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Continuum VLBI Polarimetry of 3C454.3 at 43 GHz

Published online by Cambridge University Press:  25 May 2016

A. J. Kemball  and
P. J. Diamond
A. J. Kemball
Affiliation:
National Radio Astronomy Observatory Socorro, NM 87801, USA
P. J. Diamond
Affiliation:
National Radio Astronomy Observatory Socorro, NM 87801, USA

Extract

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Polarization VLBI calibration at high frequencies has traditionally been difficult due to poor sensitivity and high antenna instrumental polarization across inhomogeneous networks. The higher observing frequency and increased spatial resolution diminishes the chances of finding ideal VLBI polarization calibrators. The advent of the Very Long Baseline Array (VLBA), which has standardized feeds with low instrumental polarization, has minimized these observational difficulties. Recent work in polarization calibration has suggested that somewhat resolved sources may be used in an iterative polarization calibration scheme (Cotton 1993). A full generalization of this method has been developed by Leppanen, Zensus and Diamond (1995) in calibrating 22 GHz polarization observations with the VLBA.

Type
Properties of Radio Sources
Information
Symposium - International Astronomical Union , Volume 175: Extragalactic Radio Sources , 1996 , pp. 33 - 34
Copyright
Copyright © Kluwer 1996 

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