Clumped X-ray emission around radio galaxies in Abell clusters

Abstract

view Abstract Citations (88) References (92) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Clumped X-Ray Emission around Radio Galaxies in Abell Clusters Burns, Jack O. ; Rhee, George ; Owen, Frazer N. ; Pinkney, Jason Abstract We have made a comparison of the X-ray and radio morphologies for a sample of 41 rich cluster fields using Einstein Observatory IPC and VLA 20 cm images. Surprisingly, we find that 75% of the radio galaxies have a statistically significant X-ray peak or subclump within 5' of the radio galaxy position. The X-ray luminosity and the generally extended nature of the X-ray subclumps suggest that these subclumps are overdense regions emitting free-free radiation, although there is also evidence for AGN X- ray emission coming from some of the more compact, high surface brightness X-ray peaks. Some interesting correlations with radio morphology were also discovered. For clusters which contain wide- angle-tailed radio sources associated with centrally dominant galaxies, there are significant elongations or clumps in the central X-ray emission which are unusual for this type of cluster. We suggest that cluster radio galaxies are pointers to particular clusters or regions within clusters that have recently undergone mergers between cluster subsystems. Publication: The Astrophysical Journal Pub Date: March 1994 DOI: 10.1086/173792 Bibcode: 1994ApJ...423...94B Keywords: Emission Spectra; Galactic Clusters; Radio Galaxies; Stellar Luminosity; X Ray Stars; Active Galactic Nuclei; Brightness Distribution; Heao 2; Monte Carlo Method; Proportional Counters; Very Large Array (Vla); Astrophysics; GALAXIES: CLUSTERING; GALAXIES: INTERACTIONS; RADIO CONTINUUM: GALAXIES; X-RAYS: GALAXIES full text sources ADS | data products NED (92) SIMBAD (44)