Computer Science
Scientific paper
Aug 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011scgg.conf...51t&link_type=abstract
"Structure in Clusters and Groups of Galaxies in the Chandra Era, 2011 Chandra Science Workshop held July 12-14, 2011. Edited by
Computer Science
Scientific paper
The Suzaku observations of Abell 2256 are presented. This is a prototypical and well-studied merging system, exhibiting substructures both in the gas and galaxies. In order to measure Doppler shifts of iron K-shell lines from gas components by the Suzaku XIS, the energy scale of the instrument was evaluated carefully. A significant shift of the radial velocity of the sub component gas was detected. The difference is found to be 1500 ± 300 (statistical) ± 300 (systematic) km/s. The X-ray determined absolute redshifts of the main and sub components are consistent with those of member galaxies in optical. The observation indicates robustly that the X-ray emitting gas is moving together with galaxies as a substructure within the cluster (Tamura et al. 2011 PASJ in press).
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