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H.L. Marshall (MIT CSR), D.A. Schwartz (SAO), J.E.J. Lovell (CSIRO ATNF), D.W. Murphy (JPL), D.M. Worrall, M. Birkinshaw (SAO), J.M. Gelbord (MIT CSR), E.S. Perlman (UMBC), D.L. Jauncey (CSIRO ATNF), R.A. Preston (JPL)
We present results from {\em Chandra} X-ray imaging and spectroscopy of a flux-limited sample of flat spectrum radio-emitting quasars with jet-like extended structure. Twelve of twenty quasar jets are detected in 5 ks ACIS-S exposures from our initial survey and two of five show jets in the survey continuation (so far). The quasars without X-ray jets are not significantly different from those with detected jets except that the extended radio emission is generally somewhat fainter. New radio maps are combined with the X-ray images in order to elucidate the relation between radio and X-ray emission in spatially resolved structures. We find a variety of morphologies. The FR II X-ray jets can all be interpreted as inverse Compton scattering of cosmic microwave background photons by electrons in large-scale relativistic jets.
In the jet of PKS 1421-490, we have found a unique optically-dominated knot that is ~200-300 times brighter than the core in the optical band and 3.5 times brighter in X-rays. Its optical spectrum is featureless, ruling out most possible sources of contamination; a deeper upcoming observation will both improve the S/N of the jet spectrum and allow us to measure the redshift of the core. (From photometric colors, z>2.5.)
This work has been supported in part under SAO contracts GO4-5124 and SV1-61010.
If you would like more information about this abstract, please follow the link to http://space.mit.edu/home/jonathan/jets/. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.
The author(s) of this abstract have provided an email address for comments about the abstract: hermanm@space.mit.edu
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Bulletin of the American Astronomical Society, 36 #2
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