ROSAT HRI observations of radio-loud AGN

Details ROSAT HRI observations of radio-loud AGN ROSAT HRI observations of radio-loud AGN

1999-11-04

arxiv.org/abs/astro-ph/9911055v1

Astronomy and Astrophysics

Astrophysics

7 pages, 7 figures; accepted for pubblication in A&A

Scientific paper

We present the results of three ROSAT HRI observations of AGN expected to reside in clusters of galaxies. Although the exposures were truncated by the premature end of the ROSAT mission, valuable information could be achieved which greatly improved upon the previous PSPC results. For RGB 1745+398 we could separate the cluster emission from that of the BL Lac and could confirm the cluster parameters obtained from optical follow-up observations. In MRC 0625-536 the flux from the central point source contributes less than 3% to the total X-ray flux and the eastern component of the dumbbell galaxy seems to be the X-ray emitter. RXJ1234.6+2350 appears to be extended in X-rays. The X-ray flux is centered on a quasar, but optical spectroscopy indicates that the nearby radio galaxies reside in a previously unknown cluster at redshift z=0.134.

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