Microquasar Observations with MERLIN
  A series of observations of microquasar GRS1915+105 were made by the MERLIN telescope array in the spring of 2003 at 18 cm. The images show polarization in the jet components, with two epochs displaying Faraday rotation of about 2500 rad/m2. This effect is a demonstration of the similarities between microquasars and extragalactic jets. 
I.K. Brown (Jodrell Bank Observatory, University of Manchester, UK)