. Dodson
...Show all authors
H. E. Bignall*
Affiliation:
Department of Physics, University of Adelaide, SA 5005, Australia Australia Telescope National Facility, CSIRO, Epping, NSW, Australia
D. L. Jauncey
Affiliation:
Australia Telescope National Facility, CSIRO, Epping, NSW, Australia
L. L. Kedziora-Chudczer
Affiliation:
Australia Telescope National Facility, CSIRO, Epping, NSW, Australia Anglo-Australian Observatory, Epping, NSW, Australia
J. E. J. Lovell
Affiliation:
Australia Telescope National Facility, CSIRO, Epping, NSW, Australia
J.-P. Macquart
Affiliation:
Research Centre for Theoretical Astrophysics, School of Physics, University of Sydney, NSW 2006, Australia now at Kapteyn Institute, University of Groningen, The Netherlands
D. P. Rayner
Affiliation:
Australia Telescope National Facility, CSIRO, Epping, NSW, Australia
S. J. Tingay
Affiliation:
Australia Telescope National Facility, CSIRO, Epping, NSW, Australia
A. K. Tzioumis
Affiliation:
Australia Telescope National Facility, CSIRO, Epping, NSW, Australia
R. W. Clay
Affiliation:
Department of Physics, University of Adelaide, SA 5005, Australia
R. G. Dodson
Affiliation:
School of Maths and Physics, University of Tasmania, Hobart, Tasmania 7001, Australia
P. M. McCulloch
Affiliation:
School of Maths and Physics, University of Tasmania, Hobart, Tasmania 7001, Australia
G. D. Nicolson
Affiliation:
Hartebeesthoek Radio Astronomy Observatory, Krugersdorp 1740, Transval, South Africa
*
[email protected]
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Abstract

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We are undertaking an observational program using the ATCA to monitor the intraday variability (IDV) of a sample of sources at 4.8 and 8.6 GHz. The sources were selected to include the known strong southern IDV sources plus a number of sources whose IDV was recently discovered. The present monitoring program will extend over a full year in order to search for any annual cycle that may be present in the long-term IDV characteristics of these sources. In this paper we discuss the observing strategy and data analysis, and present the first results from our observations.

Keywords

radio continuum: galaxiesquasars: individual (PKS 1257−326, PMN J1326−5256, PMN J1047−6217)ISM: generalpolarisation
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 19 , Issue 1 , 2002 , pp. 29 - 33
Copyright
Copyright © Astronomical Society of Australia 2002

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