Abstract
Machalski and Engels (1994) have drawn attention to the recent outburst in the extragalactic radio source 1308+328. We observed it with VLBI at 2.3 and 8.4 GHz in February 1995, using the EVN, and including antennas at Seshan, Kashima, Hartebeesthoek and Ny-Alesund, all of which provided long baselines. During these observations we switched every few minutes between 1308+328 and the nearby compact source 1308+326, 14 arcmin away. This allowed us to determine a precise relative separation between these sources at both frequencies using phase referencing techniques, and provided a useful comparison between source sizes. We found that the target source, 1308+328, is considerably more compact than the reference source 1308+326, the latter being resolved (correlated flux decreased by 50 %) at 8.4 GHz at 250 million wavelengths. In contrast, 1308+328 appears completely unresolved at this resolution (Fig 1), corresponding to a source size < 0.5 mas.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Machalski, J. and Engels, D., 1994, MNRAS 266, L69
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1996 International Astronomical Union
About this paper
Cite this paper
Rioja, M.J., Porcas, R.W., Machalski, J. (1996). EVN Phase-Referenced Observations of 1308+328. In: Ekers, R., Fanti, C., Padrielli, L. (eds) Extragalactic Radio Sources. International Astronomical Union, vol 175. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0295-4_49
Download citation
DOI: https://doi.org/10.1007/978-94-009-0295-4_49
Publisher Name: Springer, Dordrecht
Print ISBN: 978-0-7923-4122-2
Online ISBN: 978-94-009-0295-4
eBook Packages: Springer Book Archive