Compactness of Weak Radio Sources at High Frequencies

W. A. Majid; E. B. Fomalont; D. S. Bagri

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arXiv · 0806.3061

Compactness of Weak Radio Sources at High Frequencies

W. A. Majid·E. B. Fomalont·D. S. Bagri

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Abstract

We have obtained 8.4 GHz VLBA observations of a 31-GHz complete sample of ~100 sources between 10 and 100 mJy. The main goals of these observations are: to determine the angular size, radio spectra and identification for a weak sample of high frequency sources; to find the fraction of sources which have sufficiently compact emission for use as calibrators for VLBI observations; and for design considerations of the proposed DSN Array. We find that a large fraction of observed sources have VLBI detections. A majority of these sources have most of their emission in a compact <1 mas radio core, with remaining sources having steep radio spectra. The source list was provided from GBT observations to remove discrete sources in the CBI fields.

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W. A. Majid, E. B. Fomalont, D. S. Bagri. 2008-06-18. Compactness of Weak Radio Sources at High Frequencies. https://arxiv.org/abs/0806.3061

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