A ROSAT Search for X-Ray Emission from Quasar Host Clusters
Abstract
We report the results of a search for x-ray emission from quasar host clusters at moderate redshift using the ROSAT HRI. We detect no emission from the host clusters of 3C 263 (z = 0.646) and PKS 2352-34 (z = O.706) to 3σ limits of 3.26 and 2.86 x 10^44^ erg s^-1^, respectively (H_0_ = 50, q_0_ = 1/2) for clusters with r_core_ = 125 kpc and T = 5 keV. These limits show that these quasar host clusters are not substantially more x-ray luminous than optically or x-ray selected clusters of similar richnesses at z ~> 0.5. We also report the possible detection of a clump of x-ray emitting gas coincident with the brightest radio lobe of 3C 263. This may be evidence for the existence of a clumpy ICM in the host cluster of 3C 263.
- Publication:
-
The Astronomical Journal
- Pub Date:
- August 1995
- DOI:
- 10.1086/117538
- arXiv:
- arXiv:astro-ph/9506029
- Bibcode:
- 1995AJ....110..513H
- Keywords:
-
- X-RAYS: GALAXIES;
- QUASARS: GENERAL;
- Astrophysics
- E-Print:
- Scheduled for the August 1995 Astronomical Journal