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High resolution VLBI observations of the nuclei of bright galaxies and quasars at 327 MHz

Published online by Cambridge University Press:  19 July 2016

S. Ananthakrishnan
Affiliation:
Radio Astronomy Centre(TIFR), P.O. Box 8, Uthagamandalam 643001, India
V.K. Kulkarni
Affiliation:
Radio Astronomy Centre(TIFR), P.O. Box 8, Uthagamandalam 643001, India

Extract

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An intercontinental VLBI experiment at 327 MHz involving the Ooty Radio Telescope and telescopes at Jodrell Bank, Westerbork, Torun and Crimea was carried out during December 8–12, 1983. The purpose of the experiment was to (i) establish the feasibility of performing MKII VLBI observations from India and (ii) to study the low frequency structure of nearby galaxies, quasars and some other well known radio sources at metre wavelengths. The sources observed were NGC 262, 315, 1052, 1068, 1265, 1275, 4151, 4486, 7674 and 3C 120; PKS 1055+018, 1148−001 and CTA 102; 3C 237 and SS 433. The bright NGC galaxies chosen were selected from an Interplanetary Scintillation survey of 150 nearby galaxies (Bagri and Ananthakrishnan 1983); they were found to have a flux density greater than about 0.2 Jy in subarcsec components at 327 MHz and have high frequency VLBI observations. The quasars chosen are amongst the most compact sources known at metrewavelengths. The other objects were the well known sources which have been studied extensively at higher frequencies.

Type
II. Continuum Emission
Copyright
Copyright © Reidel 1986 

References

Bagri, D.S. and Ananthakrishnan, S., Proc. of IAU Symp.110 on ‘VLBI and Compact Radio Sources’, 261p.Google Scholar