Extended and compact X-ray emission in powerful radio galaxies

Creators: Worrall, D. M.; Lawrence, C. R.; Pearson, T. J.; Readhead, A. C. S.

Abstract

We report ROSAT X-ray observations of two powerful radio galaxies. 3C 280 provides evidence for a mixture of unresolved and extended emission, with the latter produced by hot plasma of insufficient pressure to confine the radio lobes and insufficient density for a cooling flow to have begun. 3C 220.3 gives only an X-ray upper limit, but one consistent with our interpretation of the X-ray emission from powerful radio-loud active galactic nuclei (AGNs) in terms of obscured and unobscured components.

Additional Information

© 1993 American Astronomical Society. Provided by the NASA Astrophysics Data System. Received 1993 April 13; accepted 1993 October 13. We thank M. Birkinshaw for discussions and code used in the radial-profile fitting, and D. Harris, A. Marscher, and an anonymous referee for comments which helped to improve this manuscript. D. M. W. thanks the Caltech Astronomy Department for hospitality while this paper was being written. The work was funded by NASA grants NAG5-1706 and NAG5-1882, NASA contract NAS8-39073, and NSF grant AST 9117100.

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