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Discovery of an X-Ray Jet and Extended Jet Structure in the Quasar PKS 1055+201

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Published 2006 August 7 • © 2006. The American Astronomical Society. All rights reserved. Printed in U.S.A.
, , Citation D. A. Schwartz et al 2006 ApJ 647 L107 DOI 10.1086/507529

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Author affiliations

1 Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138

2 Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139

3 CSIRO Australia Telescope National Facility, P.O. Box 76, Epping, NSW 1710, Australia

4 Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109

5 Research School of Astronomy and Astrophysics, Australian National University, Cotter Road, Weston Creek, Canberra, ACT 72611, Australia

6 Department of Physics, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, UK

7 Department of Physics, Joint Center for Astrophysics, University of Maryland-Baltimore County, 1000 Hilltop Circle, Baltimore, MD 21250

8 NASA's Goddard Space Flight Center, Mail Code 660, Greenbelt, MD 20771

9 School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, UK

Dates

  1. Received 2006 June 23
  2. Accepted 2006 July 10
  3. Published
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1538-4357/647/2/L107

Abstract

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 hot spot 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 in which we separately detect the X-ray emission from a narrow jet and extended, residual jet plasma over the entire length of a powerful FR II jet.

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10.1086/507529