Discovery of an X-ray Jet and Extended Jet Structure in the Quasar PKS   1055+201
  This letter reports rich X-ray jet structures found in the Chandra observation of PKS 1055+201. In addition to an X-ray jet coincident with the radio jet we detect a region of extended X-ray emission surrounding the jet as far from the core as the radio hotspot to the North, and a similar extended X-ray region along the presumed path of the unseen counterjet to the Southern radio lobe. Both X-ray regions show a similar curvature to the west, relative to the quasar. We interpret this as the first example where we separately detect the X-ray emission from a narrow jet and extended, residual jet plasma over the entire length of a powerful FRII jet. 
D. A. Schwartz (1), H. L. Marshall (2), J. E. J. Lovell (3), D. W.   Murphy (4), G. V. Bicknell (5), M. Birkinshaw (1 and 6)...