Other
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.7719d&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #77.19; Bulletin of the American Astronomical Society, V
Other
Scientific paper
Wide-angle tail (WAT) radio sources are typically associated with dominant central galaxies in clusters. Various models have been proposed to explain the bending of these sources, including cluster-cluster mergers. We present a recent observation with the Chandra X-ray Observatory which suggests that the galaxy cluster Abell 1446 (z = 0.1035), host to the WAT 1159+583, may be the site of an on-going merger with a sub-cluster. The presence of temperature and pressure substructure along the line that bisects the WAT as well as what may be a wake of stripped interstellar material to the southeast of the host galaxy support the merger scenario. A filament to the north may represent cool, infalling gas that further contributes to the WAT bending. The X-ray emission is approximately circularly symmetric about the core with an isothermal (kT = 4.0 keV) radial temperature profile out to a distance of 400 kpc from the center. Additionally, we investigate the model of fast and light radio tails where slow galactic motion through the ICM is revisited as a WAT bending mechanism.
Blanton Elizabeth
Clarke Tracy
Douglass Edmund
Sarazin Craig
Wise Mark
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