Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aas...18711102b&link_type=abstract
American Astronomical Society, 187th AAS Meeting, #111.02; Bulletin of the American Astronomical Society, Vol. 27, p.1444
Astronomy and Astrophysics
Astronomy
1
Scientific paper
We will present preliminary results of a study of the X-ray emission coincident with radio galaxies in fourteen Abell clusters. Recently, Edge and Rottgering (1995) studied X-ray emission in the vicinities of head-tail radio galaxies, and found that the X-ray emission exists near radio galaxies, but this emission is unresolved. This led them to conclude that the emission is probably due to galaxy nuclear emission, and not thermal emission from the cluster gas. Our analysis of the ROSAT PSPC hard-band X-ray data for these clusters shows significant substructure in the clusters as a whole, as well as resolved emission around several of the radio galaxies. Since the X-ray emission is resolved, it is most likely thermal emission from the cluster gas, in a potential well centered on the radio source. Our results will include: significance of X-ray detections around tailed radio sources, sizes and luminosities of the X-ray sources, examination of galaxy velocities around the extended emission to look for high velocity dispersions, and inspection of the radio and optical counterparts for sub-cluster candidates. We will also discuss possible origins for the exteded X-ray emission around the radio galaxies. This research was funded by NSF grant AST93-17596 and NASA grant NAGW-3152.
Bliton Mark
Burns O. Jr. J.
Pinkney Jason
Rizza Elizabeth
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