Mathematics – Logic
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.9607w&link_type=abstract
American Astronomical Society, AAS Meeting #211, #96.07; Bulletin of the American Astronomical Society, Vol. 39, p.901
Mathematics
Logic
Scientific paper
Previous studies have shown that double-lobed radio sources exhibiting some degree of bending are likely to be found in galaxy clusters. Often this radio emission is associated with a cD or bright elliptical galaxy at the center of a cluster. We have cross-correlated the Sloan Digital Sky Survey (SDSS) with samples selected from the VLA Faint Images of the Radio Sky at Twenty Centimeters (FIRST) catalog and measured the richness of the cluster environments surrounding extended sources exhibiting both bent and straight lobes. This has lead to the discovery and classification of a large number of galaxy clusters out to a redshift of z 0.6-0.8. It is believed that double-lobed radio sources are bent as a result of the ram pressure arising from the relative motion between the radio source host galaxy and the X-ray-emitting intracluster medium in clusters of galaxies. We find that bent-lobed radio sources are located in rich clusters more frequently than straight-lobed radio sources and compact radio sources are less often associated with galaxy clusters than either straight or bent double-lobed radio sources. Many of the radio sources in our sample that do not have optical counterparts in the SDSS are candidates for even higher-redshift clusters. Studying galaxy clusters at high redshift furthers our understanding of galaxy evolution and helps to constrain cosmological parameters.
Blanton Elizabeth
Wing Joshua
No associations
LandOfFree
Distant Clusters Associated with Radio Sources does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Distant Clusters Associated with Radio Sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Distant Clusters Associated with Radio Sources will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1480206