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The MicroArcsecond Scintillation-Induced Variability (MASIV) Survey: Detection of Angular Broadening at High Redshift?

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Authors
Pursimo, T.
Ojha, R.
Jauncey, J.
Lovell, J.
Dutka, M.
Bignall, Hayley
Macquart, Jean-Pierre
rickett, B.
Kedziora-Chudczer, L.
Date
2008
Type
Conference Paper

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Citation
Pursimo, T. and Ojha, R. and Jauncey, J. and Lovell, J. and Dutka, M. and Bignall, H. and Macquart, J. et al. 2008. The MicroArcsecond Scintillation-Induced Variability (MASIV) Survey: Detection of Angular Broadening at High Redshift?, in Travis A. Rector and David S. De Young (ed), The Astronomical Society of the Pacific Conference, May 21 2008. Girdwood Alaska USA: Astronomical Society of the Pacific.
Source Title
The Astronomical Society of the Pacific conference Series
Source Conference
The Astronomical Society of the Pacific Conference
School
Department of Physics and Astronomy
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Abstract

Interstellar scintillation has been shown to be primarily responsible for intra-day variability exhibited by extragalactic sources at centimeter wavelengths. The recent MASIV survey has shown that a very high proportion of flat spectrum extragalactic radio sources scintillate; such behaviour is both too common and too important to ignore. A study of the physical properties of the MASIV objects is severely handicapped by the absence of reliable redshift measurements for most of the objects. We present the first results of the studies of the physical properties of the MASIV sources, based on archival and our own redshift measurements.