A Caltech Library Service

Multi-Epoch Observations of Survey Sources

Readhead, A. C. S. and Pearson, T. J. and Unwin, S. C. (1984) Multi-Epoch Observations of Survey Sources. In: VLBI and Compact Radio Sources. IAU Symposium Proceedings Series. No.110. D. Reidel , Dordrecht, pp. 131-134. ISBN 9789027717399.

[img] PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


Five objects mapped as part of a VLBI survey have been re-observed at 5 GHz, and four of them have also been observed at 10 GHz. Three of the objects show no substantial structural variations: an upper limit of 2c can be placed on the apparent relative velocities of the components. One object (0711+356) shows structural variations which are mostly simply described in terms of a superluminal contraction. The remaining object (3C371, 1807+698) shows substantial structural variations which suggest that it probably is a superluminal source. The source 0710+439 is especially interesting as it consists of a central flat-spectrum core component straddled by two compact steep-spectrum components.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Readhead, A. C. S.0000-0001-9152-961X
Pearson, T. J.0000-0001-5213-6231
Additional Information:© 1984 by the IAU.
Series Name:IAU Symposium Proceedings Series
Issue or Number:110
Record Number:CaltechAUTHORS:20181211-132351412
Persistent URL:
Official Citation:Readhead, A., Pearson, T., & Unwin, S. (1984). Multi-Epoch Observations of Survey Sources. Symposium - International Astronomical Union, 110, 131-134. doi:10.1017/S007418090007786X
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91688
Deposited By: Tony Diaz
Deposited On:11 Dec 2018 22:38
Last Modified:16 Nov 2021 03:43

Repository Staff Only: item control page