Neutral hydrogen absorption at milliarcsecond resolutions: The radio   galaxy 3C293
  We present new milliarcsecond resolution observations of the H1 absorption against the kiloparsec scale inner jet of the radio galaxy 3C293. Using a combination of observations obtained with global VLBI, MERLIN and the VLA we have imaged the strong and extensive neutral hydrogen absorption against the radio core and jet of this source across a wide range of angular scales.   In this proceedings we will present these new combined milliarcsecond scale VLBI results alongside our previous lower resolution MERLIN studies of the H1 absorption in this source. This study will allow us to investigate the distribution and dynamics of the H1 absorption in the centre of this source from scales of arcseconds to a few milliarcsecond. 
R. J. Beswick (Jodrell bank Observatory), A. B. Peck (SMA), G. B.   Taylor (NRAO), G. Giovannini (CNR), A. Pedlar (JBO)