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Limitations of ad hoc "SKA+VLBI" configurations & the need to extend SKA to trans-continental dimensions
M. A. Garrett
The angular resolution of the proposed Square Kilometre Array, SKA, must be extended towards the milliarcsecond scale if it is to resolve the distant starburst galaxies that are li…
Helical motions in the jet of blazar 1156+295
X. Y. Hong, D. R. Jiang, L. I. Gurvits +3
The blazar 1156+295 was observed by VLBA and EVN + MERLIN at 5 GHz in June 1996 and February 1997 respectively. The results show that the jet of the source has structural oscillati…
A VLBI and MERLIN Survey of faint, compact radio sources
S. T. Garrington, M. A. Garrett, A. Polatidis
We present preliminary results from a VLBI survey at cm of a sample of 35 sources with flux densities of 2 - 100 mJy. These sources were selected from the VLA FIRST survey at…
Wide-field VLBI Imaging
M. A. Garrett, R. W. Porcas, A. Pedlar +2
We discuss the technique of Wide-field imaging as it applies to Very Long Baseline Interferometry (VLBI). In the past VLBI data sets were usually averaged so severely that the fiel…
Changes in the angular separation of the lensed images PKS 1830-211 NE & SW
Jin Chengjin, M. A. Garrett, S Nair +2
We present 8 epochs of 7 mm dual-polarization VLBA observations of the gravitational lens system PKS 1830-211 made over the course of 14 weeks. Clear changes in the relative positi…
Milliarcsec-scale polarisation observations of the gravitational lens B1422+231
A. R. Patnaik, A. J. Kemball, R. W. Porcas +1
We present polarisation observations of the gravitational lens system B1422+231 made at 8.4 GHz using the VLBA and the 100m telescope at Effelsberg. All four images of the quasar s…