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The VLBA Calibrator Survey

Published online by Cambridge University Press:  25 May 2016

A.J. Beasley ,
V. Dhawan ,
E.B. Fomalont ,
R.C. Walker  and
J.M. Wrobel
A.J. Beasley
Affiliation:
NRAO, Socorro, New Mexico 87801-0387, USA
V. Dhawan
Affiliation:
NRAO, Socorro, New Mexico 87801-0387, USA
E.B. Fomalont
Affiliation:
NRAO, Socorro, New Mexico 87801-0387, USA
R.C. Walker
Affiliation:
NRAO, Socorro, New Mexico 87801-0387, USA
J.M. Wrobel
Affiliation:
NRAO, Socorro, New Mexico 87801-0387, USA

Extract

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Using phase-referencing, the coherent integration time of VLBI observations can be substantially increased, permitting observations of weaker (≃mJy) target sources (see e.g. Beasley & Conway 1995). The position of a source can also be accurately measured relative to a reference source, allowing absolute and proper-motion measurements, optical-radio image alignment, and alignment of images made at different frequencies.

Type
Surveys of Radio Sources
Information
Symposium - International Astronomical Union , Volume 175: Extragalactic Radio Sources , 1996 , pp. 527 - 528
Copyright
Copyright © Kluwer 1996 

References

Beasley, A.J. & Conway, J.E. 1995, in VLBI Phase-Referencing, Chapter 7, Proceedings of the NRAO VLBA Summer School , ASP Conference Series Vol. 82, eds. Zensus, A., Diamond, P.J. and Napier, P.J. Google Scholar
Patnaik, A.R. et al. 1992, MNRAS , 254, 655.CrossRefGoogle Scholar